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// 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.
// +build ignore
package main
import (
"archive/tar"
"bytes"
"compress/gzip"
"crypto/sha256"
"flag"
"fmt"
"io"
"io/ioutil"
"net/http"
"os"
"os/exec"
"path/filepath"
"regexp"
"runtime"
"strings"
"sync"
"testing"
"time"
"google.golang.org/protobuf/internal/version"
)
var (
regenerate = flag.Bool("regenerate", false, "regenerate files")
buildRelease = flag.Bool("buildRelease", false, "build release binaries")
protobufVersion = "ef7cc811" // v3.12.0-rc1
protobufSHA256 = "" // ignored if protobufVersion is a git hash
golangVersions = []string{"1.9.7", "1.10.8", "1.11.13", "1.12.17", "1.13.12", "1.14.4"}
golangLatest = golangVersions[len(golangVersions)-1]
staticcheckVersion = "2020.1.4"
staticcheckSHA256s = map[string]string{
"darwin/386": "05ccb332a0c5ba812af165b0e69ffe317cb3e8bb10b0f4b4c4eaaf956ba9a50b",
"darwin/amd64": "5706d101426c025e8f165309e0cb2932e54809eb035ff23ebe19df0f810699d8",
"linux/386": "e4dbf94e940678ae7108f0d22c7c2992339bc10a8fb384e7e734b1531a429a1c",
"linux/amd64": "09d2c2002236296de2c757df111fe3ae858b89f9e183f645ad01f8135c83c519",
}
// purgeTimeout determines the maximum age of unused sub-directories.
purgeTimeout = 30 * 24 * time.Hour // 1 month
// Variables initialized by mustInitDeps.
goPath string
modulePath string
protobufPath string
)
func Test(t *testing.T) {
mustInitDeps(t)
mustHandleFlags(t)
// Report dirt in the working tree quickly, rather than after
// going through all the presubmits.
//
// Fail the test late, so we can test uncommitted changes with -failfast.
gitDiff := mustRunCommand(t, "git", "diff", "HEAD")
if strings.TrimSpace(gitDiff) != "" {
fmt.Printf("WARNING: working tree contains uncommitted changes:\n%v\n", gitDiff)
}
gitUntracked := mustRunCommand(t, "git", "ls-files", "--others", "--exclude-standard")
if strings.TrimSpace(gitUntracked) != "" {
fmt.Printf("WARNING: working tree contains untracked files:\n%v\n", gitUntracked)
}
// Do the relatively fast checks up-front.
t.Run("GeneratedGoFiles", func(t *testing.T) {
diff := mustRunCommand(t, "go", "run", "-tags", "protolegacy", "./internal/cmd/generate-types")
if strings.TrimSpace(diff) != "" {
t.Fatalf("stale generated files:\n%v", diff)
}
diff = mustRunCommand(t, "go", "run", "-tags", "protolegacy", "./internal/cmd/generate-protos")
if strings.TrimSpace(diff) != "" {
t.Fatalf("stale generated files:\n%v", diff)
}
})
t.Run("FormattedGoFiles", func(t *testing.T) {
files := strings.Split(strings.TrimSpace(mustRunCommand(t, "git", "ls-files", "*.go")), "\n")
diff := mustRunCommand(t, append([]string{"gofmt", "-d"}, files...)...)
if strings.TrimSpace(diff) != "" {
t.Fatalf("unformatted source files:\n%v", diff)
}
})
t.Run("CopyrightHeaders", func(t *testing.T) {
files := strings.Split(strings.TrimSpace(mustRunCommand(t, "git", "ls-files", "*.go", "*.proto")), "\n")
mustHaveCopyrightHeader(t, files)
})
var wg sync.WaitGroup
sema := make(chan bool, (runtime.NumCPU()+1)/2)
for i := range golangVersions {
goVersion := golangVersions[i]
goLabel := "Go" + goVersion
runGo := func(label, workDir string, args ...string) {
wg.Add(1)
sema <- true
go func() {
defer wg.Done()
defer func() { <-sema }()
t.Run(goLabel+"/"+label, func(t *testing.T) {
args[0] += goVersion
command{Dir: workDir}.mustRun(t, args...)
