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| author | Ian Lance Taylor <iant@golang.org> | 2019-09-06 18:12:46 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2019-09-06 18:12:46 +0000 |
| commit | aa8901e9bb0399d2c16f988ba2fe46eb0c0c5d13 (patch) | |
| tree | 7e63b06d1eec92beec6997c9d3ab47a5d6a835be /libgo/go/testing/run_example_js.go | |
| parent | 920ea3b8ba3164b61ac9490dfdfceb6936eda6dd (diff) | |
| download | gcc-aa8901e9bb0399d2c16f988ba2fe46eb0c0c5d13.zip gcc-aa8901e9bb0399d2c16f988ba2fe46eb0c0c5d13.tar.gz gcc-aa8901e9bb0399d2c16f988ba2fe46eb0c0c5d13.tar.bz2 | |
libgo: update to Go 1.13beta1 release
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/193497
From-SVN: r275473
Diffstat (limited to 'libgo/go/testing/run_example_js.go')
| -rw-r--r-- | libgo/go/testing/run_example_js.go | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/libgo/go/testing/run_example_js.go b/libgo/go/testing/run_example_js.go new file mode 100644 index 0000000..472e0c5 --- /dev/null +++ b/libgo/go/testing/run_example_js.go @@ -0,0 +1,74 @@ +// 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 + } +} |