func TestStartWithOutput(t *testing.T) {
cwd, err := os.Getwd()
if err != nil {
t.Fatal(err)
}
dir := "Current Directory: " + cwd + "\n"
var out bytes.Buffer
s := runutil.NewSequence(nil, os.Stdin, &out, &out, false, false)
h, err := s.Start("sh", "-c", "echo hello; echo world; sleep 1; echo wakeup; exit 1")
if err != nil {
t.Fatal(err)
}
if err := h.Wait(); err == nil {
t.Fatal("expected an error")
}
if got, want := out.String(), "hello\nworld\nwakeup\n"+dir; got != want {
t.Errorf("got %v, want %v", got, want)
}
out.Reset()
h, err = s.Verbose(false).Capture(&out, &out).Start("sh", "-c", "echo hello; echo world; sleep 1; echo wakeup")
if err != nil {
t.Fatal(err)
}
if err := h.Wait(); err != nil {
t.Fatal(err)
}
if got, want := out.String(), "hello\nworld\nwakeup\n"; got != want {
t.Errorf("got %v, want %v", got, want)
}
}
func TestExists(t *testing.T) {
s := runutil.NewSequence(nil, os.Stdin, os.Stdout, os.Stderr, false, true)
f, err := s.TempFile("", "file-exists")
if err != nil {
t.Fatal(err)
}
name := f.Name()
f.Close()
defer os.RemoveAll(name)
newName := name + "x"
err = s.AssertFileExists(name).Rename(name, newName).Done()
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(newName)
err = s.AssertFileExists(name).Last("exit 1")
if !runutil.IsNotExist(err) {
t.Fatal(err)
}
err = s.AssertFileExists(newName).Last("sh", "-c", "exit 33")
if got, want := err.Error(), "exit status 33"; !strings.Contains(got, want) {
t.Errorf("got %v, does not contain %v", got, want)
}
err = s.AssertDirExists(newName).Last("sh", "-c", "exit 33")
if !runutil.IsNotExist(err) {
t.Fatal(err)
}
dir, err := s.TempDir("", "dir-exists")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
newDir := dir + "x"
err = s.AssertDirExists(dir).Rename(dir, newDir).Done()
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(newDir)
err = s.AssertDirExists(dir).Last("exit 1")
if !runutil.IsNotExist(err) {
t.Fatal(err)
}
err = s.AssertDirExists(newDir).Last("sh", "-c", "exit 33")
if got, want := err.Error(), "exit status 33"; !strings.Contains(got, want) {
t.Errorf("got %v, does not contain %v", got, want)
}
err = s.AssertFileExists(newDir).Last("sh", "-c", "exit 33")
if !runutil.IsNotExist(err) {
t.Fatal(err)
}
}
// NewContext is the Context factory.
func NewContext(opts ContextOpts) *Context {
initOpts(newContextOpts(), &opts)
run := runutil.NewRun(opts.Env, opts.Stdin, opts.Stdout, opts.Stderr, *opts.Color, *opts.DryRun, *opts.Verbose)
seq := runutil.NewSequence(opts.Env, opts.Stdin, opts.Stdout, opts.Stderr, *opts.Color, *opts.DryRun, *opts.Verbose)
start := runutil.NewStart(opts.Env, opts.Stdin, opts.Stdout, opts.Stderr, *opts.Color, *opts.DryRun, *opts.Verbose)
return &Context{
opts: opts,
run: run,
seq: seq,
start: start,
}
}
func TestSequence(t *testing.T) {
seq := runutil.NewSequence(nil, os.Stdin, os.Stdout, os.Stderr, false, false)
if got, want := seq.Run("echo", "a").Done(), error(nil); got != want {
t.Errorf("got %v, want %v", got, want)
}
var out bytes.Buffer
err := seq.
Capture(&out, nil).Run("echo", "hello").
Capture(&out, nil).Run("echo", "world").
Done()
if err != nil {
t.Fatal(err)
}
if got, want := out.String(), "hello\nworld\n"; got != want {
t.Errorf("got %v, want %v", got, want)
}
out.Reset()
env := map[string]string{
"MYTEST": "hi",
"MYTEST2": "there",
}
err = seq.
Capture(&out, nil).Env(env).Run("sh", "-c", "echo $MYTEST").
