Commit 14c5473

Browse files
jasnelladuh95
jasnell
authored and
aduh95
committed
test: add tests for experimental stream/iter implementation
Signed-off-by: James M Snell <jasnell@gmail.com> Assisted-By: Claude/Opus 4.6 PR-URL: #62066 Backport-PR-URL: #64675 Reviewed-By: Robert Nagy <ronagy@icloud.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
1 parent 28dc85d commit 14c5473

39 files changed

Lines changed: 8924 additions & 0 deletions

‎test/parallel/test-fs-promises-file-handle-pull.js‎

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‎test/parallel/test-fs-promises-file-handle-pullsync.js‎

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‎test/parallel/test-fs-promises-file-handle-writer.js‎

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‎test/parallel/test-stream-iter-broadcast-backpressure.js‎

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// Flags: --experimental-stream-iter
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'use strict';
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constcommon=require('../common');
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constassert=require('assert');
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const{ broadcast, text }=require('stream/iter');
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// =============================================================================
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// Backpressure policies
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// =============================================================================
11+
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asyncfunctiontestDropOldest(){
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const{ writer,broadcast: bc}=broadcast({
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highWaterMark: 2,
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backpressure: 'drop-oldest',
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});
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constconsumer=bc.push();
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writer.writeSync('first');
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writer.writeSync('second');
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// This should drop 'first'
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writer.writeSync('third');
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writer.endSync();
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constdata=awaittext(consumer);
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assert.strictEqual(data,'secondthird');
27+
}
28+
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asyncfunctiontestDropNewest(){
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const{ writer,broadcast: bc}=broadcast({
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highWaterMark: 1,
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backpressure: 'drop-newest',
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});
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constconsumer=bc.push();
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writer.writeSync('kept');
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// This should be silently dropped
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writer.writeSync('dropped');
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writer.endSync();
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constdata=awaittext(consumer);
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assert.strictEqual(data,'kept');
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}
44+
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// =============================================================================
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// Block backpressure
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// =============================================================================
48+
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asyncfunctiontestBlockBackpressure(){
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const{ writer,broadcast: bc}=broadcast({
51+
highWaterMark: 1,
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backpressure: 'block',
53+
});
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constconsumer=bc.push();
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writer.writeSync('a');
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// Next write should block
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letwriteResolved=false;
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constwritePromise=writer.write('b').then(()=>{writeResolved=true;});
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awaitnewPromise(setImmediate);
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assert.strictEqual(writeResolved,false);
62+
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// Drain consumer to unblock the pending write
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constiter=consumer[Symbol.asyncIterator]();
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constfirst=awaititer.next();
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assert.strictEqual(first.done,false);
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awaitnewPromise(setImmediate);
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assert.strictEqual(writeResolved,true);
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writer.endSync();
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// Drain remaining data and verify completion
72+
constsecond=awaititer.next();
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assert.strictEqual(second.done,false);
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awaitwritePromise;
75+
}
76+
77+
// Verify block backpressure data flows correctly end-to-end
78+
asyncfunctiontestBlockBackpressureContent(){
79+
const{ writer,broadcast: bc}=broadcast({
80+
highWaterMark: 1,
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backpressure: 'block',
82+
});
83+
constconsumer=bc.push();
84+
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writer.writeSync('a');
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constwritePromise=writer.write('b');
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awaitnewPromise(setImmediate);
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// Read all and verify content
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constiter=consumer[Symbol.asyncIterator]();
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constfirst=awaititer.next();
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assert.strictEqual(first.done,false);
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constfirstStr=newTextDecoder().decode(first.value[0]);
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assert.strictEqual(firstStr,'a');
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awaitwritePromise;
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writer.endSync();
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constsecond=awaititer.next();
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assert.strictEqual(second.done,false);
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constsecondStr=newTextDecoder().decode(second.value[0]);
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assert.strictEqual(secondStr,'b');
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constdone=awaititer.next();
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assert.strictEqual(done.done,true);
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}
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// Writev async path
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asyncfunctiontestWritevAsync(){
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const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
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constconsumer=bc.push();
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awaitwriter.writev(['hello',' ','world']);
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awaitwriter.end();
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constdata=awaittext(consumer);
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assert.strictEqual(data,'hello world');
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}
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// endSync returns the total byte count
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asyncfunctiontestEndSyncReturnValue(){
122+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
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bc.push();// Need a consumer to write to
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writer.writeSync('hello');// 5 bytes
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writer.writeSync(' world');// 6 bytes
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consttotal=writer.endSync();
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assert.strictEqual(total,11);
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}
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Promise.all([
132+
testDropOldest(),
133+
testDropNewest(),
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testBlockBackpressure(),
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testBlockBackpressureContent(),
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testWritevAsync(),
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testEndSyncReturnValue(),
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]).then(common.mustCall());

‎test/parallel/test-stream-iter-broadcast-basic.js‎

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// Flags: --experimental-stream-iter
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'use strict';
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4+
constcommon=require('../common');
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constassert=require('assert');
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const{ broadcast, text }=require('stream/iter');
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// =============================================================================
9+
// Basic broadcast
10+
// =============================================================================
11+
12+
asyncfunctiontestBasicBroadcast(){
13+
const{ writer,broadcast: bc}=broadcast();
14+
15+
// Create two consumers
16+
constconsumer1=bc.push();
17+
constconsumer2=bc.push();
18+
19+
assert.strictEqual(bc.consumerCount,2);
20+
21+
awaitwriter.write('hello');
22+
awaitwriter.end();
23+
24+
const[data1,data2]=awaitPromise.all([
25+
text(consumer1),
26+
text(consumer2),
27+
]);
28+
29+
assert.strictEqual(data1,'hello');
30+
assert.strictEqual(data2,'hello');
31+
}
32+
33+
asyncfunctiontestMultipleWrites(){
34+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
35+
36+
constconsumer=bc.push();
37+
38+
awaitwriter.write('a');
39+
awaitwriter.write('b');
40+
awaitwriter.write('c');
41+
awaitwriter.end();
42+
43+
constdata=awaittext(consumer);
44+
assert.strictEqual(data,'abc');
45+
}
46+
47+
asyncfunctiontestConsumerCount(){
48+
const{broadcast: bc}=broadcast();
49+
50+
assert.strictEqual(bc.consumerCount,0);
51+
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constc1=bc.push();
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assert.strictEqual(bc.consumerCount,1);
54+
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bc.push();
56+
assert.strictEqual(bc.consumerCount,2);
57+
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bc.cancel();
59+
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// After cancel, consumer count drops to 0
61+
assert.strictEqual(bc.consumerCount,0);
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// Consumers are detached and yield nothing
64+
constbatches=[];
65+
forawait(constbatchofc1){
66+
batches.push(batch);
67+
}
68+
assert.strictEqual(batches.length,0);
69+
}
70+
71+
// =============================================================================
72+
// Writer methods
73+
// =============================================================================
74+
75+
asyncfunctiontestWriteSync(){
76+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 2});
77+
constconsumer=bc.push();
78+
79+
assert.strictEqual(writer.writeSync('a'),true);
80+
assert.strictEqual(writer.writeSync('b'),true);
81+
// Buffer full (highWaterMark=2, strict policy)
82+
assert.strictEqual(writer.writeSync('c'),false);
83+
84+
writer.endSync();
85+
86+
constdata=awaittext(consumer);
87+
assert.strictEqual(data,'ab');
88+
}
89+
90+
asyncfunctiontestWritevSync(){
91+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
92+
constconsumer=bc.push();
93+
94+
assert.strictEqual(writer.writevSync(['hello',' ','world']),true);
95+
writer.endSync();
96+
97+
constdata=awaittext(consumer);
98+
assert.strictEqual(data,'hello world');
99+
}
100+
101+
asyncfunctiontestWriterEnd(){
102+
const{ writer,broadcast: bc}=broadcast();
103+
constconsumer=bc.push();
104+
105+
awaitwriter.write('data');
106+
consttotalBytes=awaitwriter.end();
107+
assert.strictEqual(totalBytes,4);// 'data' = 4 UTF-8 bytes
108+
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constdata=awaittext(consumer);
110+
assert.strictEqual(data,'data');
111+
}
112+
113+
asyncfunctiontestWriterFail(){
114+
const{ writer,broadcast: bc}=broadcast();
115+
constconsumer=bc.push();
116+
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writer.fail(newError('test error'));
118+
119+
awaitassert.rejects(
120+
async()=>{
121+
// eslint-disable-next-line no-unused-vars
122+
forawait(const_ofconsumer){
123+
assert.fail('Should not reach here');
124+
}
125+
},
126+
{message: 'test error'},
127+
);
128+
}
129+
130+
// =============================================================================
131+
// Cancel
132+
// =============================================================================
133+
134+
asyncfunctiontestCancelWithoutReason(){
135+
const{broadcast: bc}=broadcast();
136+
constconsumer=bc.push();
137+
138+
bc.cancel();
139+
140+
constbatches=[];
141+
forawait(constbatchofconsumer){
142+
batches.push(batch);
143+
}
144+
assert.strictEqual(batches.length,0);
145+
}
146+
147+
asyncfunctiontestCancelWithReason(){
148+
const{broadcast: bc}=broadcast();
149+
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// Start a consumer that is waiting for data (promise pending)
151+
constconsumer=bc.push();
152+
constresultPromise=text(consumer).catch((err)=>err);
153+
154+
// Give the consumer time to enter the waiting state
155+
awaitnewPromise((resolve)=>setImmediate(resolve));
156+
157+
bc.cancel(newError('cancelled'));
158+
159+
constresult=awaitresultPromise;
160+
assert.ok(resultinstanceofError);
161+
assert.strictEqual(result.message,'cancelled');
162+
}
163+
164+
// =============================================================================
165+
// Writer fail detaches consumers
166+
// =============================================================================
167+
168+
asyncfunctiontestFailDetachesConsumers(){
169+
const{ writer,broadcast: bc}=broadcast();
170+
constconsumer1=bc.push();
171+
constconsumer2=bc.push();
172+
173+
assert.strictEqual(bc.consumerCount,2);
174+
175+
// Write some data, then fail the writer
176+
awaitwriter.write('data');
177+
awaitwriter.fail(newError('writer failed'));
178+
179+
// After fail, consumers are detached
180+
assert.strictEqual(bc.consumerCount,0);
181+
182+
// Both consumers should see the error
183+
awaitassert.rejects(
184+
async()=>{
185+
// eslint-disable-next-line no-unused-vars
186+
forawait(const_ofconsumer1){
187+
assert.fail('Should not reach here');
188+
}
189+
},
190+
{message: 'writer failed'},
191+
);
192+
193+
awaitassert.rejects(
194+
async()=>{
195+
// eslint-disable-next-line no-unused-vars
196+
forawait(const_ofconsumer2){
197+
assert.fail('Should not reach here');
198+
}
199+
},
200+
{message: 'writer failed'},
201+
);
202+
}
203+
204+
// =============================================================================
205+
// Writer fail idempotent
206+
// =============================================================================
207+
208+
asyncfunctiontestWriterFailIdempotent(){
209+
const{ writer,broadcast: bc}=broadcast();
210+
constconsumer=bc.push();
211+
writer.writeSync('hello');
212+
writer.fail(newError('fail!'));
213+
// Second call is a no-op (already errored)
214+
writer.fail(newError('fail2'));
215+
awaitassert.rejects(async()=>{
216+
// eslint-disable-next-line no-unused-vars
217+
forawait(const_ofconsumer){/* consume */}
218+
},{message: 'fail!'});
219+
}
220+
221+
// cancel() with falsy reason (0, "", false) should still treat as error
222+
asyncfunctiontestCancelWithFalsyReason(){
223+
const{broadcast: bc}=broadcast();
224+
constconsumer=bc.push();
225+
constresultPromise=text(consumer).catch((err)=>err);
226+
awaitnewPromise((resolve)=>setImmediate(resolve));
227+
bc.cancel(0);
228+
constresult=awaitresultPromise;
229+
assert.strictEqual(result,0);
230+
}
231+
232+
// Late-joining consumer should read from oldest buffered entry
233+
asyncfunctiontestLateJoinerSeesBufferedData(){
234+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 16});
235+
236+
// Write data before any consumer joins
237+
writer.writeSync('before-join');
238+
writer.endSync();
239+
240+
// Consumer joins after data is written
241+
constconsumer=bc.push();
242+
constresult=awaittext(consumer);
243+
assert.strictEqual(result,'before-join');
244+
}
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246+
Promise.all([
247+
testBasicBroadcast(),
248+
testMultipleWrites(),
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testConsumerCount(),
250+
testWriteSync(),
251+
testWritevSync(),
252+
testWriterEnd(),
253+
testWriterFail(),
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testCancelWithoutReason(),
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testCancelWithReason(),
256+
testCancelWithFalsyReason(),
257+
testFailDetachesConsumers(),
258+
testWriterFailIdempotent(),
259+
testLateJoinerSeesBufferedData(),
260+
]).then(common.mustCall());

