go go_test 源码
golang go_test 代码
文件路径：/src/cmd/go/go_test.go
// Copyright 2015 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_test
import (
"bytes"
"debug/elf"
"debug/macho"
"debug/pe"
"encoding/binary"
"flag"
"fmt"
"go/format"
"internal/godebug"
"internal/testenv"
"io"
"io/fs"
"log"
"os"
"os/exec"
"path/filepath"
"regexp"
"runtime"
"strconv"
"strings"
"testing"
"time"
"cmd/go/internal/cache"
"cmd/go/internal/cfg"
"cmd/go/internal/robustio"
"cmd/go/internal/search"
"cmd/go/internal/work"
"cmd/internal/sys"
cmdgo "cmd/go"
)
func init() {
// GOVCS defaults to public:git|hg,private:all,
// which breaks many tests here - they can't use non-git, non-hg VCS at all!
// Change to fully permissive.
// The tests of the GOVCS setting itself are in ../../testdata/script/govcs.txt.
os.Setenv("GOVCS", "*:all")
}
var (
canRace = false // whether we can run the race detector
canCgo = false // whether we can use cgo
canMSan = false // whether we can run the memory sanitizer
canASan = false // whether we can run the address sanitizer
canFuzz = false // whether we can search for new fuzz failures
fuzzInstrumented = false // whether fuzzing uses instrumentation
)
var exeSuffix string = func() string {
if runtime.GOOS == "windows" {
return ".exe"
}
return ""
}()
func tooSlow(t *testing.T) {
if testing.Short() {
// In -short mode; skip test, except run it on the {darwin,linux,windows}/amd64 builders.
if testenv.Builder() != "" && runtime.GOARCH == "amd64" && (runtime.GOOS == "linux" || runtime.GOOS == "darwin" || runtime.GOOS == "windows") {
return
}
t.Helper()
t.Skip("skipping test in -short mode")
}
}
// testGOROOT is the GOROOT to use when running testgo, a cmd/go binary
// build from this process's current GOROOT, but run from a different
// (temp) directory.
var testGOROOT string
// testGOROOT_FINAL is the GOROOT_FINAL with which the test binary is assumed to
// have been built.
var testGOROOT_FINAL = os.Getenv("GOROOT_FINAL")
var testGOCACHE string
var testGo string
var testTmpDir string
var testBin string
// The TestMain function creates a go command for testing purposes and
// deletes it after the tests have been run.
func TestMain(m *testing.M) {
// When CMDGO_TEST_RUN_MAIN is set, we're reusing the test binary as cmd/go.
// Enable the special behavior needed in cmd/go/internal/work,
// run the main func exported via export_test.go, and exit.
// We set CMDGO_TEST_RUN_MAIN via os.Setenv and testScript.setup.
if os.Getenv("CMDGO_TEST_RUN_MAIN") != "" {
if v := os.Getenv("TESTGO_VERSION"); v != "" {
work.RuntimeVersion = v
}
if testGOROOT := os.Getenv("TESTGO_GOROOT"); testGOROOT != "" {
// Disallow installs to the GOROOT from which testgo was built.
// Installs to other GOROOTs — such as one set explicitly within a test — are ok.
work.AllowInstall = func(a *work.Action) error {
if cfg.BuildN {
return nil
}
rel := search.InDir(a.Target, testGOROOT)
if rel == "" {
return nil
}
callerPos := ""
if _, file, line, ok := runtime.Caller(1); ok {
if shortFile := search.InDir(file, filepath.Join(testGOROOT, "src")); shortFile != "" {
file = shortFile
}
callerPos = fmt.Sprintf("%s:%d: ", file, line)
}
return fmt.Errorf("%stestgo must not write to GOROOT (installing to %s)", callerPos, filepath.Join("GOROOT", rel))
}
}
cmdgo.Main()
os.Exit(0)
}
os.Setenv("CMDGO_TEST_RUN_MAIN", "true")
// $GO_GCFLAGS a compiler debug flag known to cmd/dist, make.bash, etc.
// It is not a standard go command flag; use os.Getenv, not cfg.Getenv.
if os.Getenv("GO_GCFLAGS") != "" {
fmt.Fprintf(os.Stderr, "testing: warning: no tests to run\n") // magic string for cmd/go
fmt.Printf("cmd/go test is not compatible with $GO_GCFLAGS being set\n")
fmt.Printf("SKIP\n")
return
}
flag.Parse()
if *proxyAddr != "" {
StartProxy()
select {}
}
// Run with a temporary TMPDIR to check that the tests don't
// leave anything behind.
topTmpdir, err := os.MkdirTemp("", "cmd-go-test-")
if err != nil {
log.Fatal(err)
}
if !*testWork {
defer removeAll(topTmpdir)
}
os.Setenv(tempEnvName(), topTmpdir)
dir, err := os.MkdirTemp(topTmpdir, "tmpdir")
if err != nil {
log.Fatal(err)
}
testTmpDir = dir
if !*testWork {
defer removeAll(testTmpDir)
}
testGOCACHE = cache.DefaultDir()
if testenv.HasGoBuild() {
testBin = filepath.Join(testTmpDir, "testbin")
if err := os.Mkdir(testBin, 0777); err != nil {
log.Fatal(err)
}
testGo = filepath.Join(testBin, "go"+exeSuffix)
gotool, err := testenv.GoTool()
if err != nil {
fmt.Fprintln(os.Stderr, "locating go tool: ", err)
os.Exit(2)
}
goEnv := func(name string) string {
out, err := exec.Command(gotool, "env", name).CombinedOutput()
if err != nil {
fmt.Fprintf(os.Stderr, "go env %s: %v\n%s", name, err, out)
os.Exit(2)
}
return strings.TrimSpace(string(out))
}
testGOROOT = goEnv("GOROOT")
os.Setenv("TESTGO_GOROOT", testGOROOT)
// Ensure that GOROOT is set explicitly.
// Otherwise, if the toolchain was built with GOROOT_FINAL set but has not
// yet been moved to its final location, programs that invoke runtime.GOROOT
// may accidentally use the wrong path.
os.Setenv("GOROOT", testGOROOT)
// The whole GOROOT/pkg tree was installed using the GOHOSTOS/GOHOSTARCH
// toolchain (installed in GOROOT/pkg/tool/GOHOSTOS_GOHOSTARCH).
// The testgo.exe we are about to create will be built for GOOS/GOARCH,
// which means it will use the GOOS/GOARCH toolchain
// (installed in GOROOT/pkg/tool/GOOS_GOARCH).
// If these are not the same toolchain, then the entire standard library
// will look out of date (the compilers in those two different tool directories
// are built for different architectures and have different build IDs),
// which will cause many tests to do unnecessary rebuilds and some
// tests to attempt to overwrite the installed standard library.
// Bail out entirely in this case.
hostGOOS := goEnv("GOHOSTOS")
hostGOARCH := goEnv("GOHOSTARCH")
if hostGOOS != runtime.GOOS || hostGOARCH != runtime.GOARCH {
fmt.Fprintf(os.Stderr, "testing: warning: no tests to run\n") // magic string for cmd/go
fmt.Printf("cmd/go test is not compatible with GOOS/GOARCH != GOHOSTOS/GOHOSTARCH (%s/%s != %s/%s)\n", runtime.GOOS, runtime.GOARCH, hostGOOS, hostGOARCH)
fmt.Printf("SKIP\n")
return
}
// Duplicate the test executable into the path at testGo, for $PATH.
// If the OS supports symlinks, use them instead of copying bytes.
testExe, err := os.Executable()
if err != nil {
log.Fatal(err)
}
if err := os.Symlink(testExe, testGo); err != nil {
// Otherwise, copy the bytes.
src, err := os.Open(testExe)
if err != nil {
log.Fatal(err)
}
defer src.Close()
dst, err := os.OpenFile(testGo, os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0o777)
if err != nil {
log.Fatal(err)
}
_, err = io.Copy(dst, src)
if closeErr := dst.Close(); err == nil {
err = closeErr
}
if err != nil {
log.Fatal(err)
}
}
cmd := exec.Command(testGo, "env", "CGO_ENABLED")
cmd.Stderr = new(strings.Builder)
if out, err := cmd.Output(); err != nil {
fmt.Fprintf(os.Stderr, "running testgo failed: %v\n%s", err, cmd.Stderr)
os.Exit(2)
} else {
canCgo, err = strconv.ParseBool(strings.TrimSpace(string(out)))
if err != nil {
fmt.Fprintf(os.Stderr, "can't parse go env CGO_ENABLED output: %v\n", strings.TrimSpace(string(out)))
}
}
out, err := exec.Command(gotool, "env", "GOCACHE").CombinedOutput()
if err != nil {
fmt.Fprintf(os.Stderr, "could not find testing GOCACHE: %v\n%s", err, out)
os.Exit(2)
}
testGOCACHE = strings.TrimSpace(string(out))
canMSan = canCgo && sys.MSanSupported(runtime.GOOS, runtime.GOARCH)
canASan = canCgo && sys.ASanSupported(runtime.GOOS, runtime.GOARCH)
canRace = canCgo && sys.RaceDetectorSupported(runtime.GOOS, runtime.GOARCH)
// The race detector doesn't work on Alpine Linux:
// golang.org/issue/14481
// gccgo does not support the race detector.
if isAlpineLinux() || runtime.Compiler == "gccgo" {
canRace = false
}
canFuzz = sys.FuzzSupported(runtime.GOOS, runtime.GOARCH)
fuzzInstrumented = sys.FuzzInstrumented(runtime.GOOS, runtime.GOARCH)
}
// Don't let these environment variables confuse the test.
os.Setenv("GOENV", "off")
os.Unsetenv("GOFLAGS")
os.Unsetenv("GOBIN")
os.Unsetenv("GOPATH")
os.Unsetenv("GIT_ALLOW_PROTOCOL")
os.Setenv("HOME", "/test-go-home-does-not-exist")
// On some systems the default C compiler is ccache.
// Setting HOME to a non-existent directory will break
// those systems. Disable ccache and use real compiler. Issue 17668.
os.Setenv("CCACHE_DISABLE", "1")
if cfg.Getenv("GOCACHE") == "" {
os.Setenv("GOCACHE", testGOCACHE) // because $HOME is gone
}
if testenv.Builder() != "" || os.Getenv("GIT_TRACE_CURL") == "1" {
// To help diagnose https://go.dev/issue/52545,
// enable tracing for Git HTTPS requests.
os.Setenv("GIT_TRACE_CURL", "1")
os.Setenv("GIT_TRACE_CURL_NO_DATA", "1")
os.Setenv("GIT_REDACT_COOKIES", "o,SSO,GSSO_Uberproxy")
}
r := m.Run()
if !*testWork {
removeAll(testTmpDir) // os.Exit won't run defer
}
if !*testWork {
// There shouldn't be anything left in topTmpdir.
dirf, err := os.Open(topTmpdir)
if err != nil {
log.Fatal(err)
}
names, err := dirf.Readdirnames(0)
if err != nil {
log.Fatal(err)
}
if len(names) > 0 {
log.Fatalf("unexpected files left in tmpdir: %v", names)
}
removeAll(topTmpdir)
}
os.Exit(r)
}
func isAlpineLinux() bool {
if runtime.GOOS != "linux" {
return false
}
fi, err := os.Lstat("/etc/alpine-release")
return err == nil && fi.Mode().IsRegular()
}
// The length of an mtime tick on this system. This is an estimate of
// how long we need to sleep to ensure that the mtime of two files is
// different.
