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98f3d7fecb
CL 294430 made packages in std and cmd modules use Go 1.17 gofmt format, adding //go:build lines. This change applies the same formatting to some more packages that 'go fmt' missed (e.g., syscall/js, runtime/msan), and everything else that is easy and safe to modify in bulk. Consider the top-level test directory, testdata, and vendor directories out of scope, since there are many files that don't follow strict gofmt formatting, often for intentional and legitimate reasons (testing gofmt itself, invalid Go programs that shouldn't crash the compiler, etc.). That makes it easy and safe to gofmt -w the .go files that are found with gofmt -l with aforementioned directories filtered out: $ gofmt -l . 2>/dev/null | \ grep -v '^test/' | \ grep -v '/testdata/' | \ grep -v '/vendor/' | wc -l 51 None of the 51 files are generated. After this change, the same command prints 0. For #41184. Change-Id: Ia96ee2a0f998d6a167d4473bcad17ad09bc1d86e Reviewed-on: https://go-review.googlesource.com/c/go/+/341009 Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Trust: Dmitri Shuralyov <dmitshur@golang.org>
102 lines
3.0 KiB
Go
102 lines
3.0 KiB
Go
// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build explicit
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// +build explicit
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// Package experiment_toolid_test verifies that GOEXPERIMENT settings built
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// into the toolchain influence tool ids in the Go command.
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// This test requires bootstrapping the toolchain twice, so it's very expensive.
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// It must be run explicitly with -tags=explicit.
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// Verifies golang.org/issue/33091.
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package reboot_test
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import (
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"bytes"
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"os"
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"os/exec"
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"path/filepath"
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"runtime"
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"testing"
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)
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func TestExperimentToolID(t *testing.T) {
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// Set up GOROOT
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goroot, err := os.MkdirTemp("", "experiment-goroot")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(goroot)
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gorootSrc := filepath.Join(goroot, "src")
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if err := overlayDir(gorootSrc, filepath.Join(runtime.GOROOT(), "src")); err != nil {
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t.Fatal(err)
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}
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if err := os.WriteFile(filepath.Join(goroot, "VERSION"), []byte("go1.999"), 0666); err != nil {
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t.Fatal(err)
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}
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env := append(os.Environ(), "GOROOT=", "GOROOT_BOOTSTRAP="+runtime.GOROOT())
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// Use a clean cache.
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gocache, err := os.MkdirTemp("", "experiment-gocache")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(gocache)
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env = append(env, "GOCACHE="+gocache)
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// Build the toolchain without GOEXPERIMENT.
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var makeScript string
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switch runtime.GOOS {
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case "windows":
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makeScript = "make.bat"
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case "plan9":
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makeScript = "make.rc"
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default:
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makeScript = "make.bash"
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}
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makeScriptPath := filepath.Join(runtime.GOROOT(), "src", makeScript)
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runCmd(t, gorootSrc, env, makeScriptPath)
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// Verify compiler version string.
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goCmdPath := filepath.Join(goroot, "bin", "go")
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if runtime.GOOS == "windows" {
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goCmdPath += ".exe"
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}
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gotVersion := bytes.TrimSpace(runCmd(t, gorootSrc, env, goCmdPath, "tool", "compile", "-V=full"))
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wantVersion := []byte(`compile version go1.999`)
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if !bytes.Equal(gotVersion, wantVersion) {
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t.Errorf("compile version without experiment: got %q, want %q", gotVersion, wantVersion)
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}
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// Build a package in a mode not handled by the make script.
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runCmd(t, gorootSrc, env, goCmdPath, "build", "-race", "archive/tar")
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// Rebuild the toolchain with GOEXPERIMENT.
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env = append(env, "GOEXPERIMENT=fieldtrack")
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runCmd(t, gorootSrc, env, makeScriptPath)
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// Verify compiler version string.
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gotVersion = bytes.TrimSpace(runCmd(t, gorootSrc, env, goCmdPath, "tool", "compile", "-V=full"))
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wantVersion = []byte(`compile version go1.999 X:fieldtrack,framepointer`)
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if !bytes.Equal(gotVersion, wantVersion) {
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t.Errorf("compile version with experiment: got %q, want %q", gotVersion, wantVersion)
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}
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// Build the same package. We should not get a cache conflict.
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runCmd(t, gorootSrc, env, goCmdPath, "build", "-race", "archive/tar")
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}
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func runCmd(t *testing.T, dir string, env []string, path string, args ...string) []byte {
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cmd := exec.Command(path, args...)
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cmd.Dir = dir
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cmd.Env = env
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out, err := cmd.Output()
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if err != nil {
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t.Fatal(err)
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}
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return out
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}
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