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Skip to content
Commit 14c5473
Browse files
jasnelladuh95
jasnell
authored and
aduh95
committed
test: add tests for experimental stream/iter implementation
Signed-off-by: James M Snell <jasnell@gmail.com>
Assisted-By: Claude/Opus 4.6
PR-URL: #62066
Backport-PR-URL: #64675
Reviewed-By: Robert Nagy <ronagy@icloud.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
1 parent 28dc85d commit 14c5473
39 files changed
Lines changed: 8924 additions & 0 deletions
‎test/parallel/test-fs-promises-file-handle-pull.js‎
Lines changed: 440 additions & 0 deletions
Large diffs are not rendered by default.
‎test/parallel/test-fs-promises-file-handle-pullsync.js‎
Lines changed: 498 additions & 0 deletions
Large diffs are not rendered by default.
‎test/parallel/test-fs-promises-file-handle-writer.js‎
Lines changed: 1126 additions & 0 deletions
Large diffs are not rendered by default.
‎test/parallel/test-stream-iter-broadcast-backpressure.js‎
Lines changed: 138 additions & 0 deletions
Original file line numberDiff line numberDiff line change
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1+
// Flags: --experimental-stream-iter
2+
'use strict';
3+
4+
constcommon=require('../common');
5+
constassert=require('assert');
6+
const{ broadcast, text }=require('stream/iter');
7+
8+
// =============================================================================
9+
// Backpressure policies
10+
// =============================================================================
11+
12+
asyncfunctiontestDropOldest(){
13+
const{ writer,broadcast: bc}=broadcast({
14+
highWaterMark: 2,
15+
backpressure: 'drop-oldest',
16+
});
17+
constconsumer=bc.push();
18+
19+
writer.writeSync('first');
20+
writer.writeSync('second');
21+
// This should drop 'first'
22+
writer.writeSync('third');
23+
writer.endSync();
24+
25+
constdata=awaittext(consumer);
26+
assert.strictEqual(data,'secondthird');
27+
}
28+
29+
asyncfunctiontestDropNewest(){
30+
const{ writer,broadcast: bc}=broadcast({
31+
highWaterMark: 1,
32+
backpressure: 'drop-newest',
33+
});
34+
constconsumer=bc.push();
35+
36+
writer.writeSync('kept');
37+
// This should be silently dropped
38+
writer.writeSync('dropped');
39+
writer.endSync();
40+
41+
constdata=awaittext(consumer);
42+
assert.strictEqual(data,'kept');
43+
}
44+
45+
// =============================================================================
46+
// Block backpressure
47+
// =============================================================================
48+
49+
asyncfunctiontestBlockBackpressure(){
50+
const{ writer,broadcast: bc}=broadcast({
51+
highWaterMark: 1,
52+
backpressure: 'block',
53+
});
54+
constconsumer=bc.push();
55+
writer.writeSync('a');
56+
57+
// Next write should block
58+
letwriteResolved=false;
59+
constwritePromise=writer.write('b').then(()=>{writeResolved=true;});
60+
awaitnewPromise(setImmediate);
61+
assert.strictEqual(writeResolved,false);
62+
63+
// Drain consumer to unblock the pending write
64+
constiter=consumer[Symbol.asyncIterator]();
65+
constfirst=awaititer.next();
66+
assert.strictEqual(first.done,false);
67+
awaitnewPromise(setImmediate);
68+
assert.strictEqual(writeResolved,true);
69+
70+
writer.endSync();
71+
// Drain remaining data and verify completion
72+
constsecond=awaititer.next();
73+
assert.strictEqual(second.done,false);
74+
awaitwritePromise;
75+
}
76+
77+
// Verify block backpressure data flows correctly end-to-end
78+
asyncfunctiontestBlockBackpressureContent(){
79+
const{ writer,broadcast: bc}=broadcast({
80+
highWaterMark: 1,
81+
backpressure: 'block',
82+
});
83+
constconsumer=bc.push();
84+
85+
writer.writeSync('a');
86+
constwritePromise=writer.write('b');
87+
awaitnewPromise(setImmediate);
88+
89+
// Read all and verify content
90+
constiter=consumer[Symbol.asyncIterator]();
91+
constfirst=awaititer.next();
92+
assert.strictEqual(first.done,false);
93+
constfirstStr=newTextDecoder().decode(first.value[0]);
94+
assert.strictEqual(firstStr,'a');
95+
96+
awaitwritePromise;
97+
writer.endSync();
98+
99+
constsecond=awaititer.next();
100+
assert.strictEqual(second.done,false);
101+
constsecondStr=newTextDecoder().decode(second.value[0]);
102+
assert.strictEqual(secondStr,'b');
103+
104+
constdone=awaititer.next();
105+
assert.strictEqual(done.done,true);
106+
}
107+
108+
// Writev async path
109+
asyncfunctiontestWritevAsync(){
110+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
111+
constconsumer=bc.push();
112+
113+
awaitwriter.writev(['hello',' ','world']);
114+
awaitwriter.end();
115+
116+
constdata=awaittext(consumer);
117+
assert.strictEqual(data,'hello world');
118+
}
119+
120+
// endSync returns the total byte count
121+
asyncfunctiontestEndSyncReturnValue(){
122+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
123+
bc.push();// Need a consumer to write to
124+
125+
writer.writeSync('hello');// 5 bytes
126+
writer.writeSync(' world');// 6 bytes
127+
consttotal=writer.endSync();
128+
assert.strictEqual(total,11);
129+
}
130+
131+
Promise.all([
132+
testDropOldest(),
133+
testDropNewest(),
134+
testBlockBackpressure(),
135+
testBlockBackpressureContent(),
136+
testWritevAsync(),
137+
testEndSyncReturnValue(),
138+
]).then(common.mustCall());
‎test/parallel/test-stream-iter-broadcast-basic.js‎
Lines changed: 260 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,260 @@
1+
// Flags: --experimental-stream-iter
2+
'use strict';
3+
4+
constcommon=require('../common');
5+
constassert=require('assert');
6+
const{ broadcast, text }=require('stream/iter');
7+
8+
// =============================================================================
9+
// Basic broadcast
10+
// =============================================================================
11+
12+
asyncfunctiontestBasicBroadcast(){
13+
const{ writer,broadcast: bc}=broadcast();
14+
15+
// Create two consumers
16+
constconsumer1=bc.push();
17+
constconsumer2=bc.push();
18+
19+
assert.strictEqual(bc.consumerCount,2);
20+
21+
awaitwriter.write('hello');
22+
awaitwriter.end();
23+
24+
const[data1,data2]=awaitPromise.all([
25+
text(consumer1),
26+
text(consumer2),
27+
]);
28+
29+
assert.strictEqual(data1,'hello');
30+
assert.strictEqual(data2,'hello');
31+
}
32+
33+
asyncfunctiontestMultipleWrites(){
34+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
35+
36+
constconsumer=bc.push();
37+
38+
awaitwriter.write('a');
39+
awaitwriter.write('b');
40+
awaitwriter.write('c');
41+
awaitwriter.end();
42+
43+
constdata=awaittext(consumer);
44+
assert.strictEqual(data,'abc');
45+
}
46+
47+
asyncfunctiontestConsumerCount(){
48+
const{broadcast: bc}=broadcast();
49+
50+
assert.strictEqual(bc.consumerCount,0);
51+
52+
constc1=bc.push();
53+
assert.strictEqual(bc.consumerCount,1);
54+
55+
bc.push();
56+
assert.strictEqual(bc.consumerCount,2);
57+
58+
bc.cancel();
59+
60+
// After cancel, consumer count drops to 0
61+
assert.strictEqual(bc.consumerCount,0);
62+
63+
// Consumers are detached and yield nothing
64+
constbatches=[];
65+
forawait(constbatchofc1){
66+
batches.push(batch);
67+
}
68+
assert.strictEqual(batches.length,0);
69+
}
70+
71+
// =============================================================================
72+
// Writer methods
73+
// =============================================================================
74+
75+
asyncfunctiontestWriteSync(){
76+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 2});
77+
constconsumer=bc.push();
78+
79+
assert.strictEqual(writer.writeSync('a'),true);
80+
assert.strictEqual(writer.writeSync('b'),true);
81+
// Buffer full (highWaterMark=2, strict policy)
82+
assert.strictEqual(writer.writeSync('c'),false);
83+
84+
writer.endSync();
85+
86+
constdata=awaittext(consumer);
87+
assert.strictEqual(data,'ab');
88+
}
89+
90+
asyncfunctiontestWritevSync(){
91+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
92+
constconsumer=bc.push();
93+
94+
assert.strictEqual(writer.writevSync(['hello',' ','world']),true);
95+
writer.endSync();
96+
97+
constdata=awaittext(consumer);
98+
assert.strictEqual(data,'hello world');
99+
}
100+
101+
asyncfunctiontestWriterEnd(){
102+
const{ writer,broadcast: bc}=broadcast();
103+
constconsumer=bc.push();
104+
105+
awaitwriter.write('data');
106+
consttotalBytes=awaitwriter.end();
107+
assert.strictEqual(totalBytes,4);// 'data' = 4 UTF-8 bytes
108+
109+
constdata=awaittext(consumer);
110+
assert.strictEqual(data,'data');
111+
}
112+
113+
asyncfunctiontestWriterFail(){
114+
const{ writer,broadcast: bc}=broadcast();
115+
constconsumer=bc.push();
116+
117+
writer.fail(newError('test error'));
118+
119+
awaitassert.rejects(
120+
async()=>{
121+
// eslint-disable-next-line no-unused-vars
122+
forawait(const_ofconsumer){
123+
assert.fail('Should not reach here');
124+
}
125+
},
126+
{message: 'test error'},
127+
);
128+
}
129+
130+
// =============================================================================
131+
// Cancel
132+
// =============================================================================
133+
134+
asyncfunctiontestCancelWithoutReason(){
135+
const{broadcast: bc}=broadcast();
136+
constconsumer=bc.push();
137+
138+
bc.cancel();
139+
140+
constbatches=[];
141+
forawait(constbatchofconsumer){
142+
batches.push(batch);
143+
}
144+
assert.strictEqual(batches.length,0);
145+
}
146+
147+
asyncfunctiontestCancelWithReason(){
148+
const{broadcast: bc}=broadcast();
149+
150+
// Start a consumer that is waiting for data (promise pending)
151+
constconsumer=bc.push();
152+
constresultPromise=text(consumer).catch((err)=>err);
153+
154+
// Give the consumer time to enter the waiting state
155+
awaitnewPromise((resolve)=>setImmediate(resolve));
156+
157+
bc.cancel(newError('cancelled'));
158+
159+
constresult=awaitresultPromise;
160+
assert.ok(resultinstanceofError);
161+
assert.strictEqual(result.message,'cancelled');
162+
}
163+
164+
// =============================================================================
165+
// Writer fail detaches consumers
166+
// =============================================================================
167+
168+
asyncfunctiontestFailDetachesConsumers(){
169+
const{ writer,broadcast: bc}=broadcast();
170+
constconsumer1=bc.push();
171+
constconsumer2=bc.push();
172+
173+
assert.strictEqual(bc.consumerCount,2);
174+
175+
// Write some data, then fail the writer
176+
awaitwriter.write('data');
177+
awaitwriter.fail(newError('writer failed'));
178+
179+
// After fail, consumers are detached
180+
assert.strictEqual(bc.consumerCount,0);
181+
182+
// Both consumers should see the error
183+
awaitassert.rejects(
184+
async()=>{
185+
// eslint-disable-next-line no-unused-vars
186+
forawait(const_ofconsumer1){
187+
assert.fail('Should not reach here');
188+
}
189+
},
190+
{message: 'writer failed'},
191+
);
192+
193+
awaitassert.rejects(
194+
async()=>{
195+
// eslint-disable-next-line no-unused-vars
196+
forawait(const_ofconsumer2){
197+
assert.fail('Should not reach here');
198+
}
199+
},
200+
{message: 'writer failed'},
201+
);
202+
}
203+
204+
// =============================================================================
205+
// Writer fail idempotent
206+
// =============================================================================
207+
208+
asyncfunctiontestWriterFailIdempotent(){
209+
const{ writer,broadcast: bc}=broadcast();
210+
constconsumer=bc.push();
211+
writer.writeSync('hello');
212+
writer.fail(newError('fail!'));
213+
// Second call is a no-op (already errored)
214+
writer.fail(newError('fail2'));
215+
awaitassert.rejects(async()=>{
216+
// eslint-disable-next-line no-unused-vars
217+
forawait(const_ofconsumer){/* consume */}
218+
},{message: 'fail!'});
219+
}
220+
221+
// cancel() with falsy reason (0, "", false) should still treat as error
222+
asyncfunctiontestCancelWithFalsyReason(){
223+
const{broadcast: bc}=broadcast();
224+
constconsumer=bc.push();
225+
constresultPromise=text(consumer).catch((err)=>err);
226+
awaitnewPromise((resolve)=>setImmediate(resolve));
227+
bc.cancel(0);
228+
constresult=awaitresultPromise;
229+
assert.strictEqual(result,0);
230+
}
231+
232+
// Late-joining consumer should read from oldest buffered entry
233+
asyncfunctiontestLateJoinerSeesBufferedData(){
234+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 16});
235+
236+
// Write data before any consumer joins
237+
writer.writeSync('before-join');
238+
writer.endSync();
239+
240+
// Consumer joins after data is written
241+
constconsumer=bc.push();
242+
constresult=awaittext(consumer);
243+
assert.strictEqual(result,'before-join');
244+
}
245+
246+
Promise.all([
247+
testBasicBroadcast(),
248+
testMultipleWrites(),
249+
testConsumerCount(),
250+
testWriteSync(),
251+
testWritevSync(),
252+
testWriterEnd(),
253+
testWriterFail(),
254+
testCancelWithoutReason(),
255+
testCancelWithReason(),
256+
testCancelWithFalsyReason(),
257+
testFailDetachesConsumers(),
258+
testWriterFailIdempotent(),
259+