// We used to try to be clever but that didn't always work (see golang.org/issue/12205).
var mtimeTick time.Duration = 1 * time.Second
// Manage a single run of the testgo binary.
type testgoData struct {
t *testing.T
temps []string
env []string
tempdir string
ran bool
inParallel bool
stdout, stderr bytes.Buffer
execDir string // dir for tg.run
}
// skipIfGccgo skips the test if using gccgo.
func skipIfGccgo(t *testing.T, msg string) {
if runtime.Compiler == "gccgo" {
t.Skipf("skipping test not supported on gccgo: %s", msg)
}
}
// testgo sets up for a test that runs testgo.
func testgo(t *testing.T) *testgoData {
t.Helper()
testenv.MustHaveGoBuild(t)
testenv.SkipIfShortAndSlow(t)
return &testgoData{t: t}
}
// must gives a fatal error if err is not nil.
func (tg *testgoData) must(err error) {
tg.t.Helper()
if err != nil {
tg.t.Fatal(err)
}
}
// check gives a test non-fatal error if err is not nil.
func (tg *testgoData) check(err error) {
tg.t.Helper()
if err != nil {
tg.t.Error(err)
}
}
// parallel runs the test in parallel by calling t.Parallel.
func (tg *testgoData) parallel() {
tg.t.Helper()
if tg.ran {
tg.t.Fatal("internal testsuite error: call to parallel after run")
}
for _, e := range tg.env {
if strings.HasPrefix(e, "GOROOT=") || strings.HasPrefix(e, "GOPATH=") || strings.HasPrefix(e, "GOBIN=") {
val := e[strings.Index(e, "=")+1:]
if strings.HasPrefix(val, "testdata") || strings.HasPrefix(val, "./testdata") {
tg.t.Fatalf("internal testsuite error: call to parallel with testdata in environment (%s)", e)
}
}
}
tg.inParallel = true
tg.t.Parallel()
}
// pwd returns the current directory.
func (tg *testgoData) pwd() string {
tg.t.Helper()
wd, err := os.Getwd()
if err != nil {
tg.t.Fatalf("could not get working directory: %v", err)
}
return wd
}
// sleep sleeps for one tick, where a tick is a conservative estimate
// of how long it takes for a file modification to get a different
// mtime.
func (tg *testgoData) sleep() {
time.Sleep(mtimeTick)
}
// setenv sets an environment variable to use when running the test go
// command.
func (tg *testgoData) setenv(name, val string) {
tg.t.Helper()
if tg.inParallel && (name == "GOROOT" || name == "GOPATH" || name == "GOBIN") && (strings.HasPrefix(val, "testdata") || strings.HasPrefix(val, "./testdata")) {
tg.t.Fatalf("internal testsuite error: call to setenv with testdata (%s=%s) after parallel", name, val)
}
tg.unsetenv(name)
tg.env = append(tg.env, name+"="+val)
}
// unsetenv removes an environment variable.
func (tg *testgoData) unsetenv(name string) {
if tg.env == nil {
tg.env = append([]string(nil), os.Environ()...)
tg.env = append(tg.env, "GO111MODULE=off")
}
for i, v := range tg.env {
if strings.HasPrefix(v, name+"=") {
tg.env = append(tg.env[:i], tg.env[i+1:]...)
break
}
}
}
func (tg *testgoData) goTool() string {
return testGo
}
// doRun runs the test go command, recording stdout and stderr and
// returning exit status.
func (tg *testgoData) doRun(args []string) error {
tg.t.Helper()
if tg.inParallel {
for _, arg := range args {
if strings.HasPrefix(arg, "testdata") || strings.HasPrefix(arg, "./testdata") {
tg.t.Fatal("internal testsuite error: parallel run using testdata")
}
}
}
hasGoroot := false
for _, v := range tg.env {
if strings.HasPrefix(v, "GOROOT=") {
hasGoroot = true
break
}
}
prog := tg.goTool()
if !hasGoroot {
tg.setenv("GOROOT", testGOROOT)
}
tg.t.Logf("running testgo %v", args)
cmd := exec.Command(prog, args...)
tg.stdout.Reset()
tg.stderr.Reset()
cmd.Dir = tg.execDir
cmd.Stdout = &tg.stdout
cmd.Stderr = &tg.stderr
cmd.Env = tg.env
status := cmd.Run()
if tg.stdout.Len() > 0 {
tg.t.Log("standard output:")
tg.t.Log(tg.stdout.String())
}
if tg.stderr.Len() > 0 {
tg.t.Log("standard error:")
tg.t.Log(tg.stderr.String())
}
tg.ran = true
return status
}
// run runs the test go command, and expects it to succeed.
func (tg *testgoData) run(args ...string) {
tg.t.Helper()
if status := tg.doRun(args); status != nil {
wd, _ := os.Getwd()
tg.t.Logf("go %v failed unexpectedly in %s: %v", args, wd, status)
tg.t.FailNow()
}
}
// runFail runs the test go command, and expects it to fail.
func (tg *testgoData) runFail(args ...string) {
tg.t.Helper()
if status := tg.doRun(args); status == nil {
tg.t.Fatal("testgo succeeded unexpectedly")
} else {
tg.t.Log("testgo failed as expected:", status)
}
}
// runGit runs a git command, and expects it to succeed.
func (tg *testgoData) runGit(dir string, args ...string) {
tg.t.Helper()
cmd := exec.Command("git", args...)
tg.stdout.Reset()
tg.stderr.Reset()
cmd.Stdout = &tg.stdout
cmd.Stderr = &tg.stderr
cmd.Dir = dir
cmd.Env = tg.env
status := cmd.Run()
if tg.stdout.Len() > 0 {
tg.t.Log("git standard output:")
tg.t.Log(tg.stdout.String())
}
if tg.stderr.Len() > 0 {
tg.t.Log("git standard error:")
tg.t.Log(tg.stderr.String())
}
if status != nil {
tg.t.Logf("git %v failed unexpectedly: %v", args, status)
tg.t.FailNow()
}
}
// getStdout returns standard output of the testgo run as a string.
func (tg *testgoData) getStdout() string {
tg.t.Helper()
if !tg.ran {
tg.t.Fatal("internal testsuite error: stdout called before run")
}
return tg.stdout.String()
}
// getStderr returns standard error of the testgo run as a string.
func (tg *testgoData) getStderr() string {
tg.t.Helper()
if !tg.ran {
tg.t.Fatal("internal testsuite error: stdout called before run")
}
return tg.stderr.String()
}
// doGrepMatch looks for a regular expression in a buffer, and returns
// whether it is found. The regular expression is matched against
// each line separately, as with the grep command.
func (tg *testgoData) doGrepMatch(match string, b *bytes.Buffer) bool {
tg.t.Helper()
if !tg.ran {
tg.t.Fatal("internal testsuite error: grep called before run")
}
re := regexp.MustCompile(match)
for _, ln := range bytes.Split(b.Bytes(), []byte{'\n'}) {
if re.Match(ln) {
return true
}
}
return false
}
// doGrep looks for a regular expression in a buffer and fails if it
// is not found. The name argument is the name of the output we are
// searching, "output" or "error". The msg argument is logged on
// failure.
func (tg *testgoData) doGrep(match string, b *bytes.Buffer, name, msg string) {
tg.t.Helper()
if !tg.doGrepMatch(match, b) {
tg.t.Log(msg)
tg.t.Logf("pattern %v not found in standard %s", match, name)
tg.t.FailNow()
}
}
// grepStdout looks for a regular expression in the test run's
// standard output and fails, logging msg, if it is not found.
func (tg *testgoData) grepStdout(match, msg string) {
tg.t.Helper()
tg.doGrep(match, &tg.stdout, "output", msg)
}
// grepStderr looks for a regular expression in the test run's
// standard error and fails, logging msg, if it is not found.
func (tg *testgoData) grepStderr(match, msg string) {
tg.t.Helper()
tg.doGrep(match, &tg.stderr, "error", msg)
}
// grepBoth looks for a regular expression in the test run's standard
// output or stand error and fails, logging msg, if it is not found.
func (tg *testgoData) grepBoth(match, msg string) {
tg.t.Helper()
if !tg.doGrepMatch(match, &tg.stdout) && !tg.doGrepMatch(match, &tg.stderr) {
tg.t.Log(msg)
tg.t.Logf("pattern %v not found in standard output or standard error", match)
tg.t.FailNow()
}
}
// doGrepNot looks for a regular expression in a buffer and fails if
// it is found. The name and msg arguments are as for doGrep.
func (tg *testgoData) doGrepNot(match string, b *bytes.Buffer, name, msg string) {
tg.t.Helper()
if tg.doGrepMatch(match, b) {
tg.t.Log(msg)
tg.t.Logf("pattern %v found unexpectedly in standard %s", match, name)
tg.t.FailNow()
}
}
// grepStdoutNot looks for a regular expression in the test run's
// standard output and fails, logging msg, if it is found.
func (tg *testgoData) grepStdoutNot(match, msg string) {
tg.t.Helper()
tg.doGrepNot(match, &tg.stdout, "output", msg)
}
// grepStderrNot looks for a regular expression in the test run's
// standard error and fails, logging msg, if it is found.
func (tg *testgoData) grepStderrNot(match, msg string) {
tg.t.Helper()
tg.doGrepNot(match, &tg.stderr, "error", msg)
}
// grepBothNot looks for a regular expression in the test run's
// standard output or standard error and fails, logging msg, if it is
// found.
func (tg *testgoData) grepBothNot(match, msg string) {
tg.t.Helper()
if tg.doGrepMatch(match, &tg.stdout) || tg.doGrepMatch(match, &tg.stderr) {
tg.t.Log(msg)
tg.t.Fatalf("pattern %v found unexpectedly in standard output or standard error", match)
}
}
// doGrepCount counts the number of times a regexp is seen in a buffer.
func (tg *testgoData) doGrepCount(match string, b *bytes.Buffer) int {
tg.t.Helper()
if !tg.ran {
tg.t.Fatal("internal testsuite error: doGrepCount called before run")
}
re := regexp.MustCompile(match)
c := 0
for _, ln := range bytes.Split(b.Bytes(), []byte{'\n'}) {
if re.Match(ln) {
c++
}
}
return c
}
// grepCountBoth returns the number of times a regexp is seen in both
// standard output and standard error.
func (tg *testgoData) grepCountBoth(match string) int {
tg.t.Helper()
return tg.doGrepCount(match, &tg.stdout) + tg.doGrepCount(match, &tg.stderr)
}
// creatingTemp records that the test plans to create a temporary file
// or directory. If the file or directory exists already, it will be
// removed. When the test completes, the file or directory will be
// removed if it exists.
func (tg *testgoData) creatingTemp(path string) {
tg.t.Helper()
if filepath.IsAbs(path) && !strings.HasPrefix(path, tg.tempdir) {
tg.t.Fatalf("internal testsuite error: creatingTemp(%q) with absolute path not in temporary directory", path)
}
tg.must(robustio.RemoveAll(path))
tg.temps = append(tg.temps, path)
}
// makeTempdir makes a temporary directory for a run of testgo. If
// the temporary directory was already created, this does nothing.
func (tg *testgoData) makeTempdir() {
tg.t.Helper()
if tg.tempdir == "" {
var err error
tg.tempdir, err = os.MkdirTemp("", "gotest")
tg.must(err)
}
}
// tempFile adds a temporary file for a run of testgo.
func (tg *testgoData) tempFile(path, contents string) {
tg.t.Helper()
tg.makeTempdir()
tg.must(os.MkdirAll(filepath.Join(tg.tempdir, filepath.Dir(path)), 0755))
bytes := []byte(contents)
if strings.HasSuffix(path, ".go") {
formatted, err := format.Source(bytes)
if err == nil {
bytes = formatted
}
}
tg.must(os.WriteFile(filepath.Join(tg.tempdir, path), bytes, 0644))
}
// tempDir adds a temporary directory for a run of testgo.
func (tg *testgoData) tempDir(path string) {
tg.t.Helper()
tg.makeTempdir()
if err := os.MkdirAll(filepath.Join(tg.tempdir, path), 0755); err != nil && !os.IsExist(err) {
tg.t.Fatal(err)
}
}
// path returns the absolute pathname to file with the temporary
// directory.
func (tg *testgoData) path(name string) string {
tg.t.Helper()
if tg.tempdir == "" {
tg.t.Fatalf("internal testsuite error: path(%q) with no tempdir", name)
}
if name == "." {
return tg.tempdir
}
return filepath.Join(tg.tempdir, name)
}
// mustExist fails if path does not exist.
func (tg *testgoData) mustExist(path string) {
tg.t.Helper()
if _, err := os.Stat(path); err != nil {
if os.IsNotExist(err) {
tg.t.Fatalf("%s does not exist but should", path)
}
tg.t.Fatalf("%s stat failed: %v", path, err)
}
}
// mustNotExist fails if path exists.
func (tg *testgoData) mustNotExist(path string) {
tg.t.Helper()
if _, err := os.Stat(path); err == nil || !os.IsNotExist(err) {
tg.t.Fatalf("%s exists but should not (%v)", path, err)
}
}
// mustHaveContent succeeds if filePath is a path to a file,
// and that file is readable and not empty.
func (tg *testgoData) mustHaveContent(filePath string) {
tg.mustExist(filePath)
f, err := os.Stat(filePath)
if err != nil {
tg.t.Fatal(err)
}
if f.Size() == 0 {
tg.t.Fatalf("expected %s to have data, but is empty", filePath)
}
}
// wantExecutable fails with msg if path is not executable.
