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https://github.com/golang/go
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ad644d2e86
Change-Id: Iadb3c5de8ae9ea45855013997ed70f7929a88661
GitHub-Last-Rev: ae85bcf82b
GitHub-Pull-Request: golang/go#26920
Reviewed-on: https://go-review.googlesource.com/128955
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
66 lines
1.9 KiB
Go
66 lines
1.9 KiB
Go
// run
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// Copyright 2018 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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// Verify the impact of line directives on error positions and position formatting.
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package main
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import (
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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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// Each of these tests is expected to fail (missing package clause)
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// at the position determined by the preceding line directive.
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var tests = []struct {
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src, pos string
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}{
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{"//line :10\n", ":10:"}, // no filename means no filename
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{"//line :10:4\n", "filename:10:4"}, // no filename means use existing filename
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{"//line foo.go:10\n", "foo.go:10:"}, // no column means don't print a column
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{"//line foo.go:10:4\n", "foo.go:10:4:"}, // column means print a column
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{"//line foo.go:10:4\n\n", "foo.go:11:1:"}, // relative columns start at 1 after newline
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{"/*line :10*/", ":10:"},
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{"/*line :10:4*/", "filename:10:4"},
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{"/*line foo.go:10*/", "foo.go:10:"},
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{"/*line foo.go:10:4*/", "foo.go:10:4:"},
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{"/*line foo.go:10:4*/\n", "foo.go:11:1:"},
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}
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func main() {
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if runtime.GOOS == "nacl" || runtime.GOOS == "js" {
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return // can not exec go tool
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}
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f, err := ioutil.TempFile("", "issue22662b.go")
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if err != nil {
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log.Fatal(err)
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}
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f.Close()
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defer os.Remove(f.Name())
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for _, test := range tests {
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if err := ioutil.WriteFile(f.Name(), []byte(test.src), 0660); err != nil {
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log.Fatal(err)
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}
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out, err := exec.Command("go", "tool", "compile", f.Name()).CombinedOutput()
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if err == nil {
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log.Fatalf("expected compiling\n---\n%s\n---\nto fail", test.src)
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}
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errmsg := strings.Replace(string(out), f.Name(), "filename", -1) // use "filename" instead of actual (long) filename
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if !strings.HasPrefix(errmsg, test.pos) {
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log.Fatalf("%q: got %q; want position %q", test.src, errmsg, test.pos)
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}
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}
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}
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