Env(env).Capture(&out, nil).Run("sh", "-c", "echo $MYTEST2").
Done()
if err != nil {
t.Fatal(err)
}
if got, want := out.String(), "hi\nthere\n"; got != want {
t.Errorf("got %v, want %v", got, want)
}
out.Reset()
err = seq.Run("./bound-to-fail", "fail").Done()
if err == nil {
t.Fatalf("should have experience an error")
}
if got, want := rmLineNumbers(err.Error()), "sequence_test.go:-: Run(\"./bound-to-fail\", \"fail\"): fork/exec ./bound-to-fail: no such file or directory"; got != want {
t.Errorf("got %v, want %v", got, want)
}
err = seq.
Capture(&out, nil).Run("echo", "works, despite previous error").Done()
if err != nil {
t.Fatal(err)
}
if got, want := out.String(), "works, despite previous error\n"; got != want {
t.Errorf("got %v, want %v", got, want)
}
out.Reset()
err = seq.Timeout(time.Second).Run("sleep", "10").Done()
if got, want := rmLineNumbers(err.Error()), "sequence_test.go:-: Run(\"sleep\", \"10\"): command timed out"; got != want {
t.Errorf("got %v, want %v", got, want)
}
}
func TestSequenceEnv(t *testing.T) {
// Make sure env provided at construction time is used.
defaultEnv := map[string]string{"A": "dA", "B": "dB"}
seq := runutil.NewSequence(defaultEnv, os.Stdin, os.Stdout, os.Stderr, false, false)
var out bytes.Buffer
err := seq.Capture(&out, nil).Last("sh", "-c", "echo $A $B")
if err != nil {
t.Fatal(err)
}
if got, want := out.String(), "dA dB\n"; got != want {
t.Errorf("got %v, want %v", got, want)
}
// Make sure we can merge new variables into the one used at
// construnction time.
out.Reset()
err = seq.Env(map[string]string{"A": "nA", "C": "nC"}).
Capture(&out, nil).Last("sh", "-c", "echo $A $B $C")
if err != nil {
t.Fatal(err)
}
if got, want := out.String(), "nA dB nC\n"; got != want {
t.Errorf("got %v, want %v", got, want)
}
// Make sure that Env(...).Env(...) merges correctly
out.Reset()
err = seq.SetEnv(map[string]string{"B": "nB", "D": "nD"}).
Env(map[string]string{"A": "nA", "C": "nC"}).
Capture(&out, nil).Last("sh", "-c", "echo $A $B $C $D")
if err != nil {
t.Fatal(err)
}
if got, want := out.String(), "nA nB nC nD\n"; got != want {
t.Errorf("got %v, want %v", got, want)
}
// Make sure that Env(...).SetEnv(...) results in
// Env essentially being ignored.
out.Reset()
err = seq.Env(map[string]string{"D": "nD"}).
SetEnv(map[string]string{"A": "nA"}).
Capture(&out, nil).Last("sh", "-c", "echo $A $B $C $D")
if err != nil {
t.Fatal(err)
}
if got, want := out.String(), "nA\n"; got != want {
t.Errorf("got %v, want %v", got, want)
}
}
func ExampleSequence() {
seq := runutil.NewSequence(nil, os.Stdin, ioutil.Discard, ioutil.Discard, false, false)
err := seq.
Capture(os.Stdout, nil).Run("echo", "a").
Capture(os.Stdout, nil).Last("echo", "b")
err = seq.
Run("echo", "c").
Run("xxxxxxx").
Capture(os.Stdout, nil).Last("echo", "d")
// Get rid of the line#s in the error output.