func (tg *testgoData) wantExecutable(path, msg string) {
tg.t.Helper()
if st, err := os.Stat(path); err != nil {
if !os.IsNotExist(err) {
tg.t.Log(err)
}
tg.t.Fatal(msg)
} else {
if runtime.GOOS != "windows" && st.Mode()&0111 == 0 {
tg.t.Fatalf("binary %s exists but is not executable", path)
}
}
}
// isStale reports whether pkg is stale, and why
func (tg *testgoData) isStale(pkg string) (bool, string) {
tg.t.Helper()
tg.run("list", "-f", "{{.Stale}}:{{.StaleReason}}", pkg)
v := strings.TrimSpace(tg.getStdout())
f := strings.SplitN(v, ":", 2)
if len(f) == 2 {
switch f[0] {
case "true":
return true, f[1]
case "false":
return false, f[1]
}
}
tg.t.Fatalf("unexpected output checking staleness of package %v: %v", pkg, v)
panic("unreachable")
}
// wantStale fails with msg if pkg is not stale.
func (tg *testgoData) wantStale(pkg, reason, msg string) {
tg.t.Helper()
stale, why := tg.isStale(pkg)
if !stale {
tg.t.Fatal(msg)
}
// We always accept the reason as being "not installed but
// available in build cache", because when that is the case go
// list doesn't try to sort out the underlying reason why the
// package is not installed.
if reason == "" && why != "" || !strings.Contains(why, reason) && !strings.Contains(why, "not installed but available in build cache") {
tg.t.Errorf("wrong reason for Stale=true: %q, want %q", why, reason)
}
}
// wantNotStale fails with msg if pkg is stale.
func (tg *testgoData) wantNotStale(pkg, reason, msg string) {
tg.t.Helper()
stale, why := tg.isStale(pkg)
if stale {
tg.t.Fatal(msg)
}
if reason == "" && why != "" || !strings.Contains(why, reason) {
tg.t.Errorf("wrong reason for Stale=false: %q, want %q", why, reason)
}
}
// If -testwork is specified, the test prints the name of the temp directory
// and does not remove it when done, so that a programmer can
// poke at the test file tree afterward.
var testWork = flag.Bool("testwork", false, "")
// cleanup cleans up a test that runs testgo.
func (tg *testgoData) cleanup() {
tg.t.Helper()
if *testWork {
tg.t.Logf("TESTWORK=%s\n", tg.path("."))
return
}
for _, path := range tg.temps {
tg.check(removeAll(path))
}
if tg.tempdir != "" {
tg.check(removeAll(tg.tempdir))
}
}
func removeAll(dir string) error {
// module cache has 0444 directories;
// make them writable in order to remove content.
filepath.WalkDir(dir, func(path string, info fs.DirEntry, err error) error {
// chmod not only directories, but also things that we couldn't even stat
// due to permission errors: they may also be unreadable directories.
if err != nil || info.IsDir() {
os.Chmod(path, 0777)
}
return nil
})
return robustio.RemoveAll(dir)
}
// failSSH puts an ssh executable in the PATH that always fails.
// This is to stub out uses of ssh by go get.
func (tg *testgoData) failSSH() {
tg.t.Helper()
wd, err := os.Getwd()
if err != nil {
tg.t.Fatal(err)
}
fail := filepath.Join(wd, "testdata/failssh")
tg.setenv("PATH", fmt.Sprintf("%v%c%v", fail, filepath.ListSeparator, os.Getenv("PATH")))
}
func TestNewReleaseRebuildsStalePackagesInGOPATH(t *testing.T) {
if testing.Short() {
t.Skip("skipping lengthy test in short mode")
}
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
// Copy the runtime packages into a temporary GOROOT
// so that we can change files.
for _, copydir := range []string{
"src/runtime",
"src/internal/abi",
"src/internal/bytealg",
"src/internal/cpu",
"src/internal/goarch",
"src/internal/goexperiment",
"src/internal/goos",
"src/math/bits",
"src/unsafe",
filepath.Join("pkg", runtime.GOOS+"_"+runtime.GOARCH),
filepath.Join("pkg/tool", runtime.GOOS+"_"+runtime.GOARCH),
"pkg/include",
} {
srcdir := filepath.Join(testGOROOT, copydir)
tg.tempDir(filepath.Join("goroot", copydir))
err := filepath.WalkDir(srcdir,
func(path string, info fs.DirEntry, err error) error {
if err != nil {
return err
}
if info.IsDir() {
return nil
}
srcrel, err := filepath.Rel(srcdir, path)
if err != nil {
return err
}
dest := filepath.Join("goroot", copydir, srcrel)
data, err := os.ReadFile(path)
if err != nil {
return err
}
tg.tempFile(dest, string(data))
if strings.Contains(copydir, filepath.Join("pkg", "tool")) {
os.Chmod(tg.path(dest), 0777)
}
return nil
})
if err != nil {
t.Fatal(err)
}
}
tg.setenv("GOROOT", tg.path("goroot"))
addVar := func(name string, idx int) (restore func()) {
data, err := os.ReadFile(name)
if err != nil {
t.Fatal(err)
}
old := data
data = append(data, fmt.Sprintf("var DummyUnusedVar%d bool\n", idx)...)
if err := os.WriteFile(name, append(data, '\n'), 0666); err != nil {
t.Fatal(err)
}
tg.sleep()
return func() {
if err := os.WriteFile(name, old, 0666); err != nil {
t.Fatal(err)
}
}
}
// Every main package depends on the "runtime".
tg.tempFile("d1/src/p1/p1.go", `package main; func main(){}`)
tg.setenv("GOPATH", tg.path("d1"))
// Pass -i flag to rebuild everything outdated.
tg.run("install", "-i", "p1")
tg.wantNotStale("p1", "", "./testgo list claims p1 is stale, incorrectly, before any changes")
// Changing mtime of runtime/internal/sys/sys.go
// should have no effect: only the content matters.
// In fact this should be true even outside a release branch.
sys := tg.path("goroot/src/runtime/internal/sys/sys.go")
tg.sleep()
restore := addVar(sys, 0)
restore()
tg.wantNotStale("p1", "", "./testgo list claims p1 is stale, incorrectly, after updating mtime of runtime/internal/sys/sys.go")
// But changing content of any file should have an effect.
// Previously zversion.go was the only one that mattered;
// now they all matter, so keep using sys.go.
restore = addVar(sys, 1)
defer restore()
tg.wantStale("p1", "stale dependency: runtime/internal/sys", "./testgo list claims p1 is NOT stale, incorrectly, after changing sys.go")
restore()
tg.wantNotStale("p1", "", "./testgo list claims p1 is stale, incorrectly, after changing back to old release")
addVar(sys, 2)
tg.wantStale("p1", "stale dependency: runtime", "./testgo list claims p1 is NOT stale, incorrectly, after changing sys.go again")
tg.run("install", "-i", "p1")
tg.wantNotStale("p1", "", "./testgo list claims p1 is stale after building with new release")
// Restore to "old" release.
restore()
tg.wantStale("p1", "stale dependency: runtime/internal/sys", "./testgo list claims p1 is NOT stale, incorrectly, after restoring sys.go")
tg.run("install", "-i", "p1")
tg.wantNotStale("p1", "", "./testgo list claims p1 is stale after building with old release")
}
// cmd/go: custom import path checking should not apply to Go packages without import comment.
func TestIssue10952(t *testing.T) {
testenv.MustHaveExternalNetwork(t)
testenv.MustHaveExecPath(t, "git")
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempDir("src")
tg.setenv("GOPATH", tg.path("."))
const importPath = "github.com/zombiezen/go-get-issue-10952"
tg.run("get", "-d", "-u", importPath)
repoDir := tg.path("src/" + importPath)
tg.runGit(repoDir, "remote", "set-url", "origin", "https://"+importPath+".git")
tg.run("get", "-d", "-u", importPath)
}
// Test git clone URL that uses SCP-like syntax and custom import path checking.
func TestIssue11457(t *testing.T) {
testenv.MustHaveExternalNetwork(t)
testenv.MustHaveExecPath(t, "git")
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempDir("src")
tg.setenv("GOPATH", tg.path("."))
const importPath = "rsc.io/go-get-issue-11457"
tg.run("get", "-d", "-u", importPath)
repoDir := tg.path("src/" + importPath)
tg.runGit(repoDir, "remote", "set-url", "origin", "git@github.com:rsc/go-get-issue-11457")
// At this time, custom import path checking compares remotes verbatim (rather than
// just the host and path, skipping scheme and user), so we expect go get -u to fail.
// However, the goal of this test is to verify that gitRemoteRepo correctly parsed
// the SCP-like syntax, and we expect it to appear in the error message.
tg.runFail("get", "-d", "-u", importPath)
want := " is checked out from ssh://git@github.com/rsc/go-get-issue-11457"
if !strings.HasSuffix(strings.TrimSpace(tg.getStderr()), want) {
t.Error("expected clone URL to appear in stderr")
}
}
func TestGetGitDefaultBranch(t *testing.T) {
testenv.MustHaveExternalNetwork(t)
testenv.MustHaveExecPath(t, "git")
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempDir("src")
tg.setenv("GOPATH", tg.path("."))
// This repo has two branches, master and another-branch.
// The another-branch is the default that you get from 'git clone'.
// The go get command variants should not override this.
const importPath = "github.com/rsc/go-get-default-branch"
tg.run("get", "-d", importPath)
repoDir := tg.path("src/" + importPath)
tg.runGit(repoDir, "branch", "--contains", "HEAD")
tg.grepStdout(`\* another-branch`, "not on correct default branch")
tg.run("get", "-d", "-u", importPath)
tg.runGit(repoDir, "branch", "--contains", "HEAD")
tg.grepStdout(`\* another-branch`, "not on correct default branch")
}
// Security issue. Don't disable. See golang.org/issue/22125.
func TestAccidentalGitCheckout(t *testing.T) {
testenv.MustHaveExternalNetwork(t)
testenv.MustHaveExecPath(t, "git")
testenv.MustHaveExecPath(t, "svn")
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempDir("src")
tg.setenv("GOPATH", tg.path("."))
tg.runFail("get", "-u", "vcs-test.golang.org/go/test1-svn-git")
tg.grepStderr("src[\\\\/]vcs-test.* uses git, but parent .*src[\\\\/]vcs-test.* uses svn", "get did not fail for right reason")
if _, err := os.Stat(tg.path("SrC")); err == nil {
// This case only triggers on a case-insensitive file system.
tg.runFail("get", "-u", "vcs-test.golang.org/go/test2-svn-git/test2main")
tg.grepStderr("src[\\\\/]vcs-test.* uses git, but parent .*src[\\\\/]vcs-test.* uses svn", "get did not fail for right reason")
}
}
func TestPackageMainTestCompilerFlags(t *testing.T) {
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.makeTempdir()
tg.setenv("GOPATH", tg.path("."))
tg.tempFile("src/p1/p1.go", "package main\n")
tg.tempFile("src/p1/p1_test.go", "package main\nimport \"testing\"\nfunc Test(t *testing.T){}\n")
tg.run("test", "-c", "-n", "p1")
tg.grepBothNot(`([\\/]compile|gccgo).* (-p main|-fgo-pkgpath=main).*p1\.go`, "should not have run compile -p main p1.go")
tg.grepStderr(`([\\/]compile|gccgo).* (-p p1|-fgo-pkgpath=p1).*p1\.go`, "should have run compile -p p1 p1.go")
}
// Issue 4104.
func TestGoTestWithPackageListedMultipleTimes(t *testing.T) {
tooSlow(t)
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.run("test", "errors", "errors", "errors", "errors", "errors")
if strings.Contains(strings.TrimSpace(tg.getStdout()), "\n") {
t.Error("go test errors errors errors errors errors tested the same package multiple times")
}
}
func TestGoListHasAConsistentOrder(t *testing.T) {
tooSlow(t)
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.run("list", "std")
first := tg.getStdout()
tg.run("list", "std")
if first != tg.getStdout() {
t.Error("go list std ordering is inconsistent")
}
}
func TestGoListStdDoesNotIncludeCommands(t *testing.T) {
tooSlow(t)
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.run("list", "std")
tg.grepStdoutNot("cmd/", "go list std shows commands")
}
func TestGoListCmdOnlyShowsCommands(t *testing.T) {
skipIfGccgo(t, "gccgo does not have GOROOT")
tooSlow(t)
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.run("list", "cmd")
out := strings.TrimSpace(tg.getStdout())
for _, line := range strings.Split(out, "\n") {
if !strings.Contains(line, "cmd/") {
t.Error("go list cmd shows non-commands")
break
}
}
}
func TestGoListDeps(t *testing.T) {
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempDir("src/p1/p2/p3/p4")
tg.setenv("GOPATH", tg.path("."))
