v8go/errors_test.go at master · Runscope/v8go · GitHub

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// Copyright 2019 Roger Chapman and the v8go contributors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

package v8go_test

import (
"fmt"
"testing"

	v8 "rogchap.com/v8go"
)

funcTestJSErrorFormat(t*testing.T) {
t.Parallel()
tests:= [...]struct {
namestring
errerror
defaultVerbstring
defaultVerbFlagstring
stringVerbstring
quoteVerbstring
	}{
 {"WithStack", &v8.JSError{Message: "msg", StackTrace: "stack"}, "msg", "stack", "msg", `"msg"`},
 {"WithoutStack", &v8.JSError{Message: "msg"}, "msg", "msg", "msg", `"msg"`},
	}

for_, tt:=rangetests {
tt:=tt
t.Run(tt.name, func(t*testing.T) {
t.Parallel()
ifs:=fmt.Sprintf("%v", tt.err); s!=tt.defaultVerb {
t.Errorf("incorrect format for %%v: %s", s)
 }
ifs:=fmt.Sprintf("%+v", tt.err); s!=tt.defaultVerbFlag {
t.Errorf("incorrect format for %%+v: %s", s)
 }
ifs:=fmt.Sprintf("%s", tt.err); s!=tt.stringVerb {
t.Errorf("incorrect format for %%s: %s", s)
 }
ifs:=fmt.Sprintf("%q", tt.err); s!=tt.quoteVerb {
t.Errorf("incorrect format for %%q: %s", s)
 }
 })
	}
}

funcTestJSErrorOutput(t*testing.T) {
t.Parallel()
ctx:=v8.NewContext(nil)
deferctx.Isolate().Dispose()
deferctx.Close()

math:=`
	function add(a, b) {
 return a + b;
	}

	function addMore(a, b) {
 return add(a, c);
	}`

main:=`
	let a = add(3, 5);
	let b = addMore(a, 6);
	b;
	`

ctx.RunScript(math, "math.js")
_, err:=ctx.RunScript(main, "main.js")
iferr==nil {
t.Error("expected error but got <nil>")
return
	}
e, ok:=err.(*v8.JSError)
if!ok {
t.Errorf("expected error of type JSError, got %T", err)
	}
ife.Message!="ReferenceError: c is not defined" {
t.Errorf("unexpected error message: %q", e.Message)
	}
ife.Location!="math.js:7:17" {
t.Errorf("unexpected error location: %q", e.Location)
	}
expectedStack:=`ReferenceError: c is not defined
 at addMore (math.js:7:17)
 at main.js:3:10`

ife.StackTrace!=expectedStack {
t.Errorf("unexpected error stack trace: %q", e.StackTrace)
	}
}

funcTestJSErrorFormat_forSyntaxError(t*testing.T) {
t.Parallel()
iso:=v8.NewIsolate()
deferiso.Dispose()
ctx:=v8.NewContext(iso)
deferctx.Close()

script:=`
 let x = 1;
 let y = x + ;
 let z = x + z;
	`
_, err:=ctx.RunScript(script, "xyz.js")
jsErr:=err.(*v8.JSError)
ifjsErr.StackTrace!=jsErr.Message {
t.Errorf("unexpected StackTrace %q not equal to Message %q", jsErr.StackTrace, jsErr.Message)
	}
ifjsErr.Location=="" {
t.Errorf("missing Location")
	}

msg:=fmt.Sprintf("%+v", err)
ifmsg!="SyntaxError: Unexpected token ';' (at xyz.js:3:15)" {
t.Errorf("unexpected verbose error message: %q", msg)
	}
}