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https://github.com/golang/go
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61 lines
1.1 KiB
Go
61 lines
1.1 KiB
Go
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// run
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// Copyright 2017 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// As of "Mon 6 Nov 2017", run.go doesn't yet have proper
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// column matching so instead match the output manually
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// by exec-ing
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package main
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import (
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"fmt"
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"io/ioutil"
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"log"
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"os"
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"os/exec"
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"runtime"
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"strings"
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)
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func main() {
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if runtime.Compiler != "gc" || runtime.GOOS == "nacl" {
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return
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}
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f, err := ioutil.TempFile("", "issue21317.go")
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if err != nil {
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log.Fatal(err)
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}
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fmt.Fprintf(f, `
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package main
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import "fmt"
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func main() {
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n, err := fmt.Println(1)
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}
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`)
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f.Close()
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defer os.RemoveAll(f.Name())
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// compile and test output
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cmd := exec.Command("go", "tool", "compile", f.Name())
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out, err := cmd.CombinedOutput()
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if err == nil {
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log.Fatalf("expected cmd/compile to fail")
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}
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wantErrs := []string{
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"7:9: n declared and not used",
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"7:12: err declared and not used",
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}
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outStr := string(out)
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for _, want := range wantErrs {
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if !strings.Contains(outStr, want) {
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log.Fatalf("failed to match %q\noutput: %q", want, outStr)
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}
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}
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}
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