tg.tempFile("src/p1/p.go", "package p1\nimport _ \"p1/p2\"\n")
tg.tempFile("src/p1/p2/p.go", "package p2\nimport _ \"p1/p2/p3\"\n")
tg.tempFile("src/p1/p2/p3/p.go", "package p3\nimport _ \"p1/p2/p3/p4\"\n")
tg.tempFile("src/p1/p2/p3/p4/p.go", "package p4\n")
tg.run("list", "-f", "{{.Deps}}", "p1")
tg.grepStdout("p1/p2/p3/p4", "Deps(p1) does not mention p4")
tg.run("list", "-deps", "p1")
tg.grepStdout("p1/p2/p3/p4", "-deps p1 does not mention p4")
if runtime.Compiler != "gccgo" {
// Check the list is in dependency order.
tg.run("list", "-deps", "math")
want := "internal/cpu\nunsafe\nmath/bits\nmath\n"
out := tg.stdout.String()
if !strings.Contains(out, "internal/cpu") {
// Some systems don't use internal/cpu.
want = "unsafe\nmath/bits\nmath\n"
}
if tg.stdout.String() != want {
t.Fatalf("list -deps math: wrong order\nhave %q\nwant %q", tg.stdout.String(), want)
}
}
}
func TestGoListTest(t *testing.T) {
skipIfGccgo(t, "gccgo does not have standard packages")
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.makeTempdir()
tg.setenv("GOCACHE", tg.tempdir)
tg.run("list", "-test", "-deps", "sort")
tg.grepStdout(`^sort.test$`, "missing test main")
tg.grepStdout(`^sort$`, "missing real sort")
tg.grepStdout(`^sort \[sort.test\]$`, "missing test copy of sort")
tg.grepStdout(`^testing \[sort.test\]$`, "missing test copy of testing")
tg.grepStdoutNot(`^testing$`, "unexpected real copy of testing")
tg.run("list", "-test", "sort")
tg.grepStdout(`^sort.test$`, "missing test main")
tg.grepStdout(`^sort$`, "missing real sort")
tg.grepStdout(`^sort \[sort.test\]$`, "unexpected test copy of sort")
tg.grepStdoutNot(`^testing \[sort.test\]$`, "unexpected test copy of testing")
tg.grepStdoutNot(`^testing$`, "unexpected real copy of testing")
tg.run("list", "-test", "cmd/buildid", "cmd/doc")
tg.grepStdout(`^cmd/buildid$`, "missing cmd/buildid")
tg.grepStdout(`^cmd/doc$`, "missing cmd/doc")
tg.grepStdout(`^cmd/doc\.test$`, "missing cmd/doc test")
tg.grepStdoutNot(`^cmd/buildid\.test$`, "unexpected cmd/buildid test")
tg.grepStdoutNot(`^testing`, "unexpected testing")
tg.run("list", "-test", "runtime/cgo")
tg.grepStdout(`^runtime/cgo$`, "missing runtime/cgo")
tg.run("list", "-deps", "-f", "{{if .DepOnly}}{{.ImportPath}}{{end}}", "sort")
tg.grepStdout(`^internal/reflectlite$`, "missing internal/reflectlite")
tg.grepStdoutNot(`^sort`, "unexpected sort")
}
func TestGoListCompiledCgo(t *testing.T) {
tooSlow(t)
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.makeTempdir()
tg.setenv("GOCACHE", tg.tempdir)
tg.run("list", "-f", `{{join .CgoFiles "\n"}}`, "net")
if tg.stdout.String() == "" {
t.Skip("net does not use cgo")
}
if strings.Contains(tg.stdout.String(), tg.tempdir) {
t.Fatalf(".CgoFiles unexpectedly mentioned cache %s", tg.tempdir)
}
tg.run("list", "-compiled", "-f", `{{.Dir}}{{"\n"}}{{join .CompiledGoFiles "\n"}}`, "net")
if !strings.Contains(tg.stdout.String(), tg.tempdir) {
t.Fatalf(".CompiledGoFiles with -compiled did not mention cache %s", tg.tempdir)
}
dir := ""
for _, file := range strings.Split(tg.stdout.String(), "\n") {
if file == "" {
continue
}
if dir == "" {
dir = file
continue
}
if !strings.Contains(file, "/") && !strings.Contains(file, `\`) {
file = filepath.Join(dir, file)
}
if _, err := os.Stat(file); err != nil {
t.Fatalf("cannot find .CompiledGoFiles result %s: %v", file, err)
}
}
}
func TestGoListExport(t *testing.T) {
skipIfGccgo(t, "gccgo does not have standard packages")
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.makeTempdir()
tg.setenv("GOCACHE", tg.tempdir)
tg.run("list", "-f", "{{.Export}}", "strings")
if tg.stdout.String() != "" {
t.Fatalf(".Export without -export unexpectedly set")
}
tg.run("list", "-export", "-f", "{{.Export}}", "strings")
file := strings.TrimSpace(tg.stdout.String())
if file == "" {
t.Fatalf(".Export with -export was empty")
}
if _, err := os.Stat(file); err != nil {
t.Fatalf("cannot find .Export result %s: %v", file, err)
}
tg.run("list", "-export", "-f", "{{.BuildID}}", "strings")
buildID := strings.TrimSpace(tg.stdout.String())
if buildID == "" {
t.Fatalf(".BuildID with -export was empty")
}
tg.run("tool", "buildid", file)
toolBuildID := strings.TrimSpace(tg.stdout.String())
if buildID != toolBuildID {
t.Fatalf(".BuildID with -export %q disagrees with 'go tool buildid' %q", buildID, toolBuildID)
}
}
// Issue 4096. Validate the output of unsuccessful go install foo/quxx.
func TestUnsuccessfulGoInstallShouldMentionMissingPackage(t *testing.T) {
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.runFail("install", "foo/quxx")
if tg.grepCountBoth(`cannot find package "foo/quxx" in any of`) != 1 {
t.Error(`go install foo/quxx expected error: .*cannot find package "foo/quxx" in any of`)
}
}
func TestGOROOTSearchFailureReporting(t *testing.T) {
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.runFail("install", "foo/quxx")
if tg.grepCountBoth(regexp.QuoteMeta(filepath.Join("foo", "quxx"))+` \(from \$GOROOT\)$`) != 1 {
t.Error(`go install foo/quxx expected error: .*foo/quxx (from $GOROOT)`)
}
}
func TestMultipleGOPATHEntriesReportedSeparately(t *testing.T) {
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
sep := string(filepath.ListSeparator)
tg.setenv("GOPATH", filepath.Join(tg.pwd(), "testdata", "a")+sep+filepath.Join(tg.pwd(), "testdata", "b"))
tg.runFail("install", "foo/quxx")
if tg.grepCountBoth(`testdata[/\\].[/\\]src[/\\]foo[/\\]quxx`) != 2 {
t.Error(`go install foo/quxx expected error: .*testdata/a/src/foo/quxx (from $GOPATH)\n.*testdata/b/src/foo/quxx`)
}
}
// Test (from $GOPATH) annotation is reported for the first GOPATH entry,
func TestMentionGOPATHInFirstGOPATHEntry(t *testing.T) {
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
sep := string(filepath.ListSeparator)
tg.setenv("GOPATH", filepath.Join(tg.pwd(), "testdata", "a")+sep+filepath.Join(tg.pwd(), "testdata", "b"))
tg.runFail("install", "foo/quxx")
if tg.grepCountBoth(regexp.QuoteMeta(filepath.Join("testdata", "a", "src", "foo", "quxx"))+` \(from \$GOPATH\)$`) != 1 {
t.Error(`go install foo/quxx expected error: .*testdata/a/src/foo/quxx (from $GOPATH)`)
}
}
// but not on the second.
func TestMentionGOPATHNotOnSecondEntry(t *testing.T) {
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
sep := string(filepath.ListSeparator)
tg.setenv("GOPATH", filepath.Join(tg.pwd(), "testdata", "a")+sep+filepath.Join(tg.pwd(), "testdata", "b"))
tg.runFail("install", "foo/quxx")
if tg.grepCountBoth(regexp.QuoteMeta(filepath.Join("testdata", "b", "src", "foo", "quxx"))+`$`) != 1 {
t.Error(`go install foo/quxx expected error: .*testdata/b/src/foo/quxx`)
}
}
func homeEnvName() string {
switch runtime.GOOS {
case "windows":
return "USERPROFILE"
case "plan9":
return "home"
default:
return "HOME"
}
}
func tempEnvName() string {
switch runtime.GOOS {
case "windows":
return "TMP"
case "plan9":
return "TMPDIR" // actually plan 9 doesn't have one at all but this is fine
default:
return "TMPDIR"
}
}
func pathEnvName() string {
switch runtime.GOOS {
case "plan9":
return "path"
default:
return "PATH"
}
}
func TestDefaultGOPATH(t *testing.T) {
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempDir("home/go")
tg.setenv(homeEnvName(), tg.path("home"))
tg.run("env", "GOPATH")
tg.grepStdout(regexp.QuoteMeta(tg.path("home/go")), "want GOPATH=$HOME/go")
tg.setenv("GOROOT", tg.path("home/go"))
tg.run("env", "GOPATH")
tg.grepStdoutNot(".", "want unset GOPATH because GOROOT=$HOME/go")
tg.setenv("GOROOT", tg.path("home/go")+"/")
tg.run("env", "GOPATH")
tg.grepStdoutNot(".", "want unset GOPATH because GOROOT=$HOME/go/")
}
func TestDefaultGOPATHGet(t *testing.T) {
testenv.MustHaveExternalNetwork(t)
testenv.MustHaveExecPath(t, "git")
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.setenv("GOPATH", "")
tg.tempDir("home")
tg.setenv(homeEnvName(), tg.path("home"))
// warn for creating directory
tg.run("get", "-v", "github.com/golang/example/hello")
tg.grepStderr("created GOPATH="+regexp.QuoteMeta(tg.path("home/go"))+"; see 'go help gopath'", "did not create GOPATH")
// no warning if directory already exists
tg.must(robustio.RemoveAll(tg.path("home/go")))
tg.tempDir("home/go")
tg.run("get", "github.com/golang/example/hello")
tg.grepStderrNot(".", "expected no output on standard error")
// error if $HOME/go is a file
tg.must(robustio.RemoveAll(tg.path("home/go")))
tg.tempFile("home/go", "")
tg.runFail("get", "github.com/golang/example/hello")
tg.grepStderr(`mkdir .*[/\\]go: .*(not a directory|cannot find the path)`, "expected error because $HOME/go is a file")
}
func TestDefaultGOPATHPrintedSearchList(t *testing.T) {
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.setenv("GOPATH", "")
tg.tempDir("home")
tg.setenv(homeEnvName(), tg.path("home"))
tg.runFail("install", "github.com/golang/example/hello")
tg.grepStderr(regexp.QuoteMeta(tg.path("home/go/src/github.com/golang/example/hello"))+`.*from \$GOPATH`, "expected default GOPATH")
}
func TestLdflagsArgumentsWithSpacesIssue3941(t *testing.T) {
skipIfGccgo(t, "gccgo does not support -ldflags -X")
tooSlow(t)
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempFile("main.go", `package main
var extern string
func main() {
println(extern)
}`)
tg.run("run", "-ldflags", `-X "main.extern=hello world"`, tg.path("main.go"))
tg.grepStderr("^hello world", `ldflags -X "main.extern=hello world"' failed`)
}
func TestLdFlagsLongArgumentsIssue42295(t *testing.T) {
// Test the extremely long command line arguments that contain '\n' characters
// get encoded and passed correctly.