testLateJoinerSeesBufferedData(),
260+
]).then(common.mustCall());
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Commit 14c5473
Browse files
jasnelladuh95
jasnell
authored and
aduh95
committed
test: add tests for experimental stream/iter implementation
Signed-off-by: James M Snell <jasnell@gmail.com>
Assisted-By: Claude/Opus 4.6
PR-URL: #62066
Backport-PR-URL: #64675
Reviewed-By: Robert Nagy <ronagy@icloud.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
1 parent 28dc85d commit 14c5473
39 files changed
Lines changed: 8924 additions & 0 deletions
‎test/parallel/test-fs-promises-file-handle-pull.js‎
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‎test/parallel/test-fs-promises-file-handle-pullsync.js‎
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‎test/parallel/test-fs-promises-file-handle-writer.js‎
Lines changed: 1126 additions & 0 deletions
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‎test/parallel/test-stream-iter-broadcast-backpressure.js‎
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1+
// Flags: --experimental-stream-iter
2+
'use strict';
3+
4+
constcommon=require('../common');
5+
constassert=require('assert');
6+
const{ broadcast, text }=require('stream/iter');
7+
8+
// =============================================================================
9+
// Backpressure policies
10+
// =============================================================================
11+
12+
asyncfunctiontestDropOldest(){
13+
const{ writer,broadcast: bc}=broadcast({
14+
highWaterMark: 2,
15+
backpressure: 'drop-oldest',
16+
});
17+
constconsumer=bc.push();
18+
19+
writer.writeSync('first');
20+
writer.writeSync('second');
21+
// This should drop 'first'
22+
writer.writeSync('third');
23+
writer.endSync();
24+
25+
constdata=awaittext(consumer);
26+
assert.strictEqual(data,'secondthird');
27+
}
28+
29+
asyncfunctiontestDropNewest(){
30+
const{ writer,broadcast: bc}=broadcast({
31+
highWaterMark: 1,
32+
backpressure: 'drop-newest',
33+
});
34+
constconsumer=bc.push();
35+
36+
writer.writeSync('kept');
37+
// This should be silently dropped
38+
writer.writeSync('dropped');
39+
writer.endSync();
40+
41+
constdata=awaittext(consumer);
42+
assert.strictEqual(data,'kept');
43+
}
44+
45+
// =============================================================================
46+
// Block backpressure
47+
// =============================================================================
48+
49+
asyncfunctiontestBlockBackpressure(){
50+
const{ writer,broadcast: bc}=broadcast({
51+
highWaterMark: 1,
52+
backpressure: 'block',
53+
});
54+
constconsumer=bc.push();
55+
writer.writeSync('a');
56+
57+
// Next write should block
58+
letwriteResolved=false;
59+
constwritePromise=writer.write('b').then(()=>{writeResolved=true;});
60+
awaitnewPromise(setImmediate);
61+
assert.strictEqual(writeResolved,false);
62+
63+
// Drain consumer to unblock the pending write
64+
constiter=consumer[Symbol.asyncIterator]();
65+
constfirst=awaititer.next();
66+
assert.strictEqual(first.done,false);
67+
awaitnewPromise(setImmediate);
68+
assert.strictEqual(writeResolved,true);
69+
70+
writer.endSync();
71+
// Drain remaining data and verify completion
72+
constsecond=awaititer.next();
73+
assert.strictEqual(second.done,false);
74+
awaitwritePromise;
75+
}
76+
77+
// Verify block backpressure data flows correctly end-to-end
78+
asyncfunctiontestBlockBackpressureContent(){
79+
const{ writer,broadcast: bc}=broadcast({
80+
highWaterMark: 1,
81+
backpressure: 'block',
82+
});
83+
constconsumer=bc.push();
84+
85+
writer.writeSync('a');
86+
constwritePromise=writer.write('b');
87+
awaitnewPromise(setImmediate);
88+
89+
// Read all and verify content
90+
constiter=consumer[Symbol.asyncIterator]();
91+
constfirst=awaititer.next();
92+
assert.strictEqual(first.done,false);
93+
constfirstStr=newTextDecoder().decode(first.value[0]);
94+
assert.strictEqual(firstStr,'a');
95+
96+
awaitwritePromise;
97+
writer.endSync();
98+
99+
constsecond=awaititer.next();
100+
assert.strictEqual(second.done,false);
101+
constsecondStr=newTextDecoder().decode(second.value[0]);
102+
assert.strictEqual(secondStr,'b');
103+
104+
constdone=awaititer.next();
105+
assert.strictEqual(done.done,true);
106+
}
107+
108+
// Writev async path
109+
asyncfunctiontestWritevAsync(){
110+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
111+
constconsumer=bc.push();
112+
113+
awaitwriter.writev(['hello',' ','world']);
114+
awaitwriter.end();
115+
116+
constdata=awaittext(consumer);
117+
assert.strictEqual(data,'hello world');
118+
}
119+
120+
// endSync returns the total byte count
121+
asyncfunctiontestEndSyncReturnValue(){
122+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
123+
bc.push();// Need a consumer to write to
124+
125+
writer.writeSync('hello');// 5 bytes
126+
writer.writeSync(' world');// 6 bytes
127+
consttotal=writer.endSync();
128+
assert.strictEqual(total,11);
129+
}
130+
131+
Promise.all([
132+
testDropOldest(),
133+
testDropNewest(),
134+
testBlockBackpressure(),
135+
testBlockBackpressureContent(),
136+
testWritevAsync(),
137+
testEndSyncReturnValue(),
138+
]).then(common.mustCall());
‎test/parallel/test-stream-iter-broadcast-basic.js‎
Lines changed: 260 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,260 @@
1+
// Flags: --experimental-stream-iter
2+
'use strict';
3+
4+
constcommon=require('../common');
5+
constassert=require('assert');
6+
const{ broadcast, text }=require('stream/iter');
7+
8+
// =============================================================================
9+
// Basic broadcast
10+
// =============================================================================
11+
12+
asyncfunctiontestBasicBroadcast(){
13+
const{ writer,broadcast: bc}=broadcast();
14+
15+
// Create two consumers
16+
constconsumer1=bc.push();
17+
constconsumer2=bc.push();
18+
19+
assert.strictEqual(bc.consumerCount,2);
20+
21+
awaitwriter.write('hello');
22+
awaitwriter.end();
23+
24+
const[data1,data2]=awaitPromise.all([
25+
text(consumer1),
26+
text(consumer2),
27+
]);
28+
29+
assert.strictEqual(data1,'hello');
30+
assert.strictEqual(data2,'hello');
31+
}
32+
33+
asyncfunctiontestMultipleWrites(){
34+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
35+
36+
constconsumer=bc.push();
37+
38+
awaitwriter.write('a');
39+
awaitwriter.write('b');
40+
awaitwriter.write('c');
41+
awaitwriter.end();
42+
43+
constdata=awaittext(consumer);
44+
assert.strictEqual(data,'abc');
45+
}
46+
47+
asyncfunctiontestConsumerCount(){
48+
const{broadcast: bc}=broadcast();
49+
50+
assert.strictEqual(bc.consumerCount,0);
51+
52+
constc1=bc.push();
53+
assert.strictEqual(bc.consumerCount,1);
54+
55+
bc.push();
56+
assert.strictEqual(bc.consumerCount,2);
57+
58+
bc.cancel();
59+
60+
// After cancel, consumer count drops to 0
61+
assert.strictEqual(bc.consumerCount,0);
62+
63+
// Consumers are detached and yield nothing
64+
constbatches=[];
65+
forawait(constbatchofc1){
66+
batches.push(batch);
67+
}
68+
assert.strictEqual(batches.length,0);
69+
}
70+
71+
// =============================================================================
72+
// Writer methods
73+
// =============================================================================
74+
75+
asyncfunctiontestWriteSync(){
76+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 2});
77+
constconsumer=bc.push();
78+
79+
assert.strictEqual(writer.writeSync('a'),true);
80+
assert.strictEqual(writer.writeSync('b'),true);
81+
// Buffer full (highWaterMark=2, strict policy)
82+
assert.strictEqual(writer.writeSync('c'),false);
83+
84+
writer.endSync();
85+
86+
constdata=awaittext(consumer);
87+
assert.strictEqual(data,'ab');
88+
}
89+
90+
asyncfunctiontestWritevSync(){
91+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
92+
constconsumer=bc.push();
93+
94+
assert.strictEqual(writer.writevSync(['hello',' ','world']),true);
95+
writer.endSync();
96+
97+
constdata=awaittext(consumer);
98+
assert.strictEqual(data,'hello world');
99+
}
100+
101+
asyncfunctiontestWriterEnd(){
102+
const{ writer,broadcast: bc}=broadcast();
103+
constconsumer=bc.push();
104+
105+
awaitwriter.write('data');
106+
consttotalBytes=awaitwriter.end();
107+
assert.strictEqual(totalBytes,4);// 'data' = 4 UTF-8 bytes
108+
109+
constdata=awaittext(consumer);
110+
assert.strictEqual(data,'data');
111+
}
112+
113+
asyncfunctiontestWriterFail(){
114+
const{ writer,broadcast: bc}=broadcast();
115+
constconsumer=bc.push();
116+
117+
writer.fail(newError('test error'));
118+
119+
awaitassert.rejects(
120+
async()=>{
121+
// eslint-disable-next-line no-unused-vars
122+
forawait(const_ofconsumer){
123+
assert.fail('Should not reach here');
124+
}
125+
},
126+
{message: 'test error'},
127+
);
128+
}
129+
130+
// =============================================================================
131+
// Cancel
132+
// =============================================================================
133+
134+
asyncfunctiontestCancelWithoutReason(){
135+
const{broadcast: bc}=broadcast();
136+
constconsumer=bc.push();
137+
138+
bc.cancel();
139+
140+
constbatches=[];
141+
forawait(constbatchofconsumer){
142+
batches.push(batch);
143+
}
144+
assert.strictEqual(batches.length,0);
145+
}
146+
147+
asyncfunctiontestCancelWithReason(){
148+
const{broadcast: bc}=broadcast();
149+
150+
// Start a consumer that is waiting for data (promise pending)
151+
constconsumer=bc.push();
152+
constresultPromise=text(consumer).catch((err)=>err);
153+
154+
// Give the consumer time to enter the waiting state
155+
awaitnewPromise((resolve)=>setImmediate(resolve));
156+
157+
bc.cancel(newError('cancelled'));
158+
159+
constresult=awaitresultPromise;
160+
assert.ok(resultinstanceofError);
161+
assert.strictEqual(result.message,'cancelled');
162+
}
163+
164+
// =============================================================================
165+
// Writer fail detaches consumers
166+
// =============================================================================
167+
168+
asyncfunctiontestFailDetachesConsumers(){
169+
const{ writer,broadcast: bc}=broadcast();
170+
constconsumer1=bc.push();
171+
constconsumer2=bc.push();
172+
173+
assert.strictEqual(bc.consumerCount,2);
174+
175+
// Write some data, then fail the writer
176+
awaitwriter.write('data');
177+
awaitwriter.fail(newError('writer failed'));
178+
179+
// After fail, consumers are detached
180+
assert.strictEqual(bc.consumerCount,0);
181+
182+
// Both consumers should see the error
183+
awaitassert.rejects(
184+
async()=>{
185+
// eslint-disable-next-line no-unused-vars
186+
forawait(const_ofconsumer1){
187+
assert.fail('Should not reach here');
188+
}
189+
},
190+
{message: 'writer failed'},
191+
);
192+
193+
awaitassert.rejects(
194+
async()=>{
195+
// eslint-disable-next-line no-unused-vars
196+
forawait(const_ofconsumer2){
197+
assert.fail('Should not reach here');
198+
}
199+
},
200+
{message: 'writer failed'},
201+
);
202+
}
203+
204+
// =============================================================================
205+
// Writer fail idempotent
206+
// =============================================================================
207+
208+
asyncfunctiontestWriterFailIdempotent(){
209+
const{ writer,broadcast: bc}=broadcast();
210+
constconsumer=bc.push();
211+
writer.writeSync('hello');
212+
writer.fail(newError('fail!'));
213+
// Second call is a no-op (already errored)
214+
writer.fail(newError('fail2'));
215+
awaitassert.rejects(async()=>{
216+
// eslint-disable-next-line no-unused-vars
217+
forawait(const_ofconsumer){/* consume */}
218+
},{message: 'fail!'});
219+
}
220+
221+
// cancel() with falsy reason (0, "", false) should still treat as error
222+
asyncfunctiontestCancelWithFalsyReason(){
223+
const{broadcast: bc}=broadcast();
224+
constconsumer=bc.push();
225+
constresultPromise=text(consumer).catch((err)=>err);
226+
awaitnewPromise((resolve)=>setImmediate(resolve));
227+
bc.cancel(0);
228+
constresult=awaitresultPromise;
229+
assert.strictEqual(result,0);
230+
}
231+
232+
// Late-joining consumer should read from oldest buffered entry
233+
asyncfunctiontestLateJoinerSeesBufferedData(){
234+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 16});
235+
236+
// Write data before any consumer joins
237+
writer.writeSync('before-join');
238+
writer.endSync();
239+
240+
// Consumer joins after data is written
241+
constconsumer=bc.push();
242+
constresult=awaittext(consumer);
243+
assert.strictEqual(result,'before-join');
244+
}
245+
246+
Promise.all([
247+
testBasicBroadcast(),
248+
testMultipleWrites(),
249+
testConsumerCount(),
250+
testWriteSync(),
251+
testWritevSync(),
252+
testWriterEnd(),
253+
testWriterFail(),
254+
testCancelWithoutReason(),
255+
testCancelWithReason(),
256+
testCancelWithFalsyReason(),
257+
testFailDetachesConsumers(),
258+
testWriterFailIdempotent(),
259+
testLateJoinerSeesBufferedData(),
260+
]).then(common.mustCall());
0 commit comments
Comments
 (0)

