mirror of
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110 lines
2.7 KiB
Go
110 lines
2.7 KiB
Go
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// Copyright 2014 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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package main
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import (
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"bufio"
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"bytes"
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"fmt"
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"io/ioutil"
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"os"
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"os/exec"
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"path/filepath"
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"runtime"
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"strconv"
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"strings"
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"testing"
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)
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func loadSyms(t *testing.T) map[string]string {
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cmd := exec.Command("go", "tool", "nm", os.Args[0])
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out, err := cmd.CombinedOutput()
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if err != nil {
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t.Fatalf("go tool nm %v: %v\n%s", os.Args[0], err, string(out))
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}
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syms := make(map[string]string)
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scanner := bufio.NewScanner(bytes.NewReader(out))
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for scanner.Scan() {
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f := strings.Fields(scanner.Text())
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if len(f) < 3 {
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continue
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}
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syms[f[2]] = f[0]
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}
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if err := scanner.Err(); err != nil {
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t.Fatalf("error reading symbols: %v", err)
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}
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return syms
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}
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func runObjDump(t *testing.T, exepath, startaddr string) (path, lineno string) {
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addr, err := strconv.ParseUint(startaddr, 16, 64)
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if err != nil {
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t.Fatalf("invalid start address %v: %v", startaddr, err)
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}
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endaddr := fmt.Sprintf("%x", addr+10)
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cmd := exec.Command(exepath, os.Args[0], "0x"+startaddr, "0x"+endaddr)
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out, err := cmd.CombinedOutput()
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if err != nil {
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t.Fatalf("go tool objdump %v: %v\n%s", os.Args[0], err, string(out))
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}
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f := strings.Split(string(out), "\n")
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if len(f) < 1 {
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t.Fatal("objdump output must have at least one line")
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}
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pathAndLineNo := f[0]
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f = strings.Split(pathAndLineNo, ":")
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if runtime.GOOS == "windows" {
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switch len(f) {
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case 2:
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return f[0], f[1]
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case 3:
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return f[0] + ":" + f[1], f[2]
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default:
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t.Fatalf("no line number found in %q", pathAndLineNo)
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}
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}
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if len(f) != 2 {
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t.Fatalf("no line number found in %q", pathAndLineNo)
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}
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return f[0], f[1]
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}
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// This is line 75. The test depends on that.
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func TestObjDump(t *testing.T) {
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if runtime.GOOS == "plan9" {
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t.Skip("skipping test; see http://golang.org/issue/7947")
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}
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syms := loadSyms(t)
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tmpDir, err := ioutil.TempDir("", "TestObjDump")
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if err != nil {
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t.Fatal("TempDir failed: ", err)
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}
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defer os.RemoveAll(tmpDir)
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exepath := filepath.Join(tmpDir, "testobjdump.exe")
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out, err := exec.Command("go", "build", "-o", exepath, "cmd/objdump").CombinedOutput()
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if err != nil {
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t.Fatalf("go build -o %v cmd/objdump: %v\n%s", exepath, err, string(out))
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}
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srcPath, srcLineNo := runObjDump(t, exepath, syms["cmd/objdump.TestObjDump"])
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fi1, err := os.Stat("objdump_test.go")
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if err != nil {
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t.Fatalf("Stat failed: %v", err)
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}
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fi2, err := os.Stat(srcPath)
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if err != nil {
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t.Fatalf("Stat failed: %v", err)
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}
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if !os.SameFile(fi1, fi2) {
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t.Fatalf("objdump_test.go and %s are not same file", srcPath)
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}
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if srcLineNo != "76" {
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t.Fatalf("line number = %v; want 76", srcLineNo)
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}
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}
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