skipIfGccgo(t, "gccgo does not support -ldflags -X")
tooSlow(t)
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempFile("main.go", `package main
var extern string
func main() {
print(extern)
}`)
testStr := "test test test test test \n\\ "
var buf bytes.Buffer
for buf.Len() < sys.ExecArgLengthLimit+1 {
buf.WriteString(testStr)
}
tg.run("run", "-ldflags", fmt.Sprintf(`-X "main.extern=%s"`, buf.String()), tg.path("main.go"))
if tg.stderr.String() != buf.String() {
t.Errorf("strings differ")
}
}
func TestGoTestDashCDashOControlsBinaryLocation(t *testing.T) {
skipIfGccgo(t, "gccgo has no standard packages")
tooSlow(t)
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.makeTempdir()
tg.run("test", "-c", "-o", tg.path("myerrors.test"+exeSuffix), "errors")
tg.wantExecutable(tg.path("myerrors.test"+exeSuffix), "go test -c -o myerrors.test did not create myerrors.test")
}
func TestGoTestDashOWritesBinary(t *testing.T) {
skipIfGccgo(t, "gccgo has no standard packages")
tooSlow(t)
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.makeTempdir()
tg.run("test", "-o", tg.path("myerrors.test"+exeSuffix), "errors")
tg.wantExecutable(tg.path("myerrors.test"+exeSuffix), "go test -o myerrors.test did not create myerrors.test")
}
func TestGoTestDashIDashOWritesBinary(t *testing.T) {
skipIfGccgo(t, "gccgo has no standard packages")
tooSlow(t)
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.makeTempdir()
// don't let test -i overwrite runtime
tg.wantNotStale("runtime", "", "must be non-stale before test -i")
tg.run("test", "-v", "-i", "-o", tg.path("myerrors.test"+exeSuffix), "errors")
tg.grepBothNot("PASS|FAIL", "test should not have run")
tg.wantExecutable(tg.path("myerrors.test"+exeSuffix), "go test -o myerrors.test did not create myerrors.test")
}
// Issue 4515.
func TestInstallWithTags(t *testing.T) {
tooSlow(t)
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempDir("bin")
tg.tempFile("src/example/a/main.go", `package main
func main() {}`)
tg.tempFile("src/example/b/main.go", `// +build mytag
package main
func main() {}`)
tg.setenv("GOPATH", tg.path("."))
tg.run("install", "-tags", "mytag", "example/a", "example/b")
tg.wantExecutable(tg.path("bin/a"+exeSuffix), "go install example/a example/b did not install binaries")
tg.wantExecutable(tg.path("bin/b"+exeSuffix), "go install example/a example/b did not install binaries")
tg.must(os.Remove(tg.path("bin/a" + exeSuffix)))
tg.must(os.Remove(tg.path("bin/b" + exeSuffix)))
tg.run("install", "-tags", "mytag", "example/...")
tg.wantExecutable(tg.path("bin/a"+exeSuffix), "go install example/... did not install binaries")
tg.wantExecutable(tg.path("bin/b"+exeSuffix), "go install example/... did not install binaries")
tg.run("list", "-tags", "mytag", "example/b...")
if strings.TrimSpace(tg.getStdout()) != "example/b" {
t.Error("go list example/b did not find example/b")
}
}
// Issue 17451, 17662.
func TestSymlinkWarning(t *testing.T) {
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.makeTempdir()
tg.setenv("GOPATH", tg.path("."))
tg.tempDir("src/example/xx")
tg.tempDir("yy/zz")
tg.tempFile("yy/zz/zz.go", "package zz\n")
if err := os.Symlink(tg.path("yy"), tg.path("src/example/xx/yy")); err != nil {
t.Skipf("symlink failed: %v", err)
}
tg.run("list", "example/xx/z...")
tg.grepStdoutNot(".", "list should not have matched anything")
tg.grepStderr("matched no packages", "list should have reported that pattern matched no packages")
tg.grepStderrNot("symlink", "list should not have reported symlink")
tg.run("list", "example/xx/...")
tg.grepStdoutNot(".", "list should not have matched anything")
tg.grepStderr("matched no packages", "list should have reported that pattern matched no packages")
tg.grepStderr("ignoring symlink", "list should have reported symlink")
}
func TestCgoShowsFullPathNames(t *testing.T) {
if !canCgo {
t.Skip("skipping because cgo not enabled")
}
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempFile("src/x/y/dirname/foo.go", `
package foo
import "C"
func f() {`)
tg.setenv("GOPATH", tg.path("."))
tg.runFail("build", "x/y/dirname")
tg.grepBoth("x/y/dirname", "error did not use full path")
}
func TestCgoHandlesWlORIGIN(t *testing.T) {
tooSlow(t)
if !canCgo {
t.Skip("skipping because cgo not enabled")
}
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempFile("src/origin/origin.go", `package origin
// #cgo !darwin,!windows LDFLAGS: -Wl,-rpath,$ORIGIN
// void f(void) {}
import "C"
func f() { C.f() }`)
tg.setenv("GOPATH", tg.path("."))
tg.run("build", "origin")
}
func TestCgoPkgConfig(t *testing.T) {
tooSlow(t)
if !canCgo {
t.Skip("skipping because cgo not enabled")
}
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.run("env", "PKG_CONFIG")
pkgConfig := strings.TrimSpace(tg.getStdout())
testenv.MustHaveExecPath(t, pkgConfig)
if out, err := exec.Command(pkgConfig, "--atleast-pkgconfig-version", "0.24").CombinedOutput(); err != nil {
t.Skipf("%s --atleast-pkgconfig-version 0.24: %v\n%s", pkgConfig, err, out)
}
// OpenBSD's pkg-config is strict about whitespace and only
// supports backslash-escaped whitespace. It does not support
// quotes, which the normal freedesktop.org pkg-config does
// support. See https://man.openbsd.org/pkg-config.1
tg.tempFile("foo.pc", `
Name: foo
Description: The foo library
Version: 1.0.0
Cflags: -Dhello=10 -Dworld=+32 -DDEFINED_FROM_PKG_CONFIG=hello\ world
`)
tg.tempFile("foo.go", `package main
/*
#cgo pkg-config: foo
int value() {
return DEFINED_FROM_PKG_CONFIG;
}
*/
import "C"
import "os"
func main() {
if C.value() != 42 {
println("value() =", C.value(), "wanted 42")
os.Exit(1)
}
}
`)
tg.setenv("PKG_CONFIG_PATH", tg.path("."))
tg.run("run", tg.path("foo.go"))
}
func TestListTemplateContextFunction(t *testing.T) {
t.Parallel()
for _, tt := range []struct {
v string
want string
}{
{"GOARCH", runtime.GOARCH},
{"GOOS", runtime.GOOS},
{"GOROOT", testGOROOT},
{"GOPATH", os.Getenv("GOPATH")},
{"CgoEnabled", ""},
{"UseAllFiles", ""},
{"Compiler", ""},
{"BuildTags", ""},
{"ReleaseTags", ""},
{"InstallSuffix", ""},
} {
tt := tt
t.Run(tt.v, func(t *testing.T) {
tg := testgo(t)
tg.parallel()
defer tg.cleanup()
tmpl := "{{context." + tt.v + "}}"
tg.run("list", "-f", tmpl)
if tt.want == "" {
return
}
if got := strings.TrimSpace(tg.getStdout()); got != tt.want {
t.Errorf("go list -f %q: got %q; want %q", tmpl, got, tt.want)
}
})
}
}
// Test that you cannot use a local import in a package
// accessed by a non-local import (found in a GOPATH/GOROOT).
// See golang.org/issue/17475.
func TestImportLocal(t *testing.T) {
tooSlow(t)
tg := testgo(t)
tg.parallel()
defer tg.cleanup()
tg.tempFile("src/dir/x/x.go", `package x
var X int
`)
tg.setenv("GOPATH", tg.path("."))
tg.run("build", "dir/x")
// Ordinary import should work.
tg.tempFile("src/dir/p0/p.go", `package p0
import "dir/x"
var _ = x.X
`)
tg.run("build", "dir/p0")
// Relative import should not.
tg.tempFile("src/dir/p1/p.go", `package p1
import "../x"
var _ = x.X
`)
tg.runFail("build", "dir/p1")
tg.grepStderr("local import.*in non-local package", "did not diagnose local import")
// ... even in a test.
tg.tempFile("src/dir/p2/p.go", `package p2
`)
tg.tempFile("src/dir/p2/p_test.go", `package p2
import "../x"
import "testing"
var _ = x.X
func TestFoo(t *testing.T) {}
`)
tg.run("build", "dir/p2")
tg.runFail("test", "dir/p2")
tg.grepStderr("local import.*in non-local package", "did not diagnose local import")
// ... even in an xtest.
tg.tempFile("src/dir/p2/p_test.go", `package p2_test
import "../x"
import "testing"
var _ = x.X
func TestFoo(t *testing.T) {}
`)
tg.run("build", "dir/p2")
tg.runFail("test", "dir/p2")
tg.grepStderr("local import.*in non-local package", "did not diagnose local import")
// Relative import starting with ./ should not work either.
tg.tempFile("src/dir/d.go", `package dir
import "./x"
var _ = x.X
`)
tg.runFail("build", "dir")
tg.grepStderr("local import.*in non-local package", "did not diagnose local import")
// ... even in a test.
tg.tempFile("src/dir/d.go", `package dir
`)
tg.tempFile("src/dir/d_test.go", `package dir
import "./x"
import "testing"
var _ = x.X
func TestFoo(t *testing.T) {}
`)
tg.run("build", "dir")
tg.runFail("test", "dir")
tg.grepStderr("local import.*in non-local package", "did not diagnose local import")
// ... even in an xtest.
tg.tempFile("src/dir/d_test.go", `package dir_test
import "./x"
import "testing"
var _ = x.X
func TestFoo(t *testing.T) {}
`)
tg.run("build", "dir")
tg.runFail("test", "dir")
tg.grepStderr("local import.*in non-local package", "did not diagnose local import")
// Relative import plain ".." should not work.
tg.tempFile("src/dir/x/y/y.go", `package dir
import ".."
var _ = x.X
`)
tg.runFail("build", "dir/x/y")
tg.grepStderr("local import.*in non-local package", "did not diagnose local import")
// ... even in a test.
tg.tempFile("src/dir/x/y/y.go", `package y
`)
tg.tempFile("src/dir/x/y/y_test.go", `package y
import ".."
import "testing"
var _ = x.X
func TestFoo(t *testing.T) {}
`)
tg.run("build", "dir/x/y")
tg.runFail("test", "dir/x/y")
tg.grepStderr("local import.*in non-local package", "did not diagnose local import")
// ... even in an x test.
tg.tempFile("src/dir/x/y/y_test.go", `package y_test
import ".."
import "testing"
var _ = x.X
func TestFoo(t *testing.T) {}
`)
tg.run("build", "dir/x/y")
tg.runFail("test", "dir/x/y")
tg.grepStderr("local import.*in non-local package", "did not diagnose local import")
// Relative import "." should not work.
tg.tempFile("src/dir/x/xx.go", `package x
import "."
var _ = x.X
`)
tg.runFail("build", "dir/x")
tg.grepStderr("cannot import current directory", "did not diagnose import current directory")
// ... even in a test.
tg.tempFile("src/dir/x/xx.go", `package x
`)
tg.tempFile("src/dir/x/xx_test.go", `package x
import "."
import "testing"
var _ = x.X
func TestFoo(t *testing.T) {}
`)
tg.run("build", "dir/x")
tg.runFail("test", "dir/x")
tg.grepStderr("cannot import current directory", "did not diagnose import current directory")
// ... even in an xtest.
tg.tempFile("src/dir/x/xx.go", `package x
`)
tg.tempFile("src/dir/x/xx_test.go", `package x_test
import "."
import "testing"
var _ = x.X
func TestFoo(t *testing.T) {}
`)
tg.run("build", "dir/x")
tg.runFail("test", "dir/x")
tg.grepStderr("cannot import current directory", "did not diagnose import current directory")
}
func TestGoInstallPkgdir(t *testing.T) {
skipIfGccgo(t, "gccgo has no standard packages")
tooSlow(t)
tg := testgo(t)
tg.parallel()
defer tg.cleanup()
tg.makeTempdir()
pkg := tg.path(".")
tg.run("install", "-pkgdir", pkg, "sync")
tg.mustExist(filepath.Join(pkg, "sync.a"))
tg.mustNotExist(filepath.Join(pkg, "sync/atomic.a"))
tg.run("install", "-i", "-pkgdir", pkg, "sync")
tg.mustExist(filepath.Join(pkg, "sync.a"))
tg.mustExist(filepath.Join(pkg, "sync/atomic.a"))
}
// For issue 14337.
