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Name	Size	Permission
internal	[ DIR ]	drwxr-xr-x
iotest	[ DIR ]	drwxr-xr-x
quick	[ DIR ]	drwxr-xr-x
allocs.go	1.36 KB	-rw-r--r--
allocs_test.go	825 B	-rw-r--r--
benchmark.go	22.34 KB	-rw-r--r--
benchmark_test.go	3.94 KB	-rw-r--r--
cover.go	3.26 KB	-rw-r--r--
example.go	2.5 KB	-rw-r--r--
export_test.go	207 B	-rw-r--r--
helper_test.go	1.63 KB	-rw-r--r--
helperfuncs_test.go	1.34 KB	-rw-r--r--
match.go	3.51 KB	-rw-r--r--
match_test.go	5.11 KB	-rw-r--r--
panic_test.go	6.04 KB	-rw-r--r--
run_example.go	1.21 KB	-rw-r--r--
run_example_js.go	1.68 KB	-rw-r--r--
sub_test.go	21.82 KB	-rw-r--r--
testing.go	47.33 KB	-rw-r--r--
testing_test.go	448 B	-rw-r--r--

Code Editor : run_example_js.go

// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// +build js

package testing

import (
	"fmt"
	"io"
	"os"
	"strings"
	"time"
)

// TODO(@musiol, @odeke-em): unify this code back into
// example.go when js/wasm gets an os.Pipe implementation.
func runExample(eg InternalExample) (ok bool) {
	if *chatty {
		fmt.Printf("=== RUN   %s\n", eg.Name)
	}

// Capture stdout to temporary file. We're not using
	// os.Pipe because it is not supported on js/wasm.
	stdout := os.Stdout
	f := createTempFile(eg.Name)
	os.Stdout = f
	start := time.Now()

// Clean up in a deferred call so we can recover if the example panics.
	defer func() {
		timeSpent := time.Since(start)

// Restore stdout, get output and remove temporary file.
		os.Stdout = stdout
		var buf strings.Builder
		_, seekErr := f.Seek(0, os.SEEK_SET)
		_, readErr := io.Copy(&buf, f)
		out := buf.String()
		f.Close()
		os.Remove(f.Name())
		if seekErr != nil {
			fmt.Fprintf(os.Stderr, "testing: seek temp file: %v\n", seekErr)
			os.Exit(1)
		}
		if readErr != nil {
			fmt.Fprintf(os.Stderr, "testing: read temp file: %v\n", readErr)
			os.Exit(1)
		}

err := recover()
		ok = eg.processRunResult(out, timeSpent, err)
	}()

// Run example.
	eg.F()
	return
}

func createTempFile(exampleName string) *os.File {
	for i := 0; ; i++ {
		name := fmt.Sprintf("%s/go-example-stdout-%s-%d.txt", os.TempDir(), exampleName, i)
		f, err := os.OpenFile(name, os.O_RDWR|os.O_CREATE|os.O_EXCL, 0600)
		if err != nil {
			if os.IsExist(err) {
				continue
			}
			fmt.Fprintf(os.Stderr, "testing: open temp file: %v\n", err)
			os.Exit(1)
		}
		return f
	}
}

${this.title}

Code Editor : run_example_js.go