blob: 26c50ad883f643b74ef69c54324e5e6219f49221 [file] [log] [blame]
// Copyright 2019 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 cgotest
import (
// TestCrossPackageTests compiles and runs tests that depend on imports of other
// local packages, using source code stored in the testdata directory.
// The tests in the misc directory tree do not have a valid import path in
// GOPATH mode, so they previously used relative imports. However, relative
// imports do not work in module mode. In order to make the test work in both
// modes, we synthesize a GOPATH in which the module paths are equivalent, and
// run the tests as a subprocess.
// If and when we no longer support these tests in GOPATH mode, we can remove
// this shim and move the tests currently located in testdata back into the
// parent directory.
func TestCrossPackageTests(t *testing.T) {
switch runtime.GOOS {
case "android":
t.Skip("Can't exec cmd/go subprocess on Android.")
case "darwin":
switch runtime.GOARCH {
case "arm64":
t.Skip("Can't exec cmd/go subprocess on iOS.")
GOPATH, err := ioutil.TempDir("", "cgotest")
if err != nil {
defer os.RemoveAll(GOPATH)
modRoot := filepath.Join(GOPATH, "src", "cgotest")
if err := overlayDir(modRoot, "testdata"); err != nil {
if err := ioutil.WriteFile(filepath.Join(modRoot, "go.mod"), []byte("module cgotest\n"), 0666); err != nil {
cmd := exec.Command("go", "test")
if testing.Verbose() {
cmd.Args = append(cmd.Args, "-v")
if testing.Short() {
cmd.Args = append(cmd.Args, "-short")
cmd.Dir = modRoot
cmd.Env = append(os.Environ(), "GOPATH="+GOPATH, "PWD="+cmd.Dir)
out, err := cmd.CombinedOutput()
if err == nil {
t.Logf("%s:\n%s", strings.Join(cmd.Args, " "), out)
} else {
t.Fatalf("%s: %s\n%s", strings.Join(cmd.Args, " "), err, out)