func TestParallelTest(t *testing.T) {
tooSlow(t)
tg := testgo(t)
tg.parallel()
defer tg.cleanup()
tg.makeTempdir()
const testSrc = `package package_test
import (
"testing"
)
func TestTest(t *testing.T) {
}`
tg.tempFile("src/p1/p1_test.go", strings.Replace(testSrc, "package_test", "p1_test", 1))
tg.tempFile("src/p2/p2_test.go", strings.Replace(testSrc, "package_test", "p2_test", 1))
tg.tempFile("src/p3/p3_test.go", strings.Replace(testSrc, "package_test", "p3_test", 1))
tg.tempFile("src/p4/p4_test.go", strings.Replace(testSrc, "package_test", "p4_test", 1))
tg.setenv("GOPATH", tg.path("."))
tg.run("test", "-p=4", "p1", "p2", "p3", "p4")
}
func TestBinaryOnlyPackages(t *testing.T) {
tooSlow(t)
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.makeTempdir()
tg.setenv("GOPATH", tg.path("."))
tg.tempFile("src/p1/p1.go", `//go:binary-only-package
package p1
`)
tg.wantStale("p1", "binary-only packages are no longer supported", "p1 is binary-only, and this message should always be printed")
tg.runFail("install", "p1")
tg.grepStderr("binary-only packages are no longer supported", "did not report attempt to compile binary-only package")
tg.tempFile("src/p1/p1.go", `
package p1
import "fmt"
func F(b bool) { fmt.Printf("hello from p1\n"); if b { F(false) } }
`)
tg.run("install", "p1")
os.Remove(tg.path("src/p1/p1.go"))
tg.mustNotExist(tg.path("src/p1/p1.go"))
tg.tempFile("src/p2/p2.go", `//go:binary-only-packages-are-not-great
package p2
import "p1"
func F() { p1.F(true) }
`)
tg.runFail("install", "p2")
tg.grepStderr("no Go files", "did not complain about missing sources")
tg.tempFile("src/p1/missing.go", `//go:binary-only-package
package p1
import _ "fmt"
func G()
`)
tg.wantStale("p1", "binary-only package", "should NOT want to rebuild p1 (first)")
tg.runFail("install", "p2")
tg.grepStderr("p1: binary-only packages are no longer supported", "did not report error for binary-only p1")
tg.run("list", "-deps", "-f", "{{.ImportPath}}: {{.BinaryOnly}}", "p2")
tg.grepStdout("p1: true", "p1 not listed as BinaryOnly")
tg.grepStdout("p2: false", "p2 listed as BinaryOnly")
}
// Issue 16050 and 21884.
func TestLinkSysoFiles(t *testing.T) {
if runtime.GOOS != "linux" || runtime.GOARCH != "amd64" {
t.Skip("not linux/amd64")
}
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempDir("src/syso")
tg.tempFile("src/syso/a.syso", ``)
tg.tempFile("src/syso/b.go", `package syso`)
tg.setenv("GOPATH", tg.path("."))
// We should see the .syso file regardless of the setting of
// CGO_ENABLED.
tg.setenv("CGO_ENABLED", "1")
tg.run("list", "-f", "{{.SysoFiles}}", "syso")
tg.grepStdout("a.syso", "missing syso file with CGO_ENABLED=1")
tg.setenv("CGO_ENABLED", "0")
tg.run("list", "-f", "{{.SysoFiles}}", "syso")
tg.grepStdout("a.syso", "missing syso file with CGO_ENABLED=0")
tg.setenv("CGO_ENABLED", "1")
tg.run("list", "-msan", "-f", "{{.SysoFiles}}", "syso")
tg.grepStdoutNot("a.syso", "unexpected syso file with -msan")
}
// Issue 16120.
func TestGenerateUsesBuildContext(t *testing.T) {
if runtime.GOOS == "windows" {
t.Skip("this test won't run under Windows")
}
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempDir("src/gen")
tg.tempFile("src/gen/gen.go", "package gen\n//go:generate echo $GOOS $GOARCH\n")
tg.setenv("GOPATH", tg.path("."))
tg.setenv("GOOS", "linux")
tg.setenv("GOARCH", "amd64")
tg.run("generate", "gen")
tg.grepStdout("linux amd64", "unexpected GOOS/GOARCH combination")
tg.setenv("GOOS", "darwin")
tg.setenv("GOARCH", "arm64")
tg.run("generate", "gen")
tg.grepStdout("darwin arm64", "unexpected GOOS/GOARCH combination")
}
func TestGoEnv(t *testing.T) {
tg := testgo(t)
tg.parallel()
defer tg.cleanup()
tg.setenv("GOOS", "freebsd") // to avoid invalid pair errors
tg.setenv("GOARCH", "arm")
tg.run("env", "GOARCH")
tg.grepStdout("^arm$", "GOARCH not honored")
tg.run("env", "GCCGO")
tg.grepStdout(".", "GCCGO unexpectedly empty")
tg.run("env", "CGO_CFLAGS")
tg.grepStdout(".", "default CGO_CFLAGS unexpectedly empty")
tg.setenv("CGO_CFLAGS", "-foobar")
tg.run("env", "CGO_CFLAGS")
tg.grepStdout("^-foobar$", "CGO_CFLAGS not honored")
tg.setenv("CC", "gcc -fmust -fgo -ffaster")
tg.run("env", "CC")
tg.grepStdout("gcc", "CC not found")
tg.run("env", "GOGCCFLAGS")
tg.grepStdout("-ffaster", "CC arguments not found")
tg.run("env", "GOVERSION")
envVersion := strings.TrimSpace(tg.stdout.String())
tg.run("version")
cmdVersion := strings.TrimSpace(tg.stdout.String())
// If 'go version' is "go version <version> <goos>/<goarch>", then
// 'go env GOVERSION' is just "<version>".
if cmdVersion == envVersion || !strings.Contains(cmdVersion, envVersion) {
t.Fatalf("'go env GOVERSION' %q should be a shorter substring of 'go version' %q", envVersion, cmdVersion)
}
}
const (
noMatchesPattern = `(?m)^ok.*\[no tests to run\]`
okPattern = `(?m)^ok`
)
// Issue 18044.
func TestLdBindNow(t *testing.T) {
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.setenv("LD_BIND_NOW", "1")
tg.run("help")
}
// Issue 18225.
// This is really a cmd/asm issue but this is a convenient place to test it.
func TestConcurrentAsm(t *testing.T) {
skipIfGccgo(t, "gccgo does not use cmd/asm")
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
asm := `DATA ·constants<>+0x0(SB)/8,$0
GLOBL ·constants<>(SB),8,$8
`
tg.tempFile("go/src/p/a.s", asm)
tg.tempFile("go/src/p/b.s", asm)
tg.tempFile("go/src/p/p.go", `package p`)
tg.setenv("GOPATH", tg.path("go"))
tg.run("build", "p")
}
// Issue 18975.
func TestFFLAGS(t *testing.T) {
if !canCgo {
t.Skip("skipping because cgo not enabled")
}
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempFile("p/src/p/main.go", `package main
// #cgo FFLAGS: -no-such-fortran-flag
import "C"
func main() {}
`)
tg.tempFile("p/src/p/a.f", `! comment`)
tg.setenv("GOPATH", tg.path("p"))
// This should normally fail because we are passing an unknown flag,
// but issue #19080 points to Fortran compilers that succeed anyhow.
// To work either way we call doRun directly rather than run or runFail.
tg.doRun([]string{"build", "-x", "p"})
tg.grepStderr("no-such-fortran-flag", `missing expected "-no-such-fortran-flag"`)
}
// Issue 19198.
// This is really a cmd/link issue but this is a convenient place to test it.
func TestDuplicateGlobalAsmSymbols(t *testing.T) {
skipIfGccgo(t, "gccgo does not use cmd/asm")
tooSlow(t)
if runtime.GOARCH != "386" && runtime.GOARCH != "amd64" {
t.Skipf("skipping test on %s", runtime.GOARCH)
}
if !canCgo {
t.Skip("skipping because cgo not enabled")
}
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
asm := `
#include "textflag.h"
DATA sym<>+0x0(SB)/8,$0
GLOBL sym<>(SB),(NOPTR+RODATA),$8
TEXT ·Data(SB),NOSPLIT,$0
MOVB sym<>(SB), AX
MOVB AX, ret+0(FP)
RET
`
tg.tempFile("go/src/a/a.s", asm)
tg.tempFile("go/src/a/a.go", `package a; func Data() uint8`)
tg.tempFile("go/src/b/b.s", asm)
tg.tempFile("go/src/b/b.go", `package b; func Data() uint8`)
tg.tempFile("go/src/p/p.go", `
package main
import "a"
import "b"
import "C"
func main() {
_ = a.Data() + b.Data()
}
`)
tg.setenv("GOPATH", tg.path("go"))
exe := tg.path("p.exe")
tg.creatingTemp(exe)
tg.run("build", "-o", exe, "p")
}
func copyFile(src, dst string, perm fs.FileMode) error {
sf, err := os.Open(src)
if err != nil {
return err
}
defer sf.Close()
df, err := os.OpenFile(dst, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, perm)
if err != nil {
return err
}
_, err = io.Copy(df, sf)
err2 := df.Close()
if err != nil {
return err
}
return err2
}
func TestNeedVersion(t *testing.T) {
skipIfGccgo(t, "gccgo does not use cmd/compile")
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempFile("goversion.go", `package main; func main() {}`)
path := tg.path("goversion.go")
tg.setenv("TESTGO_VERSION", "go1.testgo")
tg.runFail("run", path)
tg.grepStderr("compile", "does not match go tool version")
}
func TestBuildmodePIE(t *testing.T) {
if testing.Short() && testenv.Builder() == "" {
t.Skipf("skipping in -short mode on non-builder")
}
platform := fmt.Sprintf("%s/%s", runtime.GOOS, runtime.GOARCH)
switch platform {
case "linux/386", "linux/amd64", "linux/arm", "linux/arm64", "linux/ppc64le", "linux/riscv64", "linux/s390x",
"android/amd64", "android/arm", "android/arm64", "android/386",
"freebsd/amd64",
"windows/386", "windows/amd64", "windows/arm":
case "darwin/amd64":
default:
t.Skipf("skipping test because buildmode=pie is not supported on %s", platform)
}
t.Run("non-cgo", func(t *testing.T) {
testBuildmodePIE(t, false, true)
})
if canCgo {
switch runtime.GOOS {
case "darwin", "freebsd", "linux", "windows":
t.Run("cgo", func(t *testing.T) {
testBuildmodePIE(t, true, true)
})
}
}
}
func TestWindowsDefaultBuildmodIsPIE(t *testing.T) {
if testing.Short() && testenv.Builder() == "" {
t.Skipf("skipping in -short mode on non-builder")
}
if runtime.GOOS != "windows" {
t.Skip("skipping windows only test")
}
t.Run("non-cgo", func(t *testing.T) {
testBuildmodePIE(t, false, false)
})
if canCgo {
t.Run("cgo", func(t *testing.T) {
testBuildmodePIE(t, true, false)
})
}
}
func testBuildmodePIE(t *testing.T, useCgo, setBuildmodeToPIE bool) {
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
var s string
if useCgo {
s = `import "C";`
}
tg.tempFile("main.go", fmt.Sprintf(`package main;%s func main() { print("hello") }`, s))
src := tg.path("main.go")
obj := tg.path("main.exe")
args := []string{"build"}
if setBuildmodeToPIE {
args = append(args, "-buildmode=pie")
}
args = append(args, "-o", obj, src)
tg.run(args...)
switch runtime.GOOS {
case "linux", "android", "freebsd":
f, err := elf.Open(obj)
if err != nil {
t.Fatal(err)
}
defer f.Close()
if f.Type != elf.ET_DYN {
t.Errorf("PIE type must be ET_DYN, but %s", f.Type)
}
case "darwin":
f, err := macho.Open(obj)
if err != nil {
t.Fatal(err)
}
defer f.Close()
if f.Flags&macho.FlagDyldLink == 0 {
t.Error("PIE must have DyldLink flag, but not")
}
if f.Flags&macho.FlagPIE == 0 {
t.Error("PIE must have PIE flag, but not")
}
case "windows":
f, err := pe.Open(obj)
if err != nil {
t.Fatal(err)
}
defer f.Close()
if f.Section(".reloc") == nil {
t.Error(".reloc section is not present")
}
if (f.FileHeader.Characteristics & pe.IMAGE_FILE_RELOCS_STRIPPED) != 0 {
t.Error("IMAGE_FILE_RELOCS_STRIPPED flag is set")
}
var dc uint16
switch oh := f.OptionalHeader.(type) {
case *pe.OptionalHeader32:
dc = oh.DllCharacteristics
case *pe.OptionalHeader64:
dc = oh.DllCharacteristics
if (dc & pe.IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA) == 0 {
t.Error("IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA flag is not set")
}
default:
t.Fatalf("unexpected optional header type of %T", f.OptionalHeader)
}
if (dc & pe.IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE) == 0 {
t.Error("IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE flag is not set")
}
if useCgo {
// Test that only one symbol is exported (#40795).