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Commit 14c5473
Browse files
jasnelladuh95
jasnell
authored and
aduh95
committed
test: add tests for experimental stream/iter implementation
Signed-off-by: James M Snell <jasnell@gmail.com>
Assisted-By: Claude/Opus 4.6
PR-URL: #62066
Backport-PR-URL: #64675
Reviewed-By: Robert Nagy <ronagy@icloud.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
1 parent 28dc85d commit 14c5473
39 files changed
Lines changed: 8924 additions & 0 deletions
‎test/parallel/test-fs-promises-file-handle-pull.js‎
Lines changed: 440 additions & 0 deletions
Large diffs are not rendered by default.
‎test/parallel/test-fs-promises-file-handle-pullsync.js‎
Lines changed: 498 additions & 0 deletions
Large diffs are not rendered by default.
‎test/parallel/test-fs-promises-file-handle-writer.js‎
Lines changed: 1126 additions & 0 deletions
Large diffs are not rendered by default.
‎test/parallel/test-stream-iter-broadcast-backpressure.js‎
Lines changed: 138 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,138 @@
1+
// Flags: --experimental-stream-iter
2+
'use strict';
3+
4+
constcommon=require('../common');
5+
constassert=require('assert');
6+
const{ broadcast, text }=require('stream/iter');
7+
8+
// =============================================================================
9+
// Backpressure policies
10+
// =============================================================================
11+
12+
asyncfunctiontestDropOldest(){
13+
const{ writer,broadcast: bc}=broadcast({
14+
highWaterMark: 2,
15+
backpressure: 'drop-oldest',
16+
});
17+
constconsumer=bc.push();
18+
19+
writer.writeSync('first');
20+
writer.writeSync('second');
21+
// This should drop 'first'
22+
writer.writeSync('third');
23+
writer.endSync();
24+
25+
constdata=awaittext(consumer);
26+
assert.strictEqual(data,'secondthird');
27+
}
28+
29+
asyncfunctiontestDropNewest(){
30+
const{ writer,broadcast: bc}=broadcast({
31+
highWaterMark: 1,
32+
backpressure: 'drop-newest',
33+
});
34+
constconsumer=bc.push();
35+
36+
writer.writeSync('kept');
37+
// This should be silently dropped
38+
writer.writeSync('dropped');
39+
writer.endSync();
40+
41+
constdata=awaittext(consumer);
42+
assert.strictEqual(data,'kept');
43+
}
44+
45+
// =============================================================================
46+
// Block backpressure
47+
// =============================================================================
48+
49+
asyncfunctiontestBlockBackpressure(){
50+
const{ writer,broadcast: bc}=broadcast({
51+
highWaterMark: 1,
52+
backpressure: 'block',
53+
});
54+
constconsumer=bc.push();
55+
writer.writeSync('a');
56+
57+
// Next write should block
58+
letwriteResolved=false;
59+
constwritePromise=writer.write('b').then(()=>{writeResolved=true;});
60+
awaitnewPromise(setImmediate);
61+
assert.strictEqual(writeResolved,false);
62+
63+
// Drain consumer to unblock the pending write
64+
constiter=consumer[Symbol.asyncIterator]();
65+
constfirst=awaititer.next();
66+
assert.strictEqual(first.done,false);
67+
awaitnewPromise(setImmediate);
68+
assert.strictEqual(writeResolved,true);
69+
70+
writer.endSync();
71+
// Drain remaining data and verify completion
72+
constsecond=awaititer.next();
73+
assert.strictEqual(second.done,false);
74+
awaitwritePromise;
75+
}
76+
77+
// Verify block backpressure data flows correctly end-to-end
78+
asyncfunctiontestBlockBackpressureContent(){
79+
const{ writer,broadcast: bc}=broadcast({
80+
highWaterMark: 1,
81+
backpressure: 'block',
82+
});
83+
constconsumer=bc.push();
84+
85+
writer.writeSync('a');
86+
constwritePromise=writer.write('b');
87+
awaitnewPromise(setImmediate);
88+
89+
// Read all and verify content
90+
constiter=consumer[Symbol.asyncIterator]();
91+
constfirst=awaititer.next();
92+
assert.strictEqual(first.done,false);
93+
constfirstStr=newTextDecoder().decode(first.value[0]);
94+
assert.strictEqual(firstStr,'a');
95+
96+
awaitwritePromise;
97+
writer.endSync();
98+
99+
constsecond=awaititer.next();
100+
assert.strictEqual(second.done,false);
101+
constsecondStr=newTextDecoder().decode(second.value[0]);
102+
assert.strictEqual(secondStr,'b');
103+
104+
constdone=awaititer.next();
105+
assert.strictEqual(done.done,true);
106+
}
107+
108+
// Writev async path
109+
asyncfunctiontestWritevAsync(){
110+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
111+
constconsumer=bc.push();
112+
113+
awaitwriter.writev(['hello',' ','world']);
114+
awaitwriter.end();
115+
116+
constdata=awaittext(consumer);
117+
assert.strictEqual(data,'hello world');
118+
}
119+
120+
// endSync returns the total byte count
121+
asyncfunctiontestEndSyncReturnValue(){
122+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
123+
bc.push();// Need a consumer to write to
124+
125+
writer.writeSync('hello');// 5 bytes
126+
writer.writeSync(' world');// 6 bytes
127+
consttotal=writer.endSync();
128+
assert.strictEqual(total,11);
129+
}
130+
131+
Promise.all([
132+
testDropOldest(),
133+
testDropNewest(),
134+
testBlockBackpressure(),
135+
testBlockBackpressureContent(),
136+
testWritevAsync(),
137+
testEndSyncReturnValue(),
138+
]).then(common.mustCall());
‎test/parallel/test-stream-iter-broadcast-basic.js‎
Lines changed: 260 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,260 @@
1+
// Flags: --experimental-stream-iter
2+
'use strict';
3+
4+
constcommon=require('../common');
5+
constassert=require('assert');
6+
const{ broadcast, text }=require('stream/iter');
7+
8+
// =============================================================================
9+
// Basic broadcast
10+
// =============================================================================
11+
12+
asyncfunctiontestBasicBroadcast(){
13+
const{ writer,broadcast: bc}=broadcast();
14+
15+
// Create two consumers
16+
constconsumer1=bc.push();
17+
constconsumer2=bc.push();
18+
19+
assert.strictEqual(bc.consumerCount,2);
20+
21+
awaitwriter.write('hello');
22+
awaitwriter.end();
23+
24+
const[data1,data2]=awaitPromise.all([
25+
text(consumer1),
26+
text(consumer2),
27+
]);
28+
29+
assert.strictEqual(data1,'hello');
30+
assert.strictEqual(data2,'hello');
31+
}
32+
33+
asyncfunctiontestMultipleWrites(){
34+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
35+
36+
constconsumer=bc.push();
37+
38+
awaitwriter.write('a');
39+
awaitwriter.write('b');
40+
awaitwriter.write('c');
41+
awaitwriter.end();
42+
43+
constdata=awaittext(consumer);
44+
assert.strictEqual(data,'abc');
45+
}
46+
47+
asyncfunctiontestConsumerCount(){
48+
const{broadcast: bc}=broadcast();
49+
50+
assert.strictEqual(bc.consumerCount,0);
51+
52+
constc1=bc.push();
53+
assert.strictEqual(bc.consumerCount,1);
54+
55+
bc.push();
56+
assert.strictEqual(bc.consumerCount,2);
57+
58+
bc.cancel();
59+
60+
// After cancel, consumer count drops to 0
61+
assert.strictEqual(bc.consumerCount,0);
62+
63+
// Consumers are detached and yield nothing
64+
constbatches=[];
65+
forawait(constbatchofc1){
66+
batches.push(batch);
67+
}
68+
assert.strictEqual(batches.length,0);
69+
}
70+
71+
// =============================================================================
72+
// Writer methods
73+
// =============================================================================
74+
75+
asyncfunctiontestWriteSync(){
76+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 2});
77+
constconsumer=bc.push();
78+
79+
assert.strictEqual(writer.writeSync('a'),true);
80+
assert.strictEqual(writer.writeSync('b'),true);
81+
// Buffer full (highWaterMark=2, strict policy)
82+
assert.strictEqual(writer.writeSync('c'),false);
83+
84+
writer.endSync();
85+
86+
constdata=awaittext(consumer);
87+
assert.strictEqual(data,'ab');
88+
}
89+
90+
asyncfunctiontestWritevSync(){
91+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
92+
constconsumer=bc.push();
93+
94+
assert.strictEqual(writer.writevSync(['hello',' ','world']),true);
95+
writer.endSync();
96+
97+
constdata=awaittext(consumer);
98+
assert.strictEqual(data,'hello world');
99+
}
100+
101+
asyncfunctiontestWriterEnd(){
102+
const{ writer,broadcast: bc}=broadcast();
103+
constconsumer=bc.push();
104+
105+
awaitwriter.write('data');
106+
consttotalBytes=awaitwriter.end();
107+
assert.strictEqual(totalBytes,4);// 'data' = 4 UTF-8 bytes
108+
109+
constdata=awaittext(consumer);
110+
assert.strictEqual(data,'data');
111+
}
112+
113+
asyncfunctiontestWriterFail(){
114+
const{ writer,broadcast: bc}=broadcast();
115+
constconsumer=bc.push();
116+
117+
writer.fail(newError('test error'));
118+
119+
awaitassert.rejects(
120+
async()=>{
121+
// eslint-disable-next-line no-unused-vars
122+
forawait(const_ofconsumer){
123+
assert.fail('Should not reach here');
124+
}
125+
},
126+
{message: 'test error'},
127+
);
128+
}
129+
130+
// =============================================================================
131+
// Cancel
132+
// =============================================================================
133+
134+
asyncfunctiontestCancelWithoutReason(){
135+
const{broadcast: bc}=broadcast();
136+
constconsumer=bc.push();
137+
138+
bc.cancel();
139+
140+
constbatches=[];
141+
forawait(constbatchofconsumer){
142+
batches.push(batch);
143+
}
144+
assert.strictEqual(batches.length,0);
145+
}
146+
147+
asyncfunctiontestCancelWithReason(){
148+
const{broadcast: bc}=broadcast();
149+
150+
// Start a consumer that is waiting for data (promise pending)
151+
constconsumer=bc.push();
152+
constresultPromise=text(consumer).catch((err)=>err);
153+
154+
// Give the consumer time to enter the waiting state
155+
awaitnewPromise((resolve)=>setImmediate(resolve));
156+
157+
bc.cancel(newError('cancelled'));
158+
159+
constresult=awaitresultPromise;
160+
assert.ok(resultinstanceofError);
161+
assert.strictEqual(result.message,'cancelled');
162+
}
163+
164+
// =============================================================================
165+
// Writer fail detaches consumers
166+
// =============================================================================
167+
168+
asyncfunctiontestFailDetachesConsumers(){
169+
const{ writer,broadcast: bc}=broadcast();
170+
constconsumer1=bc.push();
171+
constconsumer2=bc.push();
172+
173+
assert.strictEqual(bc.consumerCount,2);
174+
175+
// Write some data, then fail the writer
176+
awaitwriter.write('data');
177+
awaitwriter.fail(newError('writer failed'));
178+
179+
// After fail, consumers are detached
180+
assert.strictEqual(bc.consumerCount,0);
181+
182+
// Both consumers should see the error
183+
awaitassert.rejects(
184+
async()=>{
185+
// eslint-disable-next-line no-unused-vars
186+
forawait(const_ofconsumer1){
187+
assert.fail('Should not reach here');
188+
}
189+
},
190+
{message: 'writer failed'},
191+
);
192+
193+
awaitassert.rejects(
194+
async()=>{
195+
// eslint-disable-next-line no-unused-vars
196+
forawait(const_ofconsumer2){
197+
assert.fail('Should not reach here');
198+
}
199+
},
200+
{message: 'writer failed'},
201+
);
202+
}
203+
204+
// =============================================================================
205+
// Writer fail idempotent
206+
// =============================================================================
207+
208+
asyncfunctiontestWriterFailIdempotent(){
209+
const{ writer,broadcast: bc}=broadcast();
210+
constconsumer=bc.push();
211+
writer.writeSync('hello');
212+
writer.fail(newError('fail!'));
213+
// Second call is a no-op (already errored)
214+
writer.fail(newError('fail2'));
215+
awaitassert.rejects(async()=>{
216+
// eslint-disable-next-line no-unused-vars
217+
forawait(const_ofconsumer){/* consume */}
218+
},{message: 'fail!'});
219+
}
220+
221+
// cancel() with falsy reason (0, "", false) should still treat as error
222+
asyncfunctiontestCancelWithFalsyReason(){
223+
const{broadcast: bc}=broadcast();
224+
constconsumer=bc.push();
225+
constresultPromise=text(consumer).catch((err)=>err);
226+
awaitnewPromise((resolve)=>setImmediate(resolve));
227+
bc.cancel(0);
228+
constresult=awaitresultPromise;
229+
assert.strictEqual(result,0);
230+
}
231+
232+
// Late-joining consumer should read from oldest buffered entry
233+
asyncfunctiontestLateJoinerSeesBufferedData(){
234+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 16});
235+
236+
// Write data before any consumer joins
237+
writer.writeSync('before-join');
238+
writer.endSync();
239+
240+
// Consumer joins after data is written
241+
constconsumer=bc.push();
242+
constresult=awaittext(consumer);
243+
assert.strictEqual(result,'before-join');
244+
}
245+
246+
Promise.all([
247+
testBasicBroadcast(),
248+
testMultipleWrites(),
249+
testConsumerCount(),
250+
testWriteSync(),
251+
testWritevSync(),
252+
testWriterEnd(),
253+
testWriterFail(),
254+
testCancelWithoutReason(),
255+
testCancelWithReason(),
256+
testCancelWithFalsyReason(),
257+
testFailDetachesConsumers(),
258+
testWriterFailIdempotent(),
259+
testLateJoinerSeesBufferedData(),
260+
]).then(common.mustCall());
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 (0)