})
}()
}
workDir := filepath.Join(goPath, "src", modulePath)
runGo("Normal", workDir, "go", "test", "-race", "./...")
runGo("PureGo", workDir, "go", "test", "-race", "-tags", "purego", "./...")
runGo("Reflect", workDir, "go", "test", "-race", "-tags", "protoreflect", "./...")
if goVersion == golangLatest {
runGo("ProtoLegacy", workDir, "go", "test", "-race", "-tags", "protolegacy", "./...")
runGo("ProtocGenGo", "cmd/protoc-gen-go/testdata", "go", "test")
runGo("Conformance", "internal/conformance", "go", "test", "-execute")
}
}
wg.Wait()
t.Run("GoStaticCheck", func(t *testing.T) {
checks := []string{
"all", // start with all checks enabled
"-SA1019", // disable deprecated usage check
"-S*", // disable code simplication checks
"-ST*", // disable coding style checks
"-U*", // disable unused declaration checks
}
out := mustRunCommand(t, "staticcheck", "-checks="+strings.Join(checks, ","), "-fail=none", "./...")
// Filter out findings from certain paths.
var findings []string
for _, finding := range strings.Split(strings.TrimSpace(out), "\n") {
switch {
case strings.HasPrefix(finding, "internal/testprotos/legacy/"):
default:
findings = append(findings, finding)
}
}
if len(findings) > 0 {
t.Fatalf("staticcheck findings:\n%v", strings.Join(findings, "\n"))
}
})
t.Run("CommittedGitChanges", func(t *testing.T) {
if strings.TrimSpace(gitDiff) != "" {
t.Fatalf("uncommitted changes")
}
})
t.Run("TrackedGitFiles", func(t *testing.T) {
if strings.TrimSpace(gitUntracked) != "" {
t.Fatalf("untracked files")
}
})
}
func mustInitDeps(t *testing.T) {
check := func(err error) {
t.Helper()
if err != nil {
t.Fatal(err)
}
}
// Determine the directory to place the test directory.
repoRoot, err := os.Getwd()
check(err)
testDir := filepath.Join(repoRoot, ".cache")
check(os.MkdirAll(testDir, 0775))
// Travis-CI has a hard-coded timeout where it kills the test after
// 10 minutes of a lack of activity on stdout.
// We work around this restriction by periodically printing the timestamp.
ticker := time.NewTicker(5 * time.Minute)
done := make(chan struct{})
go func() {
now := time.Now()
for {
select {
case t := <-ticker.C:
fmt.Printf("\tt=%0.fmin\n", t.Sub(now).Minutes())
case <-done:
return
}
}
}()
defer close(done)
defer ticker.Stop()
// Delete the current directory if non-empty,
// which only occurs if a dependency failed to initialize properly.
var workingDir string
defer func() {
if workingDir != "" {
os.RemoveAll(workingDir) // best-effort
}
}()
// Delete other sub-directories that are no longer relevant.
defer func() {
subDirs := map[string]bool{"bin": true, "gopath": true}
subDirs["protobuf-"+protobufVersion] = true
for _, v := range golangVersions {
subDirs["go"+v] = true
}
now := time.Now()
fis, _ := ioutil.ReadDir(testDir)
for _, fi := range fis {
if subDirs[fi.Name()] {
os.Chtimes(filepath.Join(testDir, fi.Name()), now, now) // best-effort
continue
}
if now.Sub(fi.ModTime()) < purgeTimeout {
continue
}
fmt.Printf("delete %v\n", fi.Name())
os.RemoveAll(filepath.Join(testDir, fi.Name())) // best-effort
}
}()
// The bin directory contains symlinks to each tool by version.
// It is safe to delete this directory and run the test script from scratch.
binPath := filepath.Join(testDir, "bin")
check(os.RemoveAll(binPath))
check(os.Mkdir(binPath, 0775))
check(os.Setenv("PATH", binPath+":"+os.Getenv("PATH")))
registerBinary := func(name, path string) {
check(os.Symlink(path, filepath.Join(binPath, name)))
}
// Download and build the protobuf toolchain.
// We avoid downloading the pre-compiled binaries since they do not contain
// the conformance test runner.
workingDir = filepath.Join(testDir, "protobuf-"+protobufVersion)
protobufPath = workingDir
if _, err := os.Stat(protobufPath); err != nil {
fmt.Printf("download %v\n", filepath.Base(protobufPath))
if isCommit := strings.Trim(protobufVersion, "0123456789abcdef") == ""; isCommit {
command{Dir: testDir}.mustRun(t, "git", "clone", "https://github.com/protocolbuffers/protobuf", "protobuf-"+protobufVersion)
command{Dir: protobufPath}.mustRun(t, "git", "checkout", protobufVersion)
} else {
url := fmt.Sprintf("https://github.com/google/protobuf/releases/download/v%v/protobuf-all-%v.tar.gz", protobufVersion, protobufVersion)
downloadArchive(check, protobufPath, url, "protobuf-"+protobufVersion, protobufSHA256)
}
fmt.Printf("build %v\n", filepath.Base(protobufPath))
command{Dir: protobufPath}.mustRun(t, "./autogen.sh")
command{Dir: protobufPath}.mustRun(t, "./configure")
command{Dir: protobufPath}.mustRun(t, "make")
command{Dir: filepath.Join(protobufPath, "conformance")}.mustRun(t, "make")
}
check(os.Setenv("PROTOBUF_ROOT", protobufPath)) // for generate-protos
registerBinary("conform-test-runner", filepath.Join(protobufPath, "conformance", "conformance-test-runner"))
registerBinary("protoc", filepath.Join(protobufPath, "src", "protoc"))
workingDir = ""
// Download each Go toolchain version.