fmt.Println(rmLineNumbers(err.Error()))
// Output:
// a
// b
// sequence_test.go:-: Run("xxxxxxx"): exec: "xxxxxxx": executable file not found in $PATH
}
func TestSequenceTerminatingMethod(t *testing.T) {
seq := runutil.NewSequence(nil, os.Stdin, os.Stdout, os.Stderr, false, false)
filename := "./test-file"
fi, err := os.Create(filename)
if err != nil {
t.Fatal(err)
}
defer os.Remove(filename)
data, err := seq.Capture(fi, nil).Run("echo", "aha").ReadFile(filename)
if err != nil {
t.Fatal(err)
}
if got, want := string(data), "aha\n"; got != want {
t.Errorf("got %v, want %v", got, want)
}
}
func TestDirModifier(t *testing.T) {
noError := errors.New("no error")
runner := func(cwd, dir string, ech chan error) {
s := runutil.NewSequence(nil, os.Stdin, os.Stdout, os.Stderr, false, false)
var out bytes.Buffer
parent := filepath.Dir(dir)
if err := os.Chdir(parent); err != nil {
panic(fmt.Sprintf("chdir(%s): %v", parent, err))
}
err := s.Dir(dir).Capture(&out, nil).Last("sh", "-c", "pwd")
pwd := strings.TrimSpace(out.String())
switch {
case err != nil:
ech <- err
case dir != pwd:
ech <- fmt.Errorf("got %v, want %v", pwd, dir)
default:
ech <- noError
}
if err := os.Chdir(cwd); err != nil {
panic(fmt.Sprintf("chdir(%s): %v", cwd, err))
}
}
cwd, _ := os.Getwd()
n := 50
errCh := make(chan error, 10)
for i := 0; i < n; i++ {
dir, err := ioutil.TempDir(cwd, fmt.Sprintf("%d", i))
if err != nil {
t.Fatal(err)
}
go runner(cwd, dir, errCh)
defer os.RemoveAll(dir)
}
for i := 0; i < n; i++ {
err := <-errCh
if err != noError {
t.Errorf("unexpected error: %v", err)
}
}
}
func TestSequencePushPop(t *testing.T) {
here := getwd(t)
s := runutil.NewSequence(nil, os.Stdin, os.Stdout, os.Stderr, false, true)
components := []string{here, "test", "a", "b", "c"}
tree := filepath.Join(components...)
s.MkdirAll(tree, os.FileMode(0755))
if err := s.Error(); err != nil {
t.Fatal(err)
}
defer os.RemoveAll(filepath.Join(here, "test"))
td := ""
for _, d := range components {
s.Pushd(d)
td = filepath.Join(td, d)
if got, want := getwd(t), td; got != want {
t.Errorf("got %v, want %v", got, want)
}
}
s.Done()
if got, want := getwd(t), here; got != want {
t.Errorf("got %v, want %v", got, want)
}
s.Pushd("test").Pushd("a").Pushd("b")
if got, want := getwd(t), filepath.Join(here, "test", "a", "b"); got != want {
t.Errorf("got %v, want %v", got, want)
}
err := s.Pushd("x").Done()
if err == nil {
t.Fatal(fmt.Errorf("expected an error"))
}
// Make sure the stack is unwound on error.
if got, want := getwd(t), here; got != want {
t.Errorf("got %v, want %v", got, want)
if err := os.Chdir(here); err != nil {
panic(fmt.Sprintf("failed to chdir back to %s", here))
}
}
}
// Test that modifiers don't get applied beyond the first invocation of Run.
func TestSequenceModifiers(t *testing.T) {
seq := runutil.NewSequence(nil, os.Stdin, os.Stdout, os.Stderr, false, false)
var out bytes.Buffer
env := map[string]string{
"MYTEST": "hi",
}
err := seq.
Capture(&out, nil).Env(env).Run("sh", "-c", "echo $MYTEST").
Capture(&out, nil).Last("sh", "-c", "echo $MYTEST")
if err != nil {
t.Fatal(err)
}
if got, want := out.String(), "hi\n\n"; got != want {
t.Errorf("got %v, want %v", got, want)
}
out.Reset()
err = seq.
Capture(&out, nil).Run("echo", "hello").
Run("echo", "world").
Done()
if err != nil {
t.Fatal(err)
}
if got, want := out.String(), "hello\n"; got != want {
t.Errorf("got %v, want %v", got, want)
}
out.Reset()
in := bytes.Buffer{}
in.WriteString("Hello\n")
in.WriteString("World\n")
if err := seq.Read(&in).Capture(&out, nil).Last("sh", "-c", "read x; echo $x; read y; echo $y"); err != nil {
t.Fatal(err)
}
if got, want := out.String(), "Hello\nWorld\n"; got != want {
t.Errorf("got %v, want %v", got, want)
}
}
func TestSequenceOutputOnError(t *testing.T) {
var out bytes.Buffer
// Only the output from the command that generates an error is written
// to stderr (i.e. out) when not in verbose mode.
seq := runutil.NewSequence(nil, os.Stdin, os.Stdout, &out, false, false)
err := seq.Run("sh", "-c", "echo not me").