// PIE binaries don´t require .edata section but unfortunately
// binutils doesn´t generate a .reloc section unless there is
// at least one symbol exported.
// See https://sourceware.org/bugzilla/show_bug.cgi?id=19011
section := f.Section(".edata")
if section == nil {
t.Skip(".edata section is not present")
}
// TODO: deduplicate this struct from cmd/link/internal/ld/pe.go
type IMAGE_EXPORT_DIRECTORY struct {
_ [2]uint32
_ [2]uint16
_ [2]uint32
NumberOfFunctions uint32
NumberOfNames uint32
_ [3]uint32
}
var e IMAGE_EXPORT_DIRECTORY
if err := binary.Read(section.Open(), binary.LittleEndian, &e); err != nil {
t.Fatalf("binary.Read failed: %v", err)
}
// Only _cgo_dummy_export should be exported
if e.NumberOfFunctions != 1 {
t.Fatalf("got %d exported functions; want 1", e.NumberOfFunctions)
}
if e.NumberOfNames != 1 {
t.Fatalf("got %d exported names; want 1", e.NumberOfNames)
}
}
default:
panic("unreachable")
}
out, err := exec.Command(obj).CombinedOutput()
if err != nil {
t.Fatal(err)
}
if string(out) != "hello" {
t.Errorf("got %q; want %q", out, "hello")
}
}
func TestUpxCompression(t *testing.T) {
if runtime.GOOS != "linux" ||
(runtime.GOARCH != "amd64" && runtime.GOARCH != "386") {
t.Skipf("skipping upx test on %s/%s", runtime.GOOS, runtime.GOARCH)
}
testenv.MustHaveExecPath(t, "upx")
out, err := exec.Command("upx", "--version").CombinedOutput()
if err != nil {
t.Fatalf("upx --version failed: %v", err)
}
// upx --version prints `upx <version>` in the first line of output:
// upx 3.94
// [...]
re := regexp.MustCompile(`([[:digit:]]+)\.([[:digit:]]+)`)
upxVersion := re.FindStringSubmatch(string(out))
if len(upxVersion) != 3 {
t.Fatalf("bad upx version string: %s", upxVersion)
}
major, err1 := strconv.Atoi(upxVersion[1])
minor, err2 := strconv.Atoi(upxVersion[2])
if err1 != nil || err2 != nil {
t.Fatalf("bad upx version string: %s", upxVersion[0])
}
// Anything below 3.94 is known not to work with go binaries
if (major < 3) || (major == 3 && minor < 94) {
t.Skipf("skipping because upx version %v.%v is too old", major, minor)
}
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempFile("main.go", `package main; import "fmt"; func main() { fmt.Print("hello upx") }`)
src := tg.path("main.go")
obj := tg.path("main")
tg.run("build", "-o", obj, src)
out, err = exec.Command("upx", obj).CombinedOutput()
if err != nil {
t.Logf("executing upx\n%s\n", out)
t.Fatalf("upx failed with %v", err)
}
out, err = exec.Command(obj).CombinedOutput()
if err != nil {
t.Logf("%s", out)
t.Fatalf("running compressed go binary failed with error %s", err)
}
if string(out) != "hello upx" {
t.Fatalf("bad output from compressed go binary:\ngot %q; want %q", out, "hello upx")
}
}
func TestCacheListStale(t *testing.T) {
tooSlow(t)
if godebug.Get("gocacheverify") == "1" {
t.Skip("GODEBUG gocacheverify")
}
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.makeTempdir()
tg.setenv("GOCACHE", tg.path("cache"))
tg.tempFile("gopath/src/p/p.go", "package p; import _ \"q\"; func F(){}\n")
tg.tempFile("gopath/src/q/q.go", "package q; func F(){}\n")
tg.tempFile("gopath/src/m/m.go", "package main; import _ \"q\"; func main(){}\n")
tg.setenv("GOPATH", tg.path("gopath"))
tg.run("install", "p", "m")
tg.run("list", "-f={{.ImportPath}} {{.Stale}}", "m", "q", "p")
tg.grepStdout("^m false", "m should not be stale")
tg.grepStdout("^q true", "q should be stale")
tg.grepStdout("^p false", "p should not be stale")
}
func TestCacheCoverage(t *testing.T) {
tooSlow(t)
if godebug.Get("gocacheverify") == "1" {
t.Skip("GODEBUG gocacheverify")
}
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.setenv("GOPATH", filepath.Join(tg.pwd(), "testdata"))
tg.makeTempdir()
tg.setenv("GOCACHE", tg.path("c1"))
tg.run("test", "-cover", "-short", "strings")
tg.run("test", "-cover", "-short", "math", "strings")
}
func TestIssue22588(t *testing.T) {
// Don't get confused by stderr coming from tools.
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
if _, err := os.Stat("/usr/bin/time"); err != nil {
t.Skip(err)
}
tg.run("list", "-f={{.Stale}}", "runtime")
tg.run("list", "-toolexec=/usr/bin/time", "-f={{.Stale}}", "runtime")
tg.grepStdout("false", "incorrectly reported runtime as stale")
}
func TestIssue22531(t *testing.T) {
tooSlow(t)
if godebug.Get("gocacheverify") == "1" {
t.Skip("GODEBUG gocacheverify")
}
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.makeTempdir()
tg.setenv("GOPATH", tg.tempdir)
tg.setenv("GOCACHE", tg.path("cache"))
tg.tempFile("src/m/main.go", "package main /* c1 */; func main() {}\n")
tg.run("install", "-x", "m")
tg.run("list", "-f", "{{.Stale}}", "m")
tg.grepStdout("false", "reported m as stale after install")
tg.run("tool", "buildid", tg.path("bin/m"+exeSuffix))
// The link action ID did not include the full main build ID,
// even though the full main build ID is written into the
// eventual binary. That caused the following install to
// be a no-op, thinking the gofmt binary was up-to-date,
// even though .Stale could see it was not.
tg.tempFile("src/m/main.go", "package main /* c2 */; func main() {}\n")
tg.run("install", "-x", "m")
tg.run("list", "-f", "{{.Stale}}", "m")
tg.grepStdout("false", "reported m as stale after reinstall")
tg.run("tool", "buildid", tg.path("bin/m"+exeSuffix))
}
func TestIssue22596(t *testing.T) {
tooSlow(t)
if godebug.Get("gocacheverify") == "1" {
t.Skip("GODEBUG gocacheverify")
}
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.makeTempdir()
tg.setenv("GOCACHE", tg.path("cache"))
tg.tempFile("gopath1/src/p/p.go", "package p; func F(){}\n")
tg.tempFile("gopath2/src/p/p.go", "package p; func F(){}\n")
tg.setenv("GOPATH", tg.path("gopath1"))
tg.run("list", "-f={{.Target}}", "p")
target1 := strings.TrimSpace(tg.getStdout())
tg.run("install", "p")
tg.wantNotStale("p", "", "p stale after install")
tg.setenv("GOPATH", tg.path("gopath2"))
tg.run("list", "-f={{.Target}}", "p")
target2 := strings.TrimSpace(tg.getStdout())
tg.must(os.MkdirAll(filepath.Dir(target2), 0777))
tg.must(copyFile(target1, target2, 0666))
tg.wantStale("p", "build ID mismatch", "p not stale after copy from gopath1")
tg.run("install", "p")
tg.wantNotStale("p", "", "p stale after install2")
}
func TestTestCache(t *testing.T) {
tooSlow(t)
if godebug.Get("gocacheverify") == "1" {
t.Skip("GODEBUG gocacheverify")
}
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.makeTempdir()
tg.setenv("GOPATH", tg.tempdir)
tg.setenv("GOCACHE", tg.path("cache"))
// The -p=1 in the commands below just makes the -x output easier to read.
t.Log("\n\nINITIAL\n\n")
tg.tempFile("src/p1/p1.go", "package p1\nvar X = 1\n")
tg.tempFile("src/p2/p2.go", "package p2\nimport _ \"p1\"\nvar X = 1\n")
tg.tempFile("src/t/t1/t1_test.go", "package t\nimport \"testing\"\nfunc Test1(*testing.T) {}\n")
tg.tempFile("src/t/t2/t2_test.go", "package t\nimport _ \"p1\"\nimport \"testing\"\nfunc Test2(*testing.T) {}\n")
tg.tempFile("src/t/t3/t3_test.go", "package t\nimport \"p1\"\nimport \"testing\"\nfunc Test3(t *testing.T) {t.Log(p1.X)}\n")
tg.tempFile("src/t/t4/t4_test.go", "package t\nimport \"p2\"\nimport \"testing\"\nfunc Test4(t *testing.T) {t.Log(p2.X)}")
tg.run("test", "-x", "-v", "-short", "t/...")
t.Log("\n\nREPEAT\n\n")
tg.run("test", "-x", "-v", "-short", "t/...")
tg.grepStdout(`ok \tt/t1\t\(cached\)`, "did not cache t1")
tg.grepStdout(`ok \tt/t2\t\(cached\)`, "did not cache t2")
tg.grepStdout(`ok \tt/t3\t\(cached\)`, "did not cache t3")
tg.grepStdout(`ok \tt/t4\t\(cached\)`, "did not cache t4")
tg.grepStderrNot(`[\\/](compile|gccgo) `, "incorrectly ran compiler")
tg.grepStderrNot(`[\\/](link|gccgo) `, "incorrectly ran linker")
tg.grepStderrNot(`p[0-9]\.test`, "incorrectly ran test")
t.Log("\n\nCOMMENT\n\n")
// Changing the program text without affecting the compiled package
// should result in the package being rebuilt but nothing more.
tg.tempFile("src/p1/p1.go", "package p1\nvar X = 01\n")
tg.run("test", "-p=1", "-x", "-v", "-short", "t/...")
tg.grepStdout(`ok \tt/t1\t\(cached\)`, "did not cache t1")
tg.grepStdout(`ok \tt/t2\t\(cached\)`, "did not cache t2")
tg.grepStdout(`ok \tt/t3\t\(cached\)`, "did not cache t3")
tg.grepStdout(`ok \tt/t4\t\(cached\)`, "did not cache t4")
tg.grepStderrNot(`([\\/](compile|gccgo) ).*t[0-9]_test\.go`, "incorrectly ran compiler")
tg.grepStderrNot(`[\\/](link|gccgo) `, "incorrectly ran linker")
tg.grepStderrNot(`t[0-9]\.test.*test\.short`, "incorrectly ran test")
t.Log("\n\nCHANGE\n\n")
// Changing the actual package should have limited effects.
tg.tempFile("src/p1/p1.go", "package p1\nvar X = 02\n")
tg.run("test", "-p=1", "-x", "-v", "-short", "t/...")
// p2 should have been rebuilt.
tg.grepStderr(`([\\/]compile|gccgo).*p2.go`, "did not recompile p2")
// t1 does not import anything, should not have been rebuilt.
tg.grepStderrNot(`([\\/]compile|gccgo).*t1_test.go`, "incorrectly recompiled t1")
tg.grepStderrNot(`([\\/]link|gccgo).*t1_test`, "incorrectly relinked t1_test")
tg.grepStdout(`ok \tt/t1\t\(cached\)`, "did not cache t/t1")
// t2 imports p1 and must be rebuilt and relinked,
// but the change should not have any effect on the test binary,
// so the test should not have been rerun.
tg.grepStderr(`([\\/]compile|gccgo).*t2_test.go`, "did not recompile t2")
tg.grepStderr(`([\\/]link|gccgo).*t2\.test`, "did not relink t2_test")
// This check does not currently work with gccgo, as garbage
// collection of unused variables is not turned on by default.
if runtime.Compiler != "gccgo" {
tg.grepStdout(`ok \tt/t2\t\(cached\)`, "did not cache t/t2")
}
// t3 imports p1, and changing X changes t3's test binary.
tg.grepStderr(`([\\/]compile|gccgo).*t3_test.go`, "did not recompile t3")
tg.grepStderr(`([\\/]link|gccgo).*t3\.test`, "did not relink t3_test")
tg.grepStderr(`t3\.test.*-test.short`, "did not rerun t3_test")
tg.grepStdoutNot(`ok \tt/t3\t\(cached\)`, "reported cached t3_test result")
// t4 imports p2, but p2 did not change, so t4 should be relinked, not recompiled,
// and not rerun.
tg.grepStderrNot(`([\\/]compile|gccgo).*t4_test.go`, "incorrectly recompiled t4")
tg.grepStderr(`([\\/]link|gccgo).*t4\.test`, "did not relink t4_test")
// This check does not currently work with gccgo, as garbage
// collection of unused variables is not turned on by default.
if runtime.Compiler != "gccgo" {
tg.grepStdout(`ok \tt/t4\t\(cached\)`, "did not cache t/t4")
}
}
func TestTestSkipVetAfterFailedBuild(t *testing.T) {
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempFile("x_test.go", `package x
func f() {
return 1
}
`)
tg.runFail("test", tg.path("x_test.go"))
tg.grepStderrNot(`vet`, "vet should be skipped after the failed build")
}
func TestTestVetRebuild(t *testing.T) {
tooSlow(t)
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
// golang.org/issue/23701.
