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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"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"runtime"
"strings"
"testing"
)
func loadSyms(t *testing.T) map[string]string {
cmd := exec.Command("go", "tool", "nm", 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))
}
syms := make(map[string]string)
scanner := bufio.NewScanner(bytes.NewReader(out))
for scanner.Scan() {
f := strings.Fields(scanner.Text())
if len(f) < 3 {
continue
}
syms[f[2]] = f[0]
}
if err := scanner.Err(); err != nil {
t.Fatalf("error reading symbols: %v", err)
}
return syms
}
func runAddr2Line(t *testing.T, exepath, addr string) (funcname, path, lineno string) {
cmd := exec.Command(exepath, os.Args[0])
cmd.Stdin = strings.NewReader(addr)
out, err := cmd.CombinedOutput()
if err != nil {
t.Fatalf("go tool addr2line %v: %v\n%s", os.Args[0], err, string(out))
}
f := strings.Split(string(out), "\n")
if len(f) < 3 && f[2] == "" {
t.Fatal("addr2line output must have 2 lines")
}
funcname = f[0]
pathAndLineNo := f[1]
f = strings.Split(pathAndLineNo, ":")
if runtime.GOOS == "windows" {
switch len(f) {
case 2:
return funcname, f[0], f[1]
case 3:
return funcname, f[0] + ":" + f[1], f[2]
default:
t.Fatalf("no line number found in %q", pathAndLineNo)
}
}
if len(f) != 2 {
t.Fatalf("no line number found in %q", pathAndLineNo)
}
return funcname, f[0], f[1]
}
const symName = "cmd/addr2line.TestAddr2Line"
func testAddr2Line(t *testing.T, exepath, addr string) {
funcName, srcPath, srcLineNo := runAddr2Line(t, exepath, addr)
if symName != funcName {
t.Fatalf("expected function name %v; got %v", symName, funcName)
}
fi1, err := os.Stat("addr2line_test.go")
if err != nil {
t.Fatalf("Stat failed: %v", err)
}
fi2, err := os.Stat(srcPath)
if err != nil {
t.Fatalf("Stat failed: %v", err)
}
if !os.SameFile(fi1, fi2) {
t.Fatalf("addr2line_test.go and %s are not same file", srcPath)
}
if srcLineNo != "94" {
t.Fatalf("line number = %v; want 94", srcLineNo)
}
}
// This is line 93. The test depends on that.
func TestAddr2Line(t *testing.T) {
switch runtime.GOOS {
case "nacl", "android":
t.Skipf("skipping on %s", runtime.GOOS)
}
syms := loadSyms(t)
tmpDir, err := ioutil.TempDir("", "TestAddr2Line")
if err != nil {
t.Fatal("TempDir failed: ", err)
}
defer os.RemoveAll(tmpDir)
exepath := filepath.Join(tmpDir, "testaddr2line.exe")
out, err := exec.Command("go", "build", "-o", exepath, "cmd/addr2line").CombinedOutput()
if err != nil {
t.Fatalf("go build -o %v cmd/addr2line: %v\n%s", exepath, err, string(out))
}
testAddr2Line(t, exepath, syms[symName])
testAddr2Line(t, exepath, "0x"+syms[symName])
}
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