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// Copyright 2014 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.
package main
import (
"bufio"
"bytes"
"fmt"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"runtime"
"strings"
"testing"
)
var testData uint32
func checkSymbols(t *testing.T, nmoutput []byte) {
var checkSymbolsFound, testDataFound bool
scanner := bufio.NewScanner(bytes.NewBuffer(nmoutput))
for scanner.Scan() {
f := strings.Fields(scanner.Text())
if len(f) < 3 {
continue
}
switch f[2] {
case "cmd/nm.checkSymbols":
checkSymbolsFound = true
addr := "0x" + f[0]
if addr != fmt.Sprintf("%p", checkSymbols) {
t.Errorf("nm shows wrong address %v for checkSymbols (%p)", addr, checkSymbols)
}
case "cmd/nm.testData":
testDataFound = true
addr := "0x" + f[0]
if addr != fmt.Sprintf("%p", &testData) {
t.Errorf("nm shows wrong address %v for testData (%p)", addr, &testData)
}
}
}
if err := scanner.Err(); err != nil {
t.Errorf("error while reading symbols: %v", err)
return
}
if !checkSymbolsFound {
t.Error("nm shows no checkSymbols symbol")
}
if !testDataFound {
t.Error("nm shows no testData symbol")
}
}
func TestNM(t *testing.T) {
switch runtime.GOOS {
case "android", "nacl":
t.Skipf("skipping on %s", runtime.GOOS)
}
tmpDir, err := ioutil.TempDir("", "TestNM")
if err != nil {
t.Fatal("TempDir failed: ", err)
}
defer os.RemoveAll(tmpDir)
testnmpath := filepath.Join(tmpDir, "testnm.exe")
out, err := exec.Command("go", "build", "-o", testnmpath, "cmd/nm").CombinedOutput()
if err != nil {
t.Fatalf("go build -o %v cmd/nm: %v\n%s", testnmpath, err, string(out))
}
testfiles := []string{
"elf/testdata/gcc-386-freebsd-exec",
"elf/testdata/gcc-amd64-linux-exec",
"macho/testdata/gcc-386-darwin-exec",
"macho/testdata/gcc-amd64-darwin-exec",
// "pe/testdata/gcc-amd64-mingw-exec", // no symbols!
"pe/testdata/gcc-386-mingw-exec",
"plan9obj/testdata/amd64-plan9-exec",
"plan9obj/testdata/386-plan9-exec",
}
for _, f := range testfiles {
exepath := filepath.Join(runtime.GOROOT(), "src", "pkg", "debug", f)
cmd := exec.Command(testnmpath, exepath)
out, err := cmd.CombinedOutput()
if err != nil {
t.Errorf("go tool nm %v: %v\n%s", exepath, err, string(out))
}
}
cmd := exec.Command(testnmpath, os.Args[0])
out, err = cmd.CombinedOutput()
if err != nil {
t.Fatalf("go tool nm %v: %v\n%s", os.Args[0], err, string(out))
}
checkSymbols(t, out)
}
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