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
Commit 14c5473
Browse files
jasnelladuh95
jasnell
authored and
aduh95
committed
test: add tests for experimental stream/iter implementation
Signed-off-by: James M Snell <jasnell@gmail.com>
Assisted-By: Claude/Opus 4.6
PR-URL: #62066
Backport-PR-URL: #64675
Reviewed-By: Robert Nagy <ronagy@icloud.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
1 parent 28dc85d commit 14c5473
39 files changed
Lines changed: 8924 additions & 0 deletions
‎test/parallel/test-fs-promises-file-handle-pull.js‎
Lines changed: 440 additions & 0 deletions
Large diffs are not rendered by default.
‎test/parallel/test-fs-promises-file-handle-pullsync.js‎
Lines changed: 498 additions & 0 deletions
Large diffs are not rendered by default.
‎test/parallel/test-fs-promises-file-handle-writer.js‎
Lines changed: 1126 additions & 0 deletions
Large diffs are not rendered by default.
‎test/parallel/test-stream-iter-broadcast-backpressure.js‎
Lines changed: 138 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,138 @@
1+
// Flags: --experimental-stream-iter
2+
'use strict';
3+
4+
constcommon=require('../common');
5+
constassert=require('assert');
6+
const{ broadcast, text }=require('stream/iter');
7+
8+
// =============================================================================
9+
// Backpressure policies
10+
// =============================================================================
11+
12+
asyncfunctiontestDropOldest(){
13+
const{ writer,broadcast: bc}=broadcast({
14+
highWaterMark: 2,
15+
backpressure: 'drop-oldest',
16+
});
17+
constconsumer=bc.push();
18+
19+
writer.writeSync('first');
20+
writer.writeSync('second');
21+
// This should drop 'first'
22+
writer.writeSync('third');
23+
writer.endSync();
24+
25+
constdata=awaittext(consumer);
26+
assert.strictEqual(data,'secondthird');
27+
}
28+
29+
asyncfunctiontestDropNewest(){
30+
const{ writer,broadcast: bc}=broadcast({
31+
highWaterMark: 1,
32+
backpressure: 'drop-newest',
33+
});
34+
constconsumer=bc.push();
35+
36+
writer.writeSync('kept');
37+
// This should be silently dropped
38+
writer.writeSync('dropped');
39+
writer.endSync();
40+
41+
constdata=awaittext(consumer);
42+
assert.strictEqual(data,'kept');
43+
}
44+
45+
// =============================================================================
46+
// Block backpressure
47+
// =============================================================================
48+
49+
asyncfunctiontestBlockBackpressure(){
50+
const{ writer,broadcast: bc}=broadcast({
51+
highWaterMark: 1,
52+
backpressure: 'block',
53+
});
54+
constconsumer=bc.push();
55+
writer.writeSync('a');
56+
57+
// Next write should block
58+
letwriteResolved=false;
59+
constwritePromise=writer.write('b').then(()=>{writeResolved=true;});
60+
awaitnewPromise(setImmediate);
61+
assert.strictEqual(writeResolved,false);
62+
63+
// Drain consumer to unblock the pending write
64+
constiter=consumer[Symbol.asyncIterator]();
65+
constfirst=awaititer.next();
66+
assert.strictEqual(first.done,false);
67+
awaitnewPromise(setImmediate);
68+
assert.strictEqual(writeResolved,true);
69+
70+
writer.endSync();
71+
// Drain remaining data and verify completion
72+
constsecond=awaititer.next();
73+
assert.strictEqual(second.done,false);
74+
awaitwritePromise;
75+
}
76+
77+
// Verify block backpressure data flows correctly end-to-end
78+
asyncfunctiontestBlockBackpressureContent(){
79+
const{ writer,broadcast: bc}=broadcast({
80+
highWaterMark: 1,
81+
backpressure: 'block',
82+
});
83+
constconsumer=bc.push();
84+
85+
writer.writeSync('a');
86+
constwritePromise=writer.write('b');
87+
awaitnewPromise(setImmediate);
88+
89+
// Read all and verify content
90+
constiter=consumer[Symbol.asyncIterator]();
91+
constfirst=awaititer.next();
92+
assert.strictEqual(first.done,false);
93+
constfirstStr=newTextDecoder().decode(first.value[0]);
94+
assert.strictEqual(firstStr,'a');
95+
96+
awaitwritePromise;
97+
writer.endSync();
98+
99+
constsecond=awaititer.next();
100+
assert.strictEqual(second.done,false);
101+
constsecondStr=newTextDecoder().decode(second.value[0]);
102+
assert.strictEqual(secondStr,'b');
103+
104+
constdone=awaititer.next();
105+
assert.strictEqual(done.done,true);
106+
}
107+
108+
// Writev async path
109+
asyncfunctiontestWritevAsync(){
110+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
111+
constconsumer=bc.push();
112+
113+
awaitwriter.writev(['hello',' ','world']);
114+
awaitwriter.end();
115+
116+
constdata=awaittext(consumer);
117+
assert.strictEqual(data,'hello world');
118+
}
119+
120+
// endSync returns the total byte count
121+
asyncfunctiontestEndSyncReturnValue(){
122+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
123+
bc.push();// Need a consumer to write to
124+
125+
writer.writeSync('hello');// 5 bytes
126+
writer.writeSync(' world');// 6 bytes
127+
consttotal=writer.endSync();
128+
assert.strictEqual(total,11);
129+
}
130+
131+
Promise.all([
132+
testDropOldest(),
133+
testDropNewest(),
134+
testBlockBackpressure(),
135+
testBlockBackpressureContent(),
136+
testWritevAsync(),
137+
testEndSyncReturnValue(),
138+
]).then(common.mustCall());
‎test/parallel/test-stream-iter-broadcast-basic.js‎
Lines changed: 260 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,260 @@
1+
// Flags: --experimental-stream-iter
2+
'use strict';
3+
4+
constcommon=require('../common');
5+
constassert=require('assert');
6+
const{ broadcast, text }=require('stream/iter');
7+
8+
// =============================================================================
9+
// Basic broadcast
10+
// =============================================================================
11+
12+
asyncfunctiontestBasicBroadcast(){
13+
const{ writer,broadcast: bc}=broadcast();
14+
15+
// Create two consumers
16+
constconsumer1=bc.push();
17+
constconsumer2=bc.push();
18+
19+
assert.strictEqual(bc.consumerCount,2);
20+
21+
awaitwriter.write('hello');
22+
awaitwriter.end();
23+
24+
const[data1,data2]=awaitPromise.all([
25+
text(consumer1),
26+
text(consumer2),
27+
]);
28+
29+
assert.strictEqual(data1,'hello');
30+
assert.strictEqual(data2,'hello');
31+
}
32+
33+
asyncfunctiontestMultipleWrites(){
34+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
35+
36+
constconsumer=bc.push();
37+
38+
awaitwriter.write('a');
39+
awaitwriter.write('b');
40+
awaitwriter.write('c');
41+
awaitwriter.end();
42+
43+
constdata=awaittext(consumer);
44+
assert.strictEqual(data,'abc');
45+
}
46+
47+
asyncfunctiontestConsumerCount(){
48+
const{broadcast: bc}=broadcast();
49+
50+
assert.strictEqual(bc.consumerCount,0);
51+
52+
constc1=bc.push();
53+
assert.strictEqual(bc.consumerCount,1);
54+
55+
bc.push();
56+
assert.strictEqual(bc.consumerCount,2);
57+
58+
bc.cancel();
59+
60+
// After cancel, consumer count drops to 0
61+
assert.strictEqual(bc.consumerCount,0);
62+
63+
// Consumers are detached and yield nothing
64+
constbatches=[];
65+
forawait(constbatchofc1){
66+
batches.push(batch);
67+
}
68+
assert.strictEqual(batches.length,0);
69+
}
70+
71+
// =============================================================================
72+
// Writer methods
73+
// =============================================================================
74+
75+
asyncfunctiontestWriteSync(){
76+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 2});
77+
constconsumer=bc.push();
78+
79+
assert.strictEqual(writer.writeSync('a'),true);
80+
assert.strictEqual(writer.writeSync('b'),true);
81+
// Buffer full (highWaterMark=2, strict policy)
82+
assert.strictEqual(writer.writeSync('c'),false);
83+
84+
writer.endSync();
85+
86+
constdata=awaittext(consumer);
87+
assert.strictEqual(data,'ab');
88+
}
89+
90+
asyncfunctiontestWritevSync(){
91+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
92+
constconsumer=bc.push();
93+
94+
assert.strictEqual(writer.writevSync(['hello',' ','world']),true);
95+
writer.endSync();
96+
97+
constdata=awaittext(consumer);
98+
assert.strictEqual(data,'hello world');
99+
}
100+
101+
asyncfunctiontestWriterEnd(){
102+
const{ writer,broadcast: bc}=broadcast();
103+
constconsumer=bc.push();
104+
105+
awaitwriter.write('data');
106+
consttotalBytes=awaitwriter.end();
107+
assert.strictEqual(totalBytes,4);// 'data' = 4 UTF-8 bytes
108+
109+
constdata=awaittext(consumer);
110+
assert.strictEqual(data,'data');
111+
}
112+
113+
asyncfunctiontestWriterFail(){
114+
const{ writer,broadcast: bc}=broadcast();
115+
constconsumer=bc.push();
116+
117+
writer.fail(newError('test error'));
118+
119+
awaitassert.rejects(
120+
async()=>{
121+
// eslint-disable-next-line no-unused-vars
122+
forawait(const_ofconsumer){
123+
assert.fail('Should not reach here');
124+
}
125+
},
126+
{message: 'test error'},
127+
);
128+
}
129+
130+
// =============================================================================
131+
// Cancel
132+
// =============================================================================
133+
134+
asyncfunctiontestCancelWithoutReason(){
135+
const{broadcast: bc}=broadcast();
136+
constconsumer=bc.push();
137+
138+
bc.cancel();
139+
140+
constbatches=[];
141+
forawait(constbatchofconsumer){
142+
batches.push(batch);
143+
}
144+
assert.strictEqual(batches.length,0);
145+
}
146+
147+
asyncfunctiontestCancelWithReason(){
148+
const{broadcast: bc}=broadcast();
149+
150+
// Start a consumer that is waiting for data (promise pending)
151+
constconsumer=bc.push();
152+
constresultPromise=text(consumer).catch((err)=>err);
153+
154+
// Give the consumer time to enter the waiting state
155+
awaitnewPromise((resolve)=>setImmediate(resolve));
156+
157+
bc.cancel(newError('cancelled'));
158+
159+
constresult=awaitresultPromise;
160+
assert.ok(resultinstanceofError);
161+
assert.strictEqual(result.message,'cancelled');
162+
}
163+
164+
// =============================================================================
165+
// Writer fail detaches consumers
166+
// =============================================================================
167+
168+
asyncfunctiontestFailDetachesConsumers(){
169+
const{ writer,broadcast: bc}=broadcast();
170+
constconsumer1=bc.push();
171+
constconsumer2=bc.push();
172+
173+
assert.strictEqual(bc.consumerCount,2);
174+
175+
// Write some data, then fail the writer
176+
awaitwriter.write('data');
177+
awaitwriter.fail(newError('writer failed'));
178+
179+
// After fail, consumers are detached
180+
assert.strictEqual(bc.consumerCount,0);
181+
182+
// Both consumers should see the error
183+
awaitassert.rejects(
184+
async()=>{
185+
// eslint-disable-next-line no-unused-vars
186+
forawait(const_ofconsumer1){
187+
assert.fail('Should not reach here');
188+
}
189+
},
190+
{message: 'writer failed'},
191+
);
192+
193+
awaitassert.rejects(
194+
async()=>{
195+
// eslint-disable-next-line no-unused-vars
196+
forawait(const_ofconsumer2){
197+
assert.fail('Should not reach here');
198+
}
199+
},
200+
{message: 'writer failed'},
201+
);
202+
}
203+
204+
// =============================================================================
205+
// Writer fail idempotent
206+
// =============================================================================
207+
208+
asyncfunctiontestWriterFailIdempotent(){
209+
const{ writer,broadcast: bc}=broadcast();
210+
constconsumer=bc.push();
211+
writer.writeSync('hello');
212+
writer.fail(newError('fail!'));
213+
// Second call is a no-op (already errored)
214+
writer.fail(newError('fail2'));
215+
awaitassert.rejects(async()=>{
216+
// eslint-disable-next-line no-unused-vars
217+
forawait(const_ofconsumer){/* consume */}
218+
},{message: 'fail!'});
219+
}
220+
221+
// cancel() with falsy reason (0, "", false) should still treat as error
222+
asyncfunctiontestCancelWithFalsyReason(){
223+
const{broadcast: bc}=broadcast();
224+
constconsumer=bc.push();
225+
constresultPromise=text(consumer).catch((err)=>err);
226+
awaitnewPromise((resolve)=>setImmediate(resolve));
227+
bc.cancel(0);
228+
constresult=awaitresultPromise;
229+
assert.strictEqual(result,0);
230+
}
231+
232+
// Late-joining consumer should read from oldest buffered entry
233+
asyncfunctiontestLateJoinerSeesBufferedData(){
234+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 16});
235+
236+
// Write data before any consumer joins
237+
writer.writeSync('before-join');
238+
writer.endSync();
239+
240+
// Consumer joins after data is written
241+
constconsumer=bc.push();
242+
constresult=awaittext(consumer);
243+
assert.strictEqual(result,'before-join');
244+
}
245+
246+
Promise.all([
247+
testBasicBroadcast(),
248+
testMultipleWrites(),
249+
testConsumerCount(),
250+
testWriteSync(),
251+
testWritevSync(),
252+
testWriterEnd(),
253+
testWriterFail(),
254+
testCancelWithoutReason(),
255+
testCancelWithReason(),
256+
testCancelWithFalsyReason(),
257+
testFailDetachesConsumers(),
258+
testWriterFailIdempotent(),
259+
testLateJoinerSeesBufferedData(),
260+
