test: simplify assert usage in test-stream2-basic

PR-URL: #13146
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

Author: Trott

test/pummel/test-stream2-basic.js

@@ -85,9 +85,6 @@ function run() {
 constfn=next[1];
 console.log('# %s',name);
 fn({
-same: assert.deepStrictEqual,
-ok: assert,
-equal: assert.strictEqual,
 end: function(){
 count--;
 run();
@@ -189,10 +186,10 @@ test('pipe', function(t) {
 w[0].on('write',function(){
 if(--writes===0){
 r.unpipe();
-t.equal(r._readableState.pipes,null);
+assert.strictEqual(r._readableState.pipes,null);
 w[0].end();
 r.pipe(w[1]);
-t.equal(r._readableState.pipes,w[1]);
+assert.strictEqual(r._readableState.pipes,w[1]);
 }
 });
 
@@ -201,17 +198,17 @@ test('pipe', function(t) {
 letended0=false;
 letended1=false;
 w[0].on('end',function(results){
-t.equal(ended0,false);
+assert.strictEqual(ended0,false);
 ended0=true;
 ended++;
 assert.deepStrictEqual(results,expect[0]);
 });
 
 w[1].on('end',function(results){
-t.equal(ended1,false);
+assert.strictEqual(ended1,false);
 ended1=true;
 ended++;
-t.equal(ended,2);
+assert.strictEqual(ended,2);
 assert.deepStrictEqual(results,expect[1]);
 t.end();
 });
@@ -289,7 +286,7 @@ test('multipipe', function(t) {
 
 w[1].on('end',function(results){
 ended++;
-t.equal(ended,2);
+assert.strictEqual(ended,2);
 assert.deepStrictEqual(results,expect[1]);
 t.end();
 });
@@ -441,8 +438,8 @@ test('adding readable triggers data flow', function(t) {
 });
 
 r.on('end',function(){
-t.equal(readCalled,3);
-t.ok(onReadable);
+assert.strictEqual(readCalled,3);
+assert.ok(onReadable);
 t.end();
 });
 });
@@ -451,6 +448,6 @@ test('chainable', function(t) {
 constr=newR();
 r._read=common.mustCall();
 constr2=r.setEncoding('utf8').pause().resume().pause();
-t.equal(r,r2);
+assert.strictEqual(r,r2);
 t.end();
 });