// b_test imports b with augmented method from export_test.go.
// b_test also imports a, which imports b.
// Must not accidentally see un-augmented b propagate through a to b_test.
tg.tempFile("src/a/a.go", `package a
import "b"
type Type struct{}
func (*Type) M() b.T {return 0}
`)
tg.tempFile("src/b/b.go", `package b
type T int
type I interface {M() T}
`)
tg.tempFile("src/b/export_test.go", `package b
func (*T) Method() *T { return nil }
`)
tg.tempFile("src/b/b_test.go", `package b_test
import (
"testing"
"a"
. "b"
)
func TestBroken(t *testing.T) {
x := new(T)
x.Method()
_ = new(a.Type)
}
`)
tg.setenv("GOPATH", tg.path("."))
tg.run("test", "b")
tg.run("vet", "b")
}
func TestInstallDeps(t *testing.T) {
tooSlow(t)
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.makeTempdir()
tg.setenv("GOPATH", tg.tempdir)
tg.tempFile("src/p1/p1.go", "package p1\nvar X = 1\n")
tg.tempFile("src/p2/p2.go", "package p2\nimport _ \"p1\"\n")
tg.tempFile("src/main1/main.go", "package main\nimport _ \"p2\"\nfunc main() {}\n")
tg.run("list", "-f={{.Target}}", "p1")
p1 := strings.TrimSpace(tg.getStdout())
tg.run("list", "-f={{.Target}}", "p2")
p2 := strings.TrimSpace(tg.getStdout())
tg.run("list", "-f={{.Target}}", "main1")
main1 := strings.TrimSpace(tg.getStdout())
tg.run("install", "main1")
tg.mustExist(main1)
tg.mustNotExist(p2)
tg.mustNotExist(p1)
tg.run("install", "p2")
tg.mustExist(p2)
tg.mustNotExist(p1)
// don't let install -i overwrite runtime
tg.wantNotStale("runtime", "", "must be non-stale before install -i")
tg.run("install", "-i", "main1")
tg.mustExist(p1)
tg.must(os.Remove(p1))
tg.run("install", "-i", "p2")
tg.mustExist(p1)
}
// Issue 22986.
func TestImportPath(t *testing.T) {
tooSlow(t)
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempFile("src/a/a.go", `
package main
import (
"log"
p "a/p-1.0"
)
func main() {
if !p.V {
log.Fatal("false")
}
}`)
tg.tempFile("src/a/a_test.go", `
package main_test
import (
p "a/p-1.0"
"testing"
)
func TestV(t *testing.T) {
if !p.V {
t.Fatal("false")
}
}`)
tg.tempFile("src/a/p-1.0/p.go", `
package p
var V = true
func init() {}
`)
tg.setenv("GOPATH", tg.path("."))
tg.run("build", "-o", tg.path("a.exe"), "a")
tg.run("test", "a")
}
func TestBadCommandLines(t *testing.T) {
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempFile("src/x/x.go", "package x\n")
tg.setenv("GOPATH", tg.path("."))
tg.run("build", "x")
tg.tempFile("src/x/@y.go", "package x\n")
tg.runFail("build", "x")
tg.grepStderr("invalid input file name \"@y.go\"", "did not reject @y.go")
tg.must(os.Remove(tg.path("src/x/@y.go")))
tg.tempFile("src/x/-y.go", "package x\n")
tg.runFail("build", "x")
tg.grepStderr("invalid input file name \"-y.go\"", "did not reject -y.go")
tg.must(os.Remove(tg.path("src/x/-y.go")))
if runtime.Compiler == "gccgo" {
tg.runFail("build", "-gccgoflags=all=@x", "x")
} else {
tg.runFail("build", "-gcflags=all=@x", "x")
}
tg.grepStderr("invalid command-line argument @x in command", "did not reject @x during exec")
tg.tempFile("src/@x/x.go", "package x\n")
tg.setenv("GOPATH", tg.path("."))
tg.runFail("build", "@x")
tg.grepStderr("invalid input directory name \"@x\"|can only use path@version syntax with 'go get' and 'go install' in module-aware mode", "did not reject @x directory")
tg.tempFile("src/@x/y/y.go", "package y\n")
tg.setenv("GOPATH", tg.path("."))
tg.runFail("build", "@x/y")
tg.grepStderr("invalid import path \"@x/y\"|can only use path@version syntax with 'go get' and 'go install' in module-aware mode", "did not reject @x/y import path")
tg.tempFile("src/-x/x.go", "package x\n")
tg.setenv("GOPATH", tg.path("."))
tg.runFail("build", "--", "-x")
tg.grepStderr("invalid import path \"-x\"", "did not reject -x import path")
tg.tempFile("src/-x/y/y.go", "package y\n")
tg.setenv("GOPATH", tg.path("."))
tg.runFail("build", "--", "-x/y")
tg.grepStderr("invalid import path \"-x/y\"", "did not reject -x/y import path")
}
func TestTwoPkgConfigs(t *testing.T) {
if !canCgo {
t.Skip("no cgo")
}
if runtime.GOOS == "windows" || runtime.GOOS == "plan9" {
t.Skipf("no shell scripts on %s", runtime.GOOS)
}
tooSlow(t)
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempFile("src/x/a.go", `package x
// #cgo pkg-config: --static a
import "C"
`)
tg.tempFile("src/x/b.go", `package x
// #cgo pkg-config: --static a
import "C"
`)
tg.tempFile("pkg-config.sh", `#!/bin/sh
echo $* >>`+tg.path("pkg-config.out"))
tg.must(os.Chmod(tg.path("pkg-config.sh"), 0755))
tg.setenv("GOPATH", tg.path("."))
tg.setenv("PKG_CONFIG", tg.path("pkg-config.sh"))
tg.run("build", "x")
out, err := os.ReadFile(tg.path("pkg-config.out"))
tg.must(err)
out = bytes.TrimSpace(out)
want := "--cflags --static --static -- a a\n--libs --static --static -- a a"
if !bytes.Equal(out, []byte(want)) {
t.Errorf("got %q want %q", out, want)
}
}
func TestCgoCache(t *testing.T) {
if !canCgo {
t.Skip("no cgo")
}
tooSlow(t)
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempFile("src/x/a.go", `package main
// #ifndef VAL
// #define VAL 0
// #endif
// int val = VAL;
import "C"
import "fmt"
func main() { fmt.Println(C.val) }
`)
tg.setenv("GOPATH", tg.path("."))
exe := tg.path("x.exe")
tg.run("build", "-o", exe, "x")
tg.setenv("CGO_LDFLAGS", "-lnosuchlibraryexists")
tg.runFail("build", "-o", exe, "x")
tg.grepStderr(`nosuchlibraryexists`, "did not run linker with changed CGO_LDFLAGS")
}
// Issue 23982
func TestFilepathUnderCwdFormat(t *testing.T) {
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.run("test", "-x", "-cover", "log")
tg.grepStderrNot(`\.log\.cover\.go`, "-x output should contain correctly formatted filepath under cwd")
}
// Issue 24396.
func TestDontReportRemoveOfEmptyDir(t *testing.T) {
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempFile("src/a/a.go", `package a`)
tg.setenv("GOPATH", tg.path("."))
tg.run("install", "-x", "a")
tg.run("install", "-x", "a")
// The second install should have printed only a WORK= line,
// nothing else.
if bytes.Count(tg.stdout.Bytes(), []byte{'\n'})+bytes.Count(tg.stderr.Bytes(), []byte{'\n'}) > 1 {
t.Error("unnecessary output when installing installed package")
}
}
// Issue 24704.
func TestLinkerTmpDirIsDeleted(t *testing.T) {
skipIfGccgo(t, "gccgo does not use cmd/link")
if !canCgo {
t.Skip("skipping because cgo not enabled")
}
tooSlow(t)
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempFile("a.go", `package main; import "C"; func main() {}`)
tg.run("build", "-ldflags", "-v", "-o", os.DevNull, tg.path("a.go"))
// Find line that has "host link:" in linker output.
stderr := tg.getStderr()
var hostLinkLine string
for _, line := range strings.Split(stderr, "\n") {
if !strings.Contains(line, "host link:") {
continue
}
hostLinkLine = line
break
}
if hostLinkLine == "" {
t.Fatal(`fail to find with "host link:" string in linker output`)
}
// Find parameter, like "/tmp/go-link-408556474/go.o" inside of
// "host link:" line, and extract temp directory /tmp/go-link-408556474
// out of it.
tmpdir := hostLinkLine
i := strings.Index(tmpdir, `go.o"`)
if i == -1 {
t.Fatalf(`fail to find "go.o" in "host link:" line %q`, hostLinkLine)
}
tmpdir = tmpdir[:i-1]
i = strings.LastIndex(tmpdir, `"`)
if i == -1 {
t.Fatalf(`fail to find " in "host link:" line %q`, hostLinkLine)
}
tmpdir = tmpdir[i+1:]
// Verify that temp directory has been removed.
_, err := os.Stat(tmpdir)
if err == nil {
t.Fatalf("temp directory %q has not been removed", tmpdir)
}
if !os.IsNotExist(err) {
t.Fatalf("Stat(%q) returns unexpected error: %v", tmpdir, err)
}
}
// Issue 25093.
func TestCoverpkgTestOnly(t *testing.T) {
skipIfGccgo(t, "gccgo has no cover tool")
tooSlow(t)
tg := testgo(t)
defer tg.cleanup()
tg.parallel()
tg.tempFile("src/a/a.go", `package a
func F(i int) int {
return i*i
}`)
tg.tempFile("src/atest/a_test.go", `
package a_test
import ( "a"; "testing" )
func TestF(t *testing.T) { a.F(2) }
`)
tg.setenv("GOPATH", tg.path("."))
tg.run("test", "-coverpkg=a", "atest")
tg.grepStderrNot("no packages being tested depend on matches", "bad match message")
tg.grepStdout("coverage: 100", "no coverage")
}
// Regression test for golang.org/issue/34499: version command should not crash
// when executed in a deleted directory on Linux.
func TestExecInDeletedDir(t *testing.T) {
switch runtime.GOOS {
case "windows", "plan9",
"aix", // Fails with "device busy".
"solaris", "illumos": // Fails with "invalid argument".
t.Skipf("%v does not support removing the current working directory", runtime.GOOS)
}
tg := testgo(t)
defer tg.cleanup()
wd, err := os.Getwd()
tg.check(err)
tg.makeTempdir()
tg.check(os.Chdir(tg.tempdir))
defer func() { tg.check(os.Chdir(wd)) }()
tg.check(os.Remove(tg.tempdir))
// `go version` should not fail
tg.run("version")
}
// A missing C compiler should not force the net package to be stale.
// Issue 47215.
func TestMissingCC(t *testing.T) {
if !canCgo {
t.Skip("test is only meaningful on systems with cgo")
}
cc := os.Getenv("CC")
if cc == "" {
cc = "gcc"
}
if filepath.IsAbs(cc) {
t.Skipf(`"CC" (%s) is an absolute path`, cc)
}
_, err := exec.LookPath(cc)
if err != nil {
t.Skipf(`"CC" (%s) not on PATH`, cc)
}
tg := testgo(t)
defer tg.cleanup()
netStale, _ := tg.isStale("net")
if netStale {
t.Skip(`skipping test because "net" package is currently stale`)
}
tg.setenv("PATH", "") // No C compiler on PATH.
netStale, _ = tg.isStale("net")
if netStale {
t.Error(`clearing "PATH" causes "net" to be stale`)
}
}
相关信息
相关文章
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
8、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