]).then(common.mustCall());
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Commit 14c5473
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jasnelladuh95
jasnell
authored and
aduh95
committed
test: add tests for experimental stream/iter implementation
Signed-off-by: James M Snell <jasnell@gmail.com>
Assisted-By: Claude/Opus 4.6
PR-URL: #62066
Backport-PR-URL: #64675
Reviewed-By: Robert Nagy <ronagy@icloud.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
1 parent 28dc85d commit 14c5473
39 files changed
Lines changed: 8924 additions & 0 deletions
‎test/parallel/test-fs-promises-file-handle-pull.js‎
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‎test/parallel/test-fs-promises-file-handle-pullsync.js‎
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‎test/parallel/test-fs-promises-file-handle-writer.js‎
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‎test/parallel/test-stream-iter-broadcast-backpressure.js‎
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1+
// Flags: --experimental-stream-iter
2+
'use strict';
3+
4+
constcommon=require('../common');
5+
constassert=require('assert');
6+
const{ broadcast, text }=require('stream/iter');
7+
8+
// =============================================================================
9+
// Backpressure policies
10+
// =============================================================================
11+
12+
asyncfunctiontestDropOldest(){
13+
const{ writer,broadcast: bc}=broadcast({
14+
highWaterMark: 2,
15+
backpressure: 'drop-oldest',
16+
});
17+
constconsumer=bc.push();
18+
19+
writer.writeSync('first');
20+
writer.writeSync('second');
21+
// This should drop 'first'
22+
writer.writeSync('third');
23+
writer.endSync();
24+
25+
constdata=awaittext(consumer);
26+
assert.strictEqual(data,'secondthird');
27+
}
28+
29+
asyncfunctiontestDropNewest(){
30+
const{ writer,broadcast: bc}=broadcast({
31+
highWaterMark: 1,
32+
backpressure: 'drop-newest',
33+
});
34+
constconsumer=bc.push();
35+
36+
writer.writeSync('kept');
37+
// This should be silently dropped
38+
writer.writeSync('dropped');
39+
writer.endSync();
40+
41+
constdata=awaittext(consumer);
42+
assert.strictEqual(data,'kept');
43+
}
44+
45+
// =============================================================================
46+
// Block backpressure
47+
// =============================================================================
48+
49+
asyncfunctiontestBlockBackpressure(){
50+
const{ writer,broadcast: bc}=broadcast({
51+
highWaterMark: 1,
52+
backpressure: 'block',
53+
});
54+
constconsumer=bc.push();
55+
writer.writeSync('a');
56+
57+
// Next write should block
58+
letwriteResolved=false;
59+
constwritePromise=writer.write('b').then(()=>{writeResolved=true;});
60+
awaitnewPromise(setImmediate);
61+
assert.strictEqual(writeResolved,false);
62+
63+
// Drain consumer to unblock the pending write
64+
constiter=consumer[Symbol.asyncIterator]();
65+
constfirst=awaititer.next();
66+
assert.strictEqual(first.done,false);
67+
awaitnewPromise(setImmediate);
68+
assert.strictEqual(writeResolved,true);
69+
70+
writer.endSync();
71+
// Drain remaining data and verify completion
72+
constsecond=awaititer.next();
73+
assert.strictEqual(second.done,false);
74+
awaitwritePromise;
75+
}
76+
77+
// Verify block backpressure data flows correctly end-to-end
78+
asyncfunctiontestBlockBackpressureContent(){
79+
const{ writer,broadcast: bc}=broadcast({
80+
highWaterMark: 1,
81+
backpressure: 'block',
82+
});
83+
constconsumer=bc.push();
84+
85+
writer.writeSync('a');
86+
constwritePromise=writer.write('b');
87+
awaitnewPromise(setImmediate);
88+
89+
// Read all and verify content
90+
constiter=consumer[Symbol.asyncIterator]();
91+
constfirst=awaititer.next();
92+
assert.strictEqual(first.done,false);
93+
constfirstStr=newTextDecoder().decode(first.value[0]);
94+
assert.strictEqual(firstStr,'a');
95+
96+
awaitwritePromise;
97+
writer.endSync();
98+
99+
constsecond=awaititer.next();
100+
assert.strictEqual(second.done,false);
101+
constsecondStr=newTextDecoder().decode(second.value[0]);
102+
assert.strictEqual(secondStr,'b');
103+
104+
constdone=awaititer.next();
105+
assert.strictEqual(done.done,true);
106+
}
107+
108+
// Writev async path
109+
asyncfunctiontestWritevAsync(){
110+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
111+
constconsumer=bc.push();
112+
113+
awaitwriter.writev(['hello',' ','world']);
114+
awaitwriter.end();
115+
116+
constdata=awaittext(consumer);
117+
assert.strictEqual(data,'hello world');
118+
}
119+
120+
// endSync returns the total byte count
121+
asyncfunctiontestEndSyncReturnValue(){
122+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
123+
bc.push();// Need a consumer to write to
124+
125+
writer.writeSync('hello');// 5 bytes
126+
writer.writeSync(' world');// 6 bytes
127+
consttotal=writer.endSync();
128+
assert.strictEqual(total,11);
129+
}
130+
131+
Promise.all([
132+
testDropOldest(),
133+
testDropNewest(),
134+
testBlockBackpressure(),
135+
testBlockBackpressureContent(),
136+
testWritevAsync(),
137+
testEndSyncReturnValue(),
138+
]).then(common.mustCall());
‎test/parallel/test-stream-iter-broadcast-basic.js‎
Lines changed: 260 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,260 @@
1+
// Flags: --experimental-stream-iter
2+
'use strict';
3+
4+
constcommon=require('../common');
5+
constassert=require('assert');
6+
const{ broadcast, text }=require('stream/iter');
7+
8+
// =============================================================================
9+
// Basic broadcast
10+
// =============================================================================
11+
12+
asyncfunctiontestBasicBroadcast(){
13+
const{ writer,broadcast: bc}=broadcast();
14+
15+
// Create two consumers
16+
constconsumer1=bc.push();
17+
constconsumer2=bc.push();
18+
19+
assert.strictEqual(bc.consumerCount,2);
20+
21+
awaitwriter.write('hello');
22+
awaitwriter.end();
23+
24+
const[data1,data2]=awaitPromise.all([
25+
text(consumer1),
26+
text(consumer2),
27+
]);
28+
29+
assert.strictEqual(data1,'hello');
30+
assert.strictEqual(data2,'hello');
31+
}
32+
33+
asyncfunctiontestMultipleWrites(){
34+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
35+
36+
constconsumer=bc.push();
37+
38+
awaitwriter.write('a');
39+
awaitwriter.write('b');
40+
awaitwriter.write('c');
41+
awaitwriter.end();
42+
43+
constdata=awaittext(consumer);
44+
assert.strictEqual(data,'abc');
45+
}
46+
47+
asyncfunctiontestConsumerCount(){
48+
const{broadcast: bc}=broadcast();
49+
50+
assert.strictEqual(bc.consumerCount,0);
51+
52+
constc1=bc.push();
53+
assert.strictEqual(bc.consumerCount,1);
54+
55+
bc.push();
56+
assert.strictEqual(bc.consumerCount,2);
57+
58+
bc.cancel();
59+
60+
// After cancel, consumer count drops to 0
61+
assert.strictEqual(bc.consumerCount,0);
62+
63+
// Consumers are detached and yield nothing
64+
constbatches=[];
65+
forawait(constbatchofc1){
66+
batches.push(batch);
67+
}
68+
assert.strictEqual(batches.length,0);
69+
}
70+
71+
// =============================================================================
72+
// Writer methods
73+
// =============================================================================
74+
75+
asyncfunctiontestWriteSync(){
76+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 2});
77+
constconsumer=bc.push();
78+
79+
assert.strictEqual(writer.writeSync('a'),true);
80+
assert.strictEqual(writer.writeSync('b'),true);
81+
// Buffer full (highWaterMark=2, strict policy)
82+
assert.strictEqual(writer.writeSync('c'),false);
83+
84+
writer.endSync();
85+
86+
constdata=awaittext(consumer);
87+
assert.strictEqual(data,'ab');
88+
}
89+
90+
asyncfunctiontestWritevSync(){
91+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
92+
constconsumer=bc.push();
93+
94+
assert.strictEqual(writer.writevSync(['hello',' ','world']),true);
95+
writer.endSync();
96+
97+
constdata=awaittext(consumer);
98+
assert.strictEqual(data,'hello world');
99+
}
100+
101+
asyncfunctiontestWriterEnd(){
102+
const{ writer,broadcast: bc}=broadcast();
103+
constconsumer=bc.push();
104+
105+
awaitwriter.write('data');
106+
consttotalBytes=awaitwriter.end();
107+
assert.strictEqual(totalBytes,4);// 'data' = 4 UTF-8 bytes
108+
109+
constdata=awaittext(consumer);
110+
assert.strictEqual(data,'data');
111+
}
112+
113+
asyncfunctiontestWriterFail(){
114+
const{ writer,broadcast: bc}=broadcast();
115+
constconsumer=bc.push();
116+
117+
writer.fail(newError('test error'));
118+
119+
awaitassert.rejects(
120+
async()=>{
121+
// eslint-disable-next-line no-unused-vars
122+
forawait(const_ofconsumer){
123+
assert.fail('Should not reach here');
124+
}
125+
},
126+
{message: 'test error'},
127+
);
128+
}
129+
130+
// =============================================================================
131+
// Cancel
132+
// =============================================================================
133+
134+
asyncfunctiontestCancelWithoutReason(){
135+
const{broadcast: bc}=broadcast();
136+
constconsumer=bc.push();
137+
138+
bc.cancel();
139+
140+
constbatches=[];
141+
forawait(constbatchofconsumer){
142+
batches.push(batch);
143+
}
144+
assert.strictEqual(batches.length,0);
145+
}
146+
147+
asyncfunctiontestCancelWithReason(){
148+
const{broadcast: bc}=broadcast();
149+
150+
// Start a consumer that is waiting for data (promise pending)
151+
constconsumer=bc.push();
152+
constresultPromise=text(consumer).catch((err)=>err);
153+
154+
// Give the consumer time to enter the waiting state
155+
awaitnewPromise((resolve)=>setImmediate(resolve));
156+
157+
bc.cancel(newError('cancelled'));
158+
159+
constresult=awaitresultPromise;
160+
assert.ok(resultinstanceofError);
161+
assert.strictEqual(result.message,'cancelled');
162+
}
163+
164+
// =============================================================================
165+
// Writer fail detaches consumers
166+
// =============================================================================
167+
168+
asyncfunctiontestFailDetachesConsumers(){
169+
const{ writer,broadcast: bc}=broadcast();
170+
constconsumer1=bc.push();
171+
constconsumer2=bc.push();
172+
173+
assert.strictEqual(bc.consumerCount,2);
174+
175+
// Write some data, then fail the writer
176+
awaitwriter.write('data');
177+
awaitwriter.fail(newError('writer failed'));
178+
179+
// After fail, consumers are detached
180+
assert.strictEqual(bc.consumerCount,0);
181+
182+
// Both consumers should see the error
183+
awaitassert.rejects(
184+
async()=>{
185+
// eslint-disable-next-line no-unused-vars
186+
forawait(const_ofconsumer1){
187+
assert.fail('Should not reach here');
188+
}
189+
},
190+
{message: 'writer failed'},
191+
);
192+
193+
awaitassert.rejects(
194+
async()=>{
195+
// eslint-disable-next-line no-unused-vars
196+
forawait(const_ofconsumer2){
197+
assert.fail('Should not reach here');
198+
}
199+
},
200+
{message: 'writer failed'},
201+
);
202+
}
203+
204+
// =============================================================================
205+
// Writer fail idempotent
206+
// =============================================================================
207+
208+
asyncfunctiontestWriterFailIdempotent(){
209+
const{ writer,broadcast: bc}=broadcast();
210+
constconsumer=bc.push();
211+
writer.writeSync('hello');
212+
writer.fail(newError('fail!'));
213+
// Second call is a no-op (already errored)
214+
writer.fail(newError('fail2'));
215+
awaitassert.rejects(async()=>{
216+
// eslint-disable-next-line no-unused-vars
217+
forawait(const_ofconsumer){/* consume */}
218+
},{message: 'fail!'});
219+
}
220+
221+
// cancel() with falsy reason (0, "", false) should still treat as error
222+
asyncfunctiontestCancelWithFalsyReason(){
223+
const{broadcast: bc}=broadcast();
224+
constconsumer=bc.push();
225+
constresultPromise=text(consumer).catch((err)=>err);
226+
awaitnewPromise((resolve)=>setImmediate(resolve));
227+
bc.cancel(0);
228+
constresult=awaitresultPromise;
229+
assert.strictEqual(result,0);
230+
}
231+
232+
// Late-joining consumer should read from oldest buffered entry
233+
asyncfunctiontestLateJoinerSeesBufferedData(){
234+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 16});
235+
236+
// Write data before any consumer joins
237+
writer.writeSync('before-join');
238+
writer.endSync();
239+
240+
// Consumer joins after data is written
241+
constconsumer=bc.push();
242+
constresult=awaittext(consumer);
243+
assert.strictEqual(result,'before-join');
244+
}
245+
246+
Promise.all([
247+
testBasicBroadcast(),
248+
testMultipleWrites(),
249+
testConsumerCount(),
250+
testWriteSync(),
251+
testWritevSync(),
252+
testWriterEnd(),
253+
testWriterFail(),
254+
testCancelWithoutReason(),
255+
testCancelWithReason(),
256+
testCancelWithFalsyReason(),
257+
testFailDetachesConsumers(),
258+
testWriterFailIdempotent(),
259+
testLateJoinerSeesBufferedData(),
260+
]).then(common.mustCall());
0 commit comments
Comments
 (0)