for _, v := range golangVersions {
workingDir = filepath.Join(testDir, "go"+v)
if _, err := os.Stat(workingDir); err != nil {
fmt.Printf("download %v\n", filepath.Base(workingDir))
url := fmt.Sprintf("https://dl.google.com/go/go%v.%v-%v.tar.gz", v, runtime.GOOS, runtime.GOARCH)
downloadArchive(check, workingDir, url, "go", "") // skip SHA256 check as we fetch over https from a trusted domain
}
registerBinary("go"+v, filepath.Join(workingDir, "bin", "go"))
}
registerBinary("go", filepath.Join(testDir, "go"+golangLatest, "bin", "go"))
registerBinary("gofmt", filepath.Join(testDir, "go"+golangLatest, "bin", "gofmt"))
workingDir = ""
// Download the staticcheck tool.
workingDir = filepath.Join(testDir, "staticcheck-"+staticcheckVersion)
if _, err := os.Stat(workingDir); err != nil {
fmt.Printf("download %v\n", filepath.Base(workingDir))
url := fmt.Sprintf("https://github.com/dominikh/go-tools/releases/download/%v/staticcheck_%v_%v.tar.gz", staticcheckVersion, runtime.GOOS, runtime.GOARCH)
downloadArchive(check, workingDir, url, "staticcheck", staticcheckSHA256s[runtime.GOOS+"/"+runtime.GOARCH])
}
registerBinary("staticcheck", filepath.Join(workingDir, "staticcheck"))
workingDir = ""
// Travis-CI sets GOROOT, which confuses invocations of the Go toolchain.
// Explicitly clear GOROOT, so each toolchain uses their default GOROOT.
check(os.Unsetenv("GOROOT"))
// Set a cache directory outside the test directory.
check(os.Setenv("GOCACHE", filepath.Join(repoRoot, ".gocache")))
// Setup GOPATH for pre-module support (i.e., go1.10 and earlier).
goPath = filepath.Join(testDir, "gopath")
modulePath = strings.TrimSpace(command{Dir: testDir}.mustRun(t, "go", "list", "-m", "-f", "{{.Path}}"))
check(os.RemoveAll(filepath.Join(goPath, "src")))
check(os.MkdirAll(filepath.Join(goPath, "src", filepath.Dir(modulePath)), 0775))
check(os.Symlink(repoRoot, filepath.Join(goPath, "src", modulePath)))
command{Dir: repoRoot}.mustRun(t, "go", "mod", "tidy")
command{Dir: repoRoot}.mustRun(t, "go", "mod", "vendor")
check(os.Setenv("GOPATH", goPath))
}
func downloadFile(check func(error), dstPath, srcURL string) {
resp, err := http.Get(srcURL)
check(err)
defer resp.Body.Close()
check(os.MkdirAll(filepath.Dir(dstPath), 0775))
f, err := os.Create(dstPath)
check(err)
_, err = io.Copy(f, resp.Body)
check(err)
}
func downloadArchive(check func(error), dstPath, srcURL, skipPrefix, wantSHA256 string) {
check(os.RemoveAll(dstPath))
resp, err := http.Get(srcURL)
check(err)
defer resp.Body.Close()
var r io.Reader = resp.Body
if wantSHA256 != "" {
b, err := ioutil.ReadAll(resp.Body)
check(err)
r = bytes.NewReader(b)
if gotSHA256 := fmt.Sprintf("%x", sha256.Sum256(b)); gotSHA256 != wantSHA256 {
check(fmt.Errorf("checksum validation error:\ngot %v\nwant %v", gotSHA256, wantSHA256))
}
}
zr, err := gzip.NewReader(r)
check(err)
tr := tar.NewReader(zr)
for {
h, err := tr.Next()
if err == io.EOF {
return
}
check(err)
// Skip directories or files outside the prefix directory.
if len(skipPrefix) > 0 {
if !strings.HasPrefix(h.Name, skipPrefix) {
continue
}
if len(h.Name) > len(skipPrefix) && h.Name[len(skipPrefix)] != '/' {
continue
}
}
path := strings.TrimPrefix(strings.TrimPrefix(h.Name, skipPrefix), "/")
path = filepath.Join(dstPath, filepath.FromSlash(path))
mode := os.FileMode(h.Mode & 0777)
switch h.Typeflag {
case tar.TypeReg:
b, err := ioutil.ReadAll(tr)
check(err)
check(ioutil.WriteFile(path, b, mode))
case tar.TypeDir:
check(os.Mkdir(path, mode))
}
}
}
func mustHandleFlags(t *testing.T) {
if *regenerate {
t.Run("Generate", func(t *testing.T) {
fmt.Print(mustRunCommand(t, "go", "run", "-tags", "protolegacy", "./internal/cmd/generate-types", "-execute"))
fmt.Print(mustRunCommand(t, "go", "run", "-tags", "protolegacy", "./internal/cmd/generate-protos", "-execute"))
files := strings.Split(strings.TrimSpace(mustRunCommand(t, "git", "ls-files", "*.go")), "\n")
mustRunCommand(t, append([]string{"gofmt", "-w"}, files...)...)
})
}
if *buildRelease {
t.Run("BuildRelease", func(t *testing.T) {
v := version.String()
for _, goos := range []string{"linux", "darwin", "windows"} {
for _, goarch := range []string{"386", "amd64"} {
binPath := filepath.Join("bin", fmt.Sprintf("protoc-gen-go.%v.%v.%v", v, goos, goarch))
// Build the binary.
cmd := command{Env: append(os.Environ(), "GOOS="+goos, "GOARCH="+goarch)}
cmd.mustRun(t, "go", "build", "-trimpath", "-ldflags", "-s -w -buildid=", "-o", binPath, "./cmd/protoc-gen-go")
// Archive and compress the binary.
in, err := ioutil.ReadFile(binPath)
if err != nil {
t.Fatal(err)
}
out := new(bytes.Buffer)
gz, _ := gzip.NewWriterLevel(out, gzip.BestCompression)
gz.Comment = fmt.Sprintf("protoc-gen-go VERSION=%v GOOS=%v GOARCH=%v", v, goos, goarch)
tw := tar.NewWriter(gz)
tw.WriteHeader(&tar.Header{
Name: "protoc-gen-go",
Mode: int64(0775),
Size: int64(len(in)),
})
tw.Write(in)
tw.Close()
gz.Close()
if err := ioutil.WriteFile(binPath+".tar.gz", out.Bytes(), 0664); err != nil {
t.Fatal(err)
}
}
}
})
}
if *regenerate || *buildRelease {
t.SkipNow()
}
}
var copyrightRegex = []*regexp.Regexp{
regexp.MustCompile(`^// Copyright \d\d\d\d 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\.
`),
// Generated .pb.go files from main protobuf repo.
regexp.MustCompile(`^// Protocol Buffers - Google's data interchange format
// Copyright \d\d\d\d Google Inc\. All rights reserved\.
`),
}
func mustHaveCopyrightHeader(t *testing.T, files []string) {
var bad []string
File:
for _, file := range files {
b, err := ioutil.ReadFile(file)
if err != nil {
t.Fatal(err)
}
for _, re := range copyrightRegex {
if loc := re.FindIndex(b); loc != nil && loc[0] == 0 {
continue File
}
}
bad = append(bad, file)
}
if len(bad) > 0 {
t.Fatalf("files with missing/bad copyright headers:\n %v", strings.Join(bad, "\n "))
}
}
type command struct {
Dir string
Env []string
}
func (c command) mustRun(t *testing.T, args ...string) string {
t.Helper()
stdout := new(bytes.Buffer)
stderr := new(bytes.Buffer)
cmd := exec.Command(args[0], args[1:]...)
cmd.Dir = "."
if c.Dir != "" {
cmd.Dir = c.Dir
}
cmd.Env = os.Environ()
if c.Env != nil {
cmd.Env = c.Env
}
cmd.Env = append(cmd.Env, "PWD="+cmd.Dir)
cmd.Stdout = stdout
cmd.Stderr = stderr
if err := cmd.Run(); err != nil {
t.Fatalf("executing (%v): %v\n%s%s", strings.Join(args, " "), err, stdout.String(), stderr.String())
}
return stdout.String()
}
func mustRunCommand(t *testing.T, args ...string) string {
t.Helper()
return command{}.mustRun(t, args...)
}