| // Copyright 2022 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 testenv_test |
| |
| import ( |
| "internal/platform" |
| "internal/testenv" |
| "os" |
| "path/filepath" |
| "runtime" |
| "strings" |
| "testing" |
| ) |
| |
| func TestGoToolLocation(t *testing.T) { |
| testenv.MustHaveGoBuild(t) |
| |
| var exeSuffix string |
| if runtime.GOOS == "windows" { |
| exeSuffix = ".exe" |
| } |
| |
| // Tests are defined to run within their package source directory, |
| // and this package's source directory is $GOROOT/src/internal/testenv. |
| // The 'go' command is installed at $GOROOT/bin/go, so if the environment |
| // is correct then testenv.GoTool() should be identical to ../../../bin/go. |
| |
| relWant := "../../../bin/go" + exeSuffix |
| absWant, err := filepath.Abs(relWant) |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| wantInfo, err := os.Stat(absWant) |
| if err != nil { |
| t.Fatal(err) |
| } |
| t.Logf("found go tool at %q (%q)", relWant, absWant) |
| |
| goTool, err := testenv.GoTool() |
| if err != nil { |
| t.Fatalf("testenv.GoTool(): %v", err) |
| } |
| t.Logf("testenv.GoTool() = %q", goTool) |
| |
| gotInfo, err := os.Stat(goTool) |
| if err != nil { |
| t.Fatal(err) |
| } |
| if !os.SameFile(wantInfo, gotInfo) { |
| t.Fatalf("%q is not the same file as %q", absWant, goTool) |
| } |
| } |
| |
| func TestHasGoBuild(t *testing.T) { |
| if !testenv.HasGoBuild() { |
| switch runtime.GOOS { |
| case "js", "wasip1": |
| // No exec syscall, so these shouldn't be able to 'go build'. |
| t.Logf("HasGoBuild is false on %s", runtime.GOOS) |
| return |
| } |
| |
| b := testenv.Builder() |
| if b == "" { |
| // We shouldn't make assumptions about what kind of sandbox or build |
| // environment external Go users may be running in. |
| t.Skipf("skipping: 'go build' unavailable") |
| } |
| |
| // Since we control the Go builders, we know which ones ought |
| // to be able to run 'go build'. Check that they can. |
| // |
| // (Note that we don't verify that any builders *can't* run 'go build'. |
| // If a builder starts running 'go build' tests when it shouldn't, |
| // we will presumably find out about it when those tests fail.) |
| switch runtime.GOOS { |
| case "ios": |
| if strings.HasSuffix(b, "-corellium") { |
| // The corellium environment is self-hosting, so it should be able |
| // to build even though real "ios" devices can't exec. |
| } else { |
| // The usual iOS sandbox does not allow the app to start another |
| // process. If we add builders on stock iOS devices, they presumably |
| // will not be able to exec, so we may as well allow that now. |
| t.Logf("HasGoBuild is false on %s", b) |
| return |
| } |
| case "android": |
| if strings.HasSuffix(b, "-emu") && platform.MustLinkExternal(runtime.GOOS, runtime.GOARCH, false) { |
| // As of 2023-05-02, the test environment on the emulated builders is |
| // missing a C linker. |
| t.Logf("HasGoBuild is false on %s", b) |
| return |
| } |
| } |
| |
| if strings.HasSuffix(b, "-noopt") { |
| // The -noopt builder sets GO_GCFLAGS, which causes tests of 'go build' to |
| // be skipped. |
| t.Logf("HasGoBuild is false on %s", b) |
| return |
| } |
| |
| t.Fatalf("HasGoBuild unexpectedly false on %s", b) |
| } |
| |
| t.Logf("HasGoBuild is true; checking consistency with other functions") |
| |
| hasExec := false |
| hasExecGo := false |
| t.Run("MustHaveExec", func(t *testing.T) { |
| testenv.MustHaveExec(t) |
| hasExec = true |
| }) |
| t.Run("MustHaveExecPath", func(t *testing.T) { |
| testenv.MustHaveExecPath(t, "go") |
| hasExecGo = true |
| }) |
| if !hasExec { |
| t.Errorf(`MustHaveExec(t) skipped unexpectedly`) |
| } |
| if !hasExecGo { |
| t.Errorf(`MustHaveExecPath(t, "go") skipped unexpectedly`) |
| } |
| |
| dir := t.TempDir() |
| mainGo := filepath.Join(dir, "main.go") |
| if err := os.WriteFile(mainGo, []byte("package main\nfunc main() {}\n"), 0644); err != nil { |
| t.Fatal(err) |
| } |
| cmd := testenv.Command(t, "go", "build", "-o", os.DevNull, mainGo) |
| out, err := cmd.CombinedOutput() |
| if err != nil { |
| t.Fatalf("%v: %v\n%s", cmd, err, out) |
| } |
| } |
| |
| func TestMustHaveExec(t *testing.T) { |
| hasExec := false |
| t.Run("MustHaveExec", func(t *testing.T) { |
| testenv.MustHaveExec(t) |
| t.Logf("MustHaveExec did not skip") |
| hasExec = true |
| }) |
| |
| switch runtime.GOOS { |
| case "js", "wasip1": |
| if hasExec { |
| // js and wasip1 lack an “exec” syscall. |
| t.Errorf("expected MustHaveExec to skip on %v", runtime.GOOS) |
| } |
| case "ios": |
| if b := testenv.Builder(); strings.HasSuffix(b, "-corellium") && !hasExec { |
| // Most ios environments can't exec, but the corellium builder can. |
| t.Errorf("expected MustHaveExec not to skip on %v", b) |
| } |
| default: |
| if b := testenv.Builder(); b != "" && !hasExec { |
| t.Errorf("expected MustHaveExec not to skip on %v", b) |
| } |
| } |
| } |