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Commit 14c5473
Browse files
jasnelladuh95
jasnell
authored and
aduh95
committed
test: add tests for experimental stream/iter implementation
Signed-off-by: James M Snell <jasnell@gmail.com>
Assisted-By: Claude/Opus 4.6
PR-URL: #62066
Backport-PR-URL: #64675
Reviewed-By: Robert Nagy <ronagy@icloud.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
1 parent 28dc85d commit 14c5473
39 files changed
Lines changed: 8924 additions & 0 deletions
‎test/parallel/test-fs-promises-file-handle-pull.js‎
Lines changed: 440 additions & 0 deletions
Large diffs are not rendered by default.
‎test/parallel/test-fs-promises-file-handle-pullsync.js‎
Lines changed: 498 additions & 0 deletions
Large diffs are not rendered by default.
‎test/parallel/test-fs-promises-file-handle-writer.js‎
Lines changed: 1126 additions & 0 deletions
Large diffs are not rendered by default.
‎test/parallel/test-stream-iter-broadcast-backpressure.js‎
Lines changed: 138 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,138 @@
1+
// Flags: --experimental-stream-iter
2+
'use strict';
3+
4+
constcommon=require('../common');
5+
constassert=require('assert');
6+
const{ broadcast, text }=require('stream/iter');
7+
8+
// =============================================================================
9+
// Backpressure policies
10+
// =============================================================================
11+
12+
asyncfunctiontestDropOldest(){
13+
const{ writer,broadcast: bc}=broadcast({
14+
highWaterMark: 2,
15+
backpressure: 'drop-oldest',
16+
});
17+
constconsumer=bc.push();
18+
19+
writer.writeSync('first');
20+
writer.writeSync('second');
21+
// This should drop 'first'
22+
writer.writeSync('third');
23+
writer.endSync();
24+
25+
constdata=awaittext(consumer);
26+
assert.strictEqual(data,'secondthird');
27+
}
28+
29+
asyncfunctiontestDropNewest(){
30+
const{ writer,broadcast: bc}=broadcast({
31+
highWaterMark: 1,
32+
backpressure: 'drop-newest',
33+
});
34+
constconsumer=bc.push();
35+
36+
writer.writeSync('kept');
37+
// This should be silently dropped
38+
writer.writeSync('dropped');
39+
writer.endSync();
40+
41+
constdata=awaittext(consumer);
42+
assert.strictEqual(data,'kept');
43+
}
44+
45+
// =============================================================================
46+
// Block backpressure
47+
// =============================================================================
48+
49+
asyncfunctiontestBlockBackpressure(){
50+
const{ writer,broadcast: bc}=broadcast({
51+
highWaterMark: 1,
52+
backpressure: 'block',
53+
});
54+
constconsumer=bc.push();
55+
writer.writeSync('a');
56+
57+
// Next write should block
58+
letwriteResolved=false;
59+
constwritePromise=writer.write('b').then(()=>{writeResolved=true;});
60+
awaitnewPromise(setImmediate);
61+
assert.strictEqual(writeResolved,false);
62+
63+
// Drain consumer to unblock the pending write
64+
constiter=consumer[Symbol.asyncIterator]();
65+
constfirst=awaititer.next();
66+
assert.strictEqual(first.done,false);
67+
awaitnewPromise(setImmediate);
68+
assert.strictEqual(writeResolved,true);
69+
70+
writer.endSync();
71+
// Drain remaining data and verify completion
72+
constsecond=awaititer.next();
73+
assert.strictEqual(second.done,false);
74+
awaitwritePromise;
75+
}
76+
77+
// Verify block backpressure data flows correctly end-to-end
78+
asyncfunctiontestBlockBackpressureContent(){
79+
const{ writer,broadcast: bc}=broadcast({
80+
highWaterMark: 1,
81+
backpressure: 'block',
82+
});
83+
constconsumer=bc.push();
84+
85+
writer.writeSync('a');
86+
constwritePromise=writer.write('b');
87+
awaitnewPromise(setImmediate);
88+
89+
// Read all and verify content
90+
constiter=consumer[Symbol.asyncIterator]();
91+
constfirst=awaititer.next();
92+
assert.strictEqual(first.done,false);
93+
constfirstStr=newTextDecoder().decode(first.value[0]);
94+
assert.strictEqual(firstStr,'a');
95+
96+
awaitwritePromise;
97+
writer.endSync();
98+
99+
constsecond=awaititer.next();
100+
assert.strictEqual(second.done,false);
101+
constsecondStr=newTextDecoder().decode(second.value[0]);
102+
assert.strictEqual(secondStr,'b');
103+
104+
constdone=awaititer.next();
105+
assert.strictEqual(done.done,true);
106+
}
107+
108+
// Writev async path
109+
asyncfunctiontestWritevAsync(){
110+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
111+
constconsumer=bc.push();
112+
113+
awaitwriter.writev(['hello',' ','world']);
114+
awaitwriter.end();
115+
116+
constdata=awaittext(consumer);
117+
assert.strictEqual(data,'hello world');
118+
}
119+
120+
// endSync returns the total byte count
121+
asyncfunctiontestEndSyncReturnValue(){
122+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
123+
bc.push();// Need a consumer to write to
124+
125+
writer.writeSync('hello');// 5 bytes
126+
writer.writeSync(' world');// 6 bytes
127+
consttotal=writer.endSync();
128+
assert.strictEqual(total,11);
129+
}
130+
131+
Promise.all([
132+
testDropOldest(),
133+
testDropNewest(),
134+
testBlockBackpressure(),
135+
testBlockBackpressureContent(),
136+
testWritevAsync(),
137+
testEndSyncReturnValue(),
138+
]).then(common.mustCall());
‎test/parallel/test-stream-iter-broadcast-basic.js‎
Lines changed: 260 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,260 @@
1+
// Flags: --experimental-stream-iter
2+
'use strict';
3+
4+
constcommon=require('../common');
5+
constassert=require('assert');
6+
const{ broadcast, text }=require('stream/iter');
7+
8+
// =============================================================================
9+
// Basic broadcast
10+
// =============================================================================
11+
12+
asyncfunctiontestBasicBroadcast(){
13+
const{ writer,broadcast: bc}=broadcast();
14+
15+
// Create two consumers
16+
constconsumer1=bc.push();
17+
constconsumer2=bc.push();
18+
19+
assert.strictEqual(bc.consumerCount,2);
20+
21+
awaitwriter.write('hello');
22+
awaitwriter.end();
23+
24+
const[data1,data2]=awaitPromise.all([
25+
text(consumer1),
26+
text(consumer2),
27+
]);
28+
29+
assert.strictEqual(data1,'hello');
30+
assert.strictEqual(data2,'hello');
31+
}
32+
33+
asyncfunctiontestMultipleWrites(){
34+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
35+
36+
constconsumer=bc.push();
37+
38+
awaitwriter.write('a');
39+
awaitwriter.write('b');
40+
awaitwriter.write('c');
41+
awaitwriter.end();
42+
43+
constdata=awaittext(consumer);
44+
assert.strictEqual(data,'abc');
45+
}
46+
47+
asyncfunctiontestConsumerCount(){
48+
const{broadcast: bc}=broadcast();
49+
50+
assert.strictEqual(bc.consumerCount,0);
51+
52+
constc1=bc.push();
53+
assert.strictEqual(bc.consumerCount,1);
54+
55+
bc.push();
56+
assert.strictEqual(bc.consumerCount,2);
57+
58+
bc.cancel();
59+
60+
// After cancel, consumer count drops to 0
61+
assert.strictEqual(bc.consumerCount,0);
62+
63+
// Consumers are detached and yield nothing
64+
constbatches=[];
65+
forawait(constbatchofc1){
66+
batches.push(batch);
67+
}
68+
assert.strictEqual(batches.length,0);
69+
}
70+
71+
// =============================================================================
72+
// Writer methods
73+
// =============================================================================
74+
75+
asyncfunctiontestWriteSync(){
76+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 2});
77+
constconsumer=bc.push();
78+
79+
assert.strictEqual(writer.writeSync('a'),true);
80+
assert.strictEqual(writer.writeSync('b'),true);
81+
// Buffer full (highWaterMark=2, strict policy)
82+
assert.strictEqual(writer.writeSync('c'),false);
83+
84+
writer.endSync();
85+
86+
constdata=awaittext(consumer);
87+
assert.strictEqual(data,'ab');
88+
}
89+
90+
asyncfunctiontestWritevSync(){
91+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
92+
constconsumer=bc.push();
93+
94+
assert.strictEqual(writer.writevSync(['hello',' ','world']),true);
95+
writer.endSync();
96+
97+
constdata=awaittext(consumer);
98+
assert.strictEqual(data,'hello world');
99+
}
100+
101+
asyncfunctiontestWriterEnd(){
102+
const{ writer,broadcast: bc}=broadcast();
103+
constconsumer=bc.push();
104+
105+
awaitwriter.write('data');
106+
consttotalBytes=awaitwriter.end();
107+
assert.strictEqual(totalBytes,4);// 'data' = 4 UTF-8 bytes
108+
109+
constdata=awaittext(consumer);
110+
assert.strictEqual(data,'data');
111+
}
112+
113+
asyncfunctiontestWriterFail(){
114+
const{ writer,broadcast: bc}=broadcast();
115+
constconsumer=bc.push();
116+
117+
writer.fail(newError('test error'));
118+
119+
awaitassert.rejects(
120+
async()=>{
121+
// eslint-disable-next-line no-unused-vars
122+
forawait(const_ofconsumer){
123+
assert.fail('Should not reach here');
124+
}
125+
},
126+
{message: 'test error'},
127+
);
128+
}
129+
130+
// =============================================================================
131+
// Cancel
132+
// =============================================================================
133+
134+
asyncfunctiontestCancelWithoutReason(){
135+
const{broadcast: bc}=broadcast();
136+
constconsumer=bc.push();
137+
138+
bc.cancel();
139+
140+
constbatches=[];
141+
forawait(constbatchofconsumer){
142+
batches.push(batch);
143+
}
144+
assert.strictEqual(batches.length,0);
145+
}
146+
147+
asyncfunctiontestCancelWithReason(){
148+
const{broadcast: bc}=broadcast();
149+
150+
// Start a consumer that is waiting for data (promise pending)
151+
constconsumer=bc.push();
152+
constresultPromise=text(consumer).catch((err)=>err);
153+
154+
// Give the consumer time to enter the waiting state
155+
awaitnewPromise((resolve)=>setImmediate(resolve));
156+
157+
bc.cancel(newError('cancelled'));
158+
159+
constresult=awaitresultPromise;
160+
assert.ok(resultinstanceofError);
161+
assert.strictEqual(result.message,'cancelled');
162+
}
163+
164+
// =============================================================================
165+
// Writer fail detaches consumers
166+
// =============================================================================
167+
168+
asyncfunctiontestFailDetachesConsumers(){
169+
const{ writer,broadcast: bc}=broadcast();
170+
constconsumer1=bc.push();
171+
constconsumer2=bc.push();
172+
173+
assert.strictEqual(bc.consumerCount,2);
174+
175+
// Write some data, then fail the writer
176+
awaitwriter.write('data');
177+
awaitwriter.fail(newError('writer failed'));
178+
179+
// After fail, consumers are detached
180+
assert.strictEqual(bc.consumerCount,0);
181+
182+
// Both consumers should see the error
183+
awaitassert.rejects(
184+
async()=>{
185+
// eslint-disable-next-line no-unused-vars
186+
forawait(const_ofconsumer1){
187+
assert.fail('Should not reach here');
188+
}
189+
},
190+
{message: 'writer failed'},
191+
);
192+
193+
awaitassert.rejects(
194+
async()=>{
195+
// eslint-disable-next-line no-unused-vars
196+
forawait(const_ofconsumer2){
197+
assert.fail('Should not reach here');
198+
}
199+
},
200+
{message: 'writer failed'},
201+
);
202+
}
203+
204+
// =============================================================================
205+
// Writer fail idempotent
206+
// =============================================================================
207+
208+
asyncfunctiontestWriterFailIdempotent(){
209+
const{ writer,broadcast: bc}=broadcast();
210+
constconsumer=bc.push();
211+
writer.writeSync('hello');
212+
writer.fail(newError('fail!'));
213+
// Second call is a no-op (already errored)
214+
writer.fail(newError('fail2'));
215+
awaitassert.rejects(async()=>{
216+
// eslint-disable-next-line no-unused-vars
217+
forawait(const_ofconsumer){/* consume */}
218+
},{message: 'fail!'});
219+
}
220+
221+
// cancel() with falsy reason (0, "", false) should still treat as error
222+
asyncfunctiontestCancelWithFalsyReason(){
223+
const{broadcast: bc}=broadcast();
224+
constconsumer=bc.push();
225+
constresultPromise=text(consumer).catch((err)=>err);
226+
awaitnewPromise((resolve)=>setImmediate(resolve));
227+
bc.cancel(0);
228+
constresult=awaitresultPromise;
229+
assert.strictEqual(result,0);
230+
}
231+
232+
// Late-joining consumer should read from oldest buffered entry
233+
asyncfunctiontestLateJoinerSeesBufferedData(){
234+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 16});
235+
236+
// Write data before any consumer joins
237+
writer.writeSync('before-join');
238+
writer.endSync();
239+
240+
// Consumer joins after data is written
241+
constconsumer=bc.push();
242+
constresult=awaittext(consumer);
243+
assert.strictEqual(result,'before-join');
244+
}
245+
246+
Promise.all([
247+
testBasicBroadcast(),
248+
testMultipleWrites(),
249+
testConsumerCount(),
250+
testWriteSync(),
251+
testWritevSync(),
252+
testWriterEnd(),
253+
testWriterFail(),
254+
testCancelWithoutReason(),
255+
testCancelWithReason(),
256+
testCancelWithFalsyReason(),
257+
testFailDetachesConsumers(),
258+
testWriterFailIdempotent(),
259+
testLateJoinerSeesBufferedData(),
260+
]).then(common.mustCall());
0 commit comments
Comments
 (0)

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
Commit 14c5473
Browse files
jasnelladuh95
jasnell
authored and
aduh95
committed
test: add tests for experimental stream/iter implementation
Signed-off-by: James M Snell <jasnell@gmail.com>
Assisted-By: Claude/Opus 4.6
PR-URL: #62066
Backport-PR-URL: #64675
Reviewed-By: Robert Nagy <ronagy@icloud.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
1 parent 28dc85d commit 14c5473
39 files changed
Lines changed: 8924 additions & 0 deletions
‎test/parallel/test-fs-promises-file-handle-pull.js‎
Lines changed: 440 additions & 0 deletions
Large diffs are not rendered by default.
‎test/parallel/test-fs-promises-file-handle-pullsync.js‎
Lines changed: 498 additions & 0 deletions
Large diffs are not rendered by default.
‎test/parallel/test-fs-promises-file-handle-writer.js‎
Lines changed: 1126 additions & 0 deletions
Large diffs are not rendered by default.
‎test/parallel/test-stream-iter-broadcast-backpressure.js‎
Lines changed: 138 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,138 @@
1+
// Flags: --experimental-stream-iter
2+
'use strict';
3+
4+
constcommon=require('../common');
5+
constassert=require('assert');
6+
const{ broadcast, text }=require('stream/iter');
7+
8+
// =============================================================================
9+
// Backpressure policies
10+
// =============================================================================
11+
12+
asyncfunctiontestDropOldest(){
13+
const{ writer,broadcast: bc}=broadcast({
14+
highWaterMark: 2,
15+
backpressure: 'drop-oldest',
16+
});
17+
constconsumer=bc.push();
18+
19+
writer.writeSync('first');
20+
writer.writeSync('second');
21+
// This should drop 'first'
22+
writer.writeSync('third');
23+
writer.endSync();
24+
25+
constdata=awaittext(consumer);
26+
assert.strictEqual(data,'secondthird');
27+
}
28+
29+
asyncfunctiontestDropNewest(){
30+
const{ writer,broadcast: bc}=broadcast({
31+
highWaterMark: 1,
32+
backpressure: 'drop-newest',
33+
});
34+
constconsumer=bc.push();
35+
36+
writer.writeSync('kept');
37+
// This should be silently dropped
38+
writer.writeSync('dropped');
39+
writer.endSync();
40+
41+
constdata=awaittext(consumer);
42+
assert.strictEqual(data,'kept');
43+
}
44+
45+
// =============================================================================
46+
// Block backpressure
47+
// =============================================================================
48+
49+
asyncfunctiontestBlockBackpressure(){
50+
const{ writer,broadcast: bc}=broadcast({
51+
highWaterMark: 1,
52+
backpressure: 'block',
53+
});
54+
constconsumer=bc.push();
55+
writer.writeSync('a');
56+
57+
// Next write should block
58+
letwriteResolved=false;
59+
constwritePromise=writer.write('b').then(()=>{writeResolved=true;});
60+
awaitnewPromise(setImmediate);
61+
assert.strictEqual(writeResolved,false);
62+
63+
// Drain consumer to unblock the pending write
64+
constiter=consumer[Symbol.asyncIterator]();
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constfirst=awaititer.next();
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assert.strictEqual(first.done,false);
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awaitnewPromise(setImmediate);
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assert.strictEqual(writeResolved,true);
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writer.endSync();
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// Drain remaining data and verify completion
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constsecond=awaititer.next();
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assert.strictEqual(second.done,false);
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awaitwritePromise;
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}
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// Verify block backpressure data flows correctly end-to-end
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asyncfunctiontestBlockBackpressureContent(){
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const{ writer,broadcast: bc}=broadcast({
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highWaterMark: 1,
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backpressure: 'block',
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});
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constconsumer=bc.push();
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writer.writeSync('a');
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constwritePromise=writer.write('b');
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awaitnewPromise(setImmediate);
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// Read all and verify content
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constiter=consumer[Symbol.asyncIterator]();
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constfirst=awaititer.next();
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assert.strictEqual(first.done,false);
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constfirstStr=newTextDecoder().decode(first.value[0]);
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assert.strictEqual(firstStr,'a');
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awaitwritePromise;
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writer.endSync();
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constsecond=awaititer.next();
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assert.strictEqual(second.done,false);
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constsecondStr=newTextDecoder().decode(second.value[0]);
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assert.strictEqual(secondStr,'b');
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constdone=awaititer.next();
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assert.strictEqual(done.done,true);
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}
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// Writev async path
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asyncfunctiontestWritevAsync(){
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const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
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constconsumer=bc.push();
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awaitwriter.writev(['hello',' ','world']);
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awaitwriter.end();
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constdata=awaittext(consumer);
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assert.strictEqual(data,'hello world');
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}
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// endSync returns the total byte count
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asyncfunctiontestEndSyncReturnValue(){
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const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
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bc.push();// Need a consumer to write to
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writer.writeSync('hello');// 5 bytes
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writer.writeSync(' world');// 6 bytes
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consttotal=writer.endSync();
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assert.strictEqual(total,11);
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}
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Promise.all([
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testDropOldest(),
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testDropNewest(),
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testBlockBackpressure(),
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testBlockBackpressureContent(),
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testWritevAsync(),
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testEndSyncReturnValue(),
138+
]).then(common.mustCall());
‎test/parallel/test-stream-iter-broadcast-basic.js‎
Lines changed: 260 additions & 0 deletions
Original file line numberDiff line numberDiff line change
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1+
// Flags: --experimental-stream-iter
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'use strict';
3+
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constcommon=require('../common');
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constassert=require('assert');
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const{ broadcast, text }=require('stream/iter');
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// =============================================================================
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// Basic broadcast
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// =============================================================================
11+
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asyncfunctiontestBasicBroadcast(){
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const{ writer,broadcast: bc}=broadcast();
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// Create two consumers
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constconsumer1=bc.push();
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constconsumer2=bc.push();
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assert.strictEqual(bc.consumerCount,2);
20+
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awaitwriter.write('hello');
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awaitwriter.end();
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const[data1,data2]=awaitPromise.all([
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text(consumer1),
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text(consumer2),
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]);
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assert.strictEqual(data1,'hello');
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assert.strictEqual(data2,'hello');
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}
32+
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asyncfunctiontestMultipleWrites(){
34+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
35+
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constconsumer=bc.push();
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awaitwriter.write('a');
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awaitwriter.write('b');
40+
awaitwriter.write('c');
41+
awaitwriter.end();
42+
43+
constdata=awaittext(consumer);
44+
assert.strictEqual(data,'abc');
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}
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asyncfunctiontestConsumerCount(){
48+
const{broadcast: bc}=broadcast();
49+
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assert.strictEqual(bc.consumerCount,0);
51+
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constc1=bc.push();
53+
assert.strictEqual(bc.consumerCount,1);
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bc.push();
56+
assert.strictEqual(bc.consumerCount,2);
57+
58+
bc.cancel();
59+
60+
// After cancel, consumer count drops to 0
61+
assert.strictEqual(bc.consumerCount,0);
62+
63+
// Consumers are detached and yield nothing
64+
constbatches=[];
65+
forawait(constbatchofc1){
66+
batches.push(batch);
67+
}
68+
assert.strictEqual(batches.length,0);
69+
}
70+
71+
// =============================================================================
72+
// Writer methods
73+
// =============================================================================
74+
75+
asyncfunctiontestWriteSync(){
76+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 2});
77+
constconsumer=bc.push();
78+
79+
assert.strictEqual(writer.writeSync('a'),true);
80+
assert.strictEqual(writer.writeSync('b'),true);
81+
// Buffer full (highWaterMark=2, strict policy)
82+
assert.strictEqual(writer.writeSync('c'),false);
83+
84+
writer.endSync();
85+
86+
constdata=awaittext(consumer);
87+
assert.strictEqual(data,'ab');
88+
}
89+
90+
asyncfunctiontestWritevSync(){
91+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 10});
92+
constconsumer=bc.push();
93+
94+
assert.strictEqual(writer.writevSync(['hello',' ','world']),true);
95+
writer.endSync();
96+
97+
constdata=awaittext(consumer);
98+
assert.strictEqual(data,'hello world');
99+
}
100+
101+
asyncfunctiontestWriterEnd(){
102+
const{ writer,broadcast: bc}=broadcast();
103+
constconsumer=bc.push();
104+
105+
awaitwriter.write('data');
106+
consttotalBytes=awaitwriter.end();
107+
assert.strictEqual(totalBytes,4);// 'data' = 4 UTF-8 bytes
108+
109+
constdata=awaittext(consumer);
110+
assert.strictEqual(data,'data');
111+
}
112+
113+
asyncfunctiontestWriterFail(){
114+
const{ writer,broadcast: bc}=broadcast();
115+
constconsumer=bc.push();
116+
117+
writer.fail(newError('test error'));
118+
119+
awaitassert.rejects(
120+
async()=>{
121+
// eslint-disable-next-line no-unused-vars
122+
forawait(const_ofconsumer){
123+
assert.fail('Should not reach here');
124+
}
125+
},
126+
{message: 'test error'},
127+
);
128+
}
129+
130+
// =============================================================================
131+
// Cancel
132+
// =============================================================================
133+
134+
asyncfunctiontestCancelWithoutReason(){
135+
const{broadcast: bc}=broadcast();
136+
constconsumer=bc.push();
137+
138+
bc.cancel();
139+
140+
constbatches=[];
141+
forawait(constbatchofconsumer){
142+
batches.push(batch);
143+
}
144+
assert.strictEqual(batches.length,0);
145+
}
146+
147+
asyncfunctiontestCancelWithReason(){
148+
const{broadcast: bc}=broadcast();
149+
150+
// Start a consumer that is waiting for data (promise pending)
151+
constconsumer=bc.push();
152+
constresultPromise=text(consumer).catch((err)=>err);
153+
154+
// Give the consumer time to enter the waiting state
155+
awaitnewPromise((resolve)=>setImmediate(resolve));
156+
157+
bc.cancel(newError('cancelled'));
158+
159+
constresult=awaitresultPromise;
160+
assert.ok(resultinstanceofError);
161+
assert.strictEqual(result.message,'cancelled');
162+
}
163+
164+
// =============================================================================
165+
// Writer fail detaches consumers
166+
// =============================================================================
167+
168+
asyncfunctiontestFailDetachesConsumers(){
169+
const{ writer,broadcast: bc}=broadcast();
170+
constconsumer1=bc.push();
171+
constconsumer2=bc.push();
172+
173+
assert.strictEqual(bc.consumerCount,2);
174+
175+
// Write some data, then fail the writer
176+
awaitwriter.write('data');
177+
awaitwriter.fail(newError('writer failed'));
178+
179+
// After fail, consumers are detached
180+
assert.strictEqual(bc.consumerCount,0);
181+
182+
// Both consumers should see the error
183+
awaitassert.rejects(
184+
async()=>{
185+
// eslint-disable-next-line no-unused-vars
186+
forawait(const_ofconsumer1){
187+
assert.fail('Should not reach here');
188+
}
189+
},
190+
{message: 'writer failed'},
191+
);
192+
193+
awaitassert.rejects(
194+
async()=>{
195+
// eslint-disable-next-line no-unused-vars
196+
forawait(const_ofconsumer2){
197+
assert.fail('Should not reach here');
198+
}
199+
},
200+
{message: 'writer failed'},
201+
);
202+
}
203+
204+
// =============================================================================
205+
// Writer fail idempotent
206+
// =============================================================================
207+
208+
asyncfunctiontestWriterFailIdempotent(){
209+
const{ writer,broadcast: bc}=broadcast();
210+
constconsumer=bc.push();
211+
writer.writeSync('hello');
212+
writer.fail(newError('fail!'));
213+
// Second call is a no-op (already errored)
214+
writer.fail(newError('fail2'));
215+
awaitassert.rejects(async()=>{
216+
// eslint-disable-next-line no-unused-vars
217+
forawait(const_ofconsumer){/* consume */}
218+
},{message: 'fail!'});
219+
}
220+
221+
// cancel() with falsy reason (0, "", false) should still treat as error
222+
asyncfunctiontestCancelWithFalsyReason(){
223+
const{broadcast: bc}=broadcast();
224+
constconsumer=bc.push();
225+
constresultPromise=text(consumer).catch((err)=>err);
226+
awaitnewPromise((resolve)=>setImmediate(resolve));
227+
bc.cancel(0);
228+
constresult=awaitresultPromise;
229+
assert.strictEqual(result,0);
230+
}
231+
232+
// Late-joining consumer should read from oldest buffered entry
233+
asyncfunctiontestLateJoinerSeesBufferedData(){
234+
const{ writer,broadcast: bc}=broadcast({highWaterMark: 16});
235+
236+
// Write data before any consumer joins
237+
writer.writeSync('before-join');
238+
writer.endSync();
239+
240+
// Consumer joins after data is written
241+
constconsumer=bc.push();
242+
constresult=awaittext(consumer);
243+
assert.strictEqual(result,'before-join');
244+
}
245+
246+
Promise.all([
247+
testBasicBroadcast(),
248+
testMultipleWrites(),
249+
testConsumerCount(),
250+
testWriteSync(),
251+
testWritevSync(),
252+
testWriterEnd(),
253+
testWriterFail(),
254+
testCancelWithoutReason(),
255+
testCancelWithReason(),
256+
testCancelWithFalsyReason(),
257+
testFailDetachesConsumers(),
258+
testWriterFailIdempotent(),
259+
testLateJoinerSeesBufferedData(),
260+
]).then(common.mustCall());
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