Run("sh", "-c", "echo ooh; echo ah; echo me; exit 1").
Last("sh", "-c", "echo not me either")
if err == nil {
t.Errorf("expected an error")
}
if got, want := out.String(), "oh\nah\nme\n"; !strings.Contains(got, want) {
t.Errorf("got %v doesn't contain %v", got, want)
}
if got, notWant := out.String(), "not me"; strings.Contains(got, notWant) {
t.Errorf("got %v contains %v", got, notWant)
}
out.Reset()
err = seq.Run("sh", "-c", "echo hard to not include me").
Run("sh", "-c", "echo ooh; echo ah; echo me").
Last("sh", "-c", "echo not me either")
if err != nil {
t.Error(err)
}
if got, want := len(out.String()), 0; got != want {
t.Logf(out.String())
t.Errorf("got %v, want %v", got, want)
}
out.Reset()
err = seq.Last("sh", "-c", "echo should see an error; exit 1")
if err == nil {
t.Errorf("expected an error")
}
if got, want := out.String(), "should see an error"; !strings.Contains(got, want) {
t.Errorf("got %v, want %v", got, want)
}
}
func TestStart(t *testing.T) {
s := runutil.NewSequence(nil, os.Stdin, os.Stdout, os.Stderr, false, false)
h, err := s.Start("sh", "-c", "sleep 100")
if err != nil {
t.Fatal(err)
}
pid := h.Pid()
time.Sleep(time.Second)
if err := syscall.Kill(pid, 0); err != nil {
t.Fatal(err)
}
if err := h.Kill(); err != nil {
t.Fatal(err)
}
time.Sleep(time.Second)
if err := h.Wait(); err == nil || (err != nil && err.Error() != "signal: killed") {
t.Fatal(err)
}
time.Sleep(time.Second)
if err := syscall.Kill(pid, 0); err == nil {
t.Fatal("command has not terminated.")
}
}
func TestSequenceStreaming(t *testing.T) {
seq := runutil.NewSequence(nil, os.Stdin, os.Stdout, os.Stderr, false, false)
ts := ×tamped{}
err := seq.
Capture(ts, nil).Last("sh", "-c", `
for i in $(seq 1 5); do
echo $i
sleep 1
done`)
if err != nil {
t.Fatal(err)
}
if got, want := len(ts.data), 5; got != want {
t.Fatalf("got %v, want %v", got, want)
}
prev := ts.times[0]
for _, nth := range ts.times[1:] {
if nth.Sub(prev) < 500*time.Millisecond {
t.Errorf("times %s and %s are too close together", nth, prev)
}
prev = nth
}
}
func TestMoreSequenceModifiers(t *testing.T) {
var stderr, stdout bytes.Buffer
seq := runutil.NewSequence(nil, os.Stdin, &stdout, &stderr, false, false)
for _, verbose := range []bool{false, true} {
err := seq.Verbose(verbose).Last("sh", "-c", "echo hello")
if err != nil {
t.Fatal(err)
}
out := stdout.String()
want := ""
if verbose {
out = sanitizeTimestampsAndPaths(out)
want = `[hh:mm:ss.xx] >> sh -c "echo hello"
[hh:mm:ss.xx] >> OK
hello
`
}
if got, want := out, want; got != want {
t.Errorf("verbose: %t, got %v, want %v", verbose, got, want)
}
stdout.Reset()
}
}
// NewSeq returns a new instance of Sequence initialized using the options
// stored in the context.
func (ctx Context) NewSeq() runutil.Sequence {
return runutil.NewSequence(ctx.opts.Env, ctx.opts.Stdin, ctx.opts.Stdout, ctx.opts.Stderr, *ctx.opts.Color, *ctx.opts.Verbose)
}
// TestStdoutStderr exercises the various possible configurations for stdout and
// stderr (via NewSequence, Opts, or Capture) as well as the verbose flag.
func TestStdoutStderr(t *testing.T) {
cwd, err := os.Getwd()
if err != nil {
t.Fatal(err)
}
dir := "Current Directory: " + cwd
// Case 1: we only specify stdout/stderr at constructor time.
//
// Verbose mode: All the command's output and execution logging goes to
// stdout, execution error messages to stderr.
//
// Non-Verbose mode: No stdout output; execution error messages to
// stderr.
for _, verbose := range []bool{false, true} {
var cnstrStdout, cnstrStderr bytes.Buffer
seq := runutil.NewSequence(nil, os.Stdin, &cnstrStdout, &cnstrStderr, false, verbose)
seq.Run("bash", "-c", "echo a; echo b >&2").
Timeout(time.Microsecond).
Run("sleep", "10000")
wantA, wantB := "", ""
if verbose {
// stdout, stderr output can be interleaved in arbitrary order.
pre := `[hh:mm:ss.xx] >> bash -c "echo a; echo b >&2"
[hh:mm:ss.xx] >> OK`
post := `[hh:mm:ss.xx] >> sleep 10000
[hh:mm:ss.xx] >> TIMED OUT
[hh:mm:ss.xx] >> Waiting for command to exit: ["/bin/sleep" "10000"]
`
wantA = pre + `
a
b
` + post
wantB = pre + `
b
a
` + post
}
if got := sanitizeTimestampsAndPaths(cnstrStdout.String()); got != wantA && got != wantB {
t.Errorf("verbose: %t, got %v, want either %v or %v", verbose, got, wantA, wantB)
}
if got, want := sanitizeTimestampsAndPaths(sanitizePaths(cnstrStderr.String(), "sleep")), sanitizeTimestampsAndPaths("[hh:mm:ss.xx] >> Waiting for command to exit: [\"sleep\" \"10000\"]\n"+dir+"\n"); want != got {
t.Errorf("verbose: %t, got %v, want %v", verbose, got, want)
}
}
// Case 2: we specify stdout/stderr at constructor time, and also via
// Capture.
//
// Verbose mode: The command execution log goes to constructor stdout,
// command execution errors go to constructor stderr, and the
// stdout/stderr output from the command goes to capture stdout/stderr
// respectively.
//
// Non-Verbose mode: The stdout/stderr output from the command goes to
// capture stdout/stderr respectively. No command execution log, but
// the command execution errors go to constructor stderr.
for _, verbose := range []bool{false, true} {
var cnstrStdout, cnstrStderr, captureStdout, captureStderr bytes.Buffer
seq := runutil.NewSequence(nil, os.Stdin, &cnstrStdout, &cnstrStderr, false, verbose)
seq.Capture(&captureStdout, &captureStderr).
Run("bash", "-c", "echo a; echo b >&2").
Timeout(time.Microsecond).
Run("sleep", "10000")
want := ""
if verbose {
want = `[hh:mm:ss.xx] >> bash -c "echo a; echo b >&2"
[hh:mm:ss.xx] >> OK
[hh:mm:ss.xx] >> sleep 10000
[hh:mm:ss.xx] >> TIMED OUT
[hh:mm:ss.xx] >> Waiting for command to exit: ["/bin/sleep" "10000"]
`
}
if got := sanitizeTimestampsAndPaths(cnstrStdout.String()); want != got {
t.Errorf("verbose: %t, got %v, want %v", verbose, got, want)
}
if got, want := sanitizeTimestampsAndPaths(sanitizePaths(cnstrStderr.String(), "sleep")), sanitizeTimestampsAndPaths("[hh:mm:ss.xx] >> Waiting for command to exit: [\"sleep\" \"10000\"]\n"+dir+"\n"); want != got {
t.Errorf("verbose: %t, got %v, want %v", verbose, got, want)
}
if got, want := captureStdout.String(), "a\n"; want != got {
t.Errorf("verbose: %t, got %v, want %v", verbose, got, want)
}
if got, want := captureStderr.String(), "b\n"; want != got {
t.Errorf("verbose: %t, got %v, want %v", verbose, got, want)
}
}
// Case 3: we specify stdout/stderr at constructor and use nil
// with Capture to verify that the constructor values are used.
var cnstrStdout, cnstrStderr, captureStdout, captureStderr bytes.Buffer
seq := runutil.NