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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"
"flag"
"fmt"
"io"
"io/ioutil"
"net/http"
"os"
"os/exec"
"path/filepath"
"regexp"
"runtime"
"strings"
"testing"
"time"
)
var (
regenerate = flag.Bool("regenerate", false, "regenerate files")
protobufVersion = "3.7.0"
golangVersions = []string{"1.9.7", "1.10.8", "1.11.5", "1.12"}
golangLatest = golangVersions[len(golangVersions)-1]
// purgeTimeout determines the maximum age of unused sub-directories.
purgeTimeout = 30 * 24 * time.Hour // 1 month
// Variables initialized by mustInitDeps.
goPath string
modulePath string
)
func Test(t *testing.T) {
mustInitDeps(t)
if *regenerate {
t.Run("Generate", func(t *testing.T) {
fmt.Print(mustRunCommand(t, ".", "go", "run", "./internal/cmd/generate-types", "-execute"))
fmt.Print(mustRunCommand(t, ".", "go", "run", "./internal/cmd/generate-protos", "-execute"))
files := strings.Split(strings.TrimSpace(mustRunCommand(t, ".", "git", "ls-files", "*.go")), "\n")
mustRunCommand(t, ".", append([]string{"gofmt", "-w"}, files...)...)
})
t.SkipNow()
}
for _, v := range golangVersions {
t.Run("Go"+v, func(t *testing.T) {
runGo := func(label, workDir string, args ...string) {
args[0] += v
t.Run(label, func(t *testing.T) {
t.Parallel()
mustRunCommand(t, workDir, args...)
})
}
workDir := filepath.Join(goPath, "src", modulePath)
runGo("Build", workDir, "go", "build", "./...")
runGo("TestNormal", workDir, "go", "test", "-race", "./...")
runGo("TestPureGo", workDir, "go", "test", "-race", "-tags", "purego", "./...")
if v == golangLatest {
runGo("TestProto1Legacy", workDir, "go", "test", "-race", "-tags", "proto1_legacy", "./...")
runGo("TestProtocGenGo", "cmd/protoc-gen-go/testdata", "go", "test")
runGo("TestProtocGenGoGRPC", "cmd/protoc-gen-go-grpc/testdata", "go", "test")
}
})
}
t.Run("GeneratedGoFiles", func(t *testing.T) {
diff := mustRunCommand(t, ".", "go", "run", "./internal/cmd/generate-types")
if strings.TrimSpace(diff) != "" {
t.Fatalf("stale generated files:\n%v", diff)
}
diff = mustRunCommand(t, ".", "go", "run", "./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("CommittedGitChanges", func(t *testing.T) {
diff := mustRunCommand(t, ".", "git", "diff", "--no-prefix", "HEAD")
if strings.TrimSpace(diff) != "" {
t.Fatalf("uncommitted changes:\n%v", diff)
}
})
t.Run("TrackedGitFiles", func(t *testing.T) {
diff := mustRunCommand(t, ".", "git", "ls-files", "--others", "--exclude-standard")
if strings.TrimSpace(diff) != "" {
t.Fatalf("untracked files:\n%v", diff)
}
})
}
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, "gocache": 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)
if _, err := os.Stat(workingDir); err != nil {
fmt.Printf("download %v\n", filepath.Base(workingDir))
url := fmt.Sprintf("https://github.com/google/protobuf/releases/download/v%v/protobuf-all-%v.tar.gz", protobufVersion, protobufVersion)
downloadArchive(check, workingDir, url, "protobuf-"+protobufVersion)
fmt.Printf("build %v\n", filepath.Base(workingDir))
mustRunCommand(t, workingDir, "./autogen.sh")
mustRunCommand(t, workingDir, "./configure")
mustRunCommand(t, workingDir, "make")
mustRunCommand(t, filepath.Join(workingDir, "conformance"), "make")
}
patchProtos(check, workingDir)
check(os.Setenv("PROTOBUF_ROOT", workingDir)) // for generate-protos
registerBinary("conform-test-runner", filepath.Join(workingDir, "conformance", "conformance-test-runner"))
registerBinary("protoc", filepath.Join(workingDir, "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")
}
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 = ""
// 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 within the test directory.
check(os.Setenv("GOCACHE", filepath.Join(testDir, "gocache")))
// Setup GOPATH for pre-module support (i.e., go1.10 and earlier).
goPath = filepath.Join(testDir, "gopath")
modulePath = strings.TrimSpace(mustRunCommand(t, testDir, "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)))
mustRunCommand(t, repoRoot, "go", "mod", "tidy")
mustRunCommand(t, repoRoot, "go", "mod", "vendor")
check(os.Setenv("GOPATH", goPath))
}
func downloadArchive(check func(error), dstPath, srcURL, skipPrefix string) {
check(os.RemoveAll(dstPath))
resp, err := http.Get(srcURL)
check(err)
defer resp.Body.Close()
zr, err := gzip.NewReader(resp.Body)
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))
}
}
}
// patchProtos patches proto files with v2 locations of Go packages.
// TODO: Commit these changes upstream.
func patchProtos(check func(error), repoRoot string) {
javaPackageRx := regexp.MustCompile(`^option\s+java_package\s*=\s*".*"\s*;\s*$`)
goPackageRx := regexp.MustCompile(`^option\s+go_package\s*=\s*".*"\s*;\s*$`)
files := map[string]string{
"src/google/protobuf/any.proto": "github.com/golang/protobuf/v2/types/known;known_proto",
"src/google/protobuf/api.proto": "github.com/golang/protobuf/v2/types/known;known_proto",
"src/google/protobuf/duration.proto": "github.com/golang/protobuf/v2/types/known;known_proto",
"src/google/protobuf/empty.proto": "github.com/golang/protobuf/v2/types/known;known_proto",
"src/google/protobuf/field_mask.proto": "github.com/golang/protobuf/v2/types/known;known_proto",
"src/google/protobuf/source_context.proto": "github.com/golang/protobuf/v2/types/known;known_proto",
"src/google/protobuf/struct.proto": "github.com/golang/protobuf/v2/types/known;known_proto",
"src/google/protobuf/timestamp.proto": "github.com/golang/protobuf/v2/types/known;known_proto",
"src/google/protobuf/type.proto": "github.com/golang/protobuf/v2/types/known;known_proto",
"src/google/protobuf/wrappers.proto": "github.com/golang/protobuf/v2/types/known;known_proto",
"src/google/protobuf/descriptor.proto": "github.com/golang/protobuf/v2/types/descriptor;descriptor_proto",
"src/google/protobuf/compiler/plugin.proto": "github.com/golang/protobuf/v2/types/plugin;plugin_proto",
"conformance/conformance.proto": "github.com/golang/protobuf/v2/internal/testprotos/conformance;conformance_proto",
}
for pbpath, gopath := range files {
b, err := ioutil.ReadFile(filepath.Join(repoRoot, pbpath))
check(err)
ss := strings.Split(string(b), "\n")
// Locate java_package and (possible) go_package options.
javaPackageIdx, goPackageIdx := -1, -1
for i, s := range ss {
if javaPackageIdx < 0 && javaPackageRx.MatchString(s) {
javaPackageIdx = i
}
if goPackageIdx < 0 && goPackageRx.MatchString(s) {
goPackageIdx = i
}
}
// Ensure the proto file has the correct go_package option.
opt := `option go_package = "` + gopath + `";`
if goPackageIdx >= 0 {
if ss[goPackageIdx] == opt {
continue // no changes needed
}
ss[goPackageIdx] = opt
} else {
// Insert go_package option before java_package option.
ss = append(ss[:javaPackageIdx], append([]string{opt}, ss[javaPackageIdx:]...)...)
}
fmt.Println("patch " + pbpath)
b = []byte(strings.Join(ss, "\n"))
check(ioutil.WriteFile(filepath.Join(repoRoot, pbpath), b, 0664))
}
}
func mustRunCommand(t *testing.T, dir string, args ...string) string {
t.Helper()
stdout := new(bytes.Buffer)
stderr := new(bytes.Buffer)
cmd := exec.Command(args[0], args[1:]...)
cmd.Dir = dir
cmd.Env = append(os.Environ(), "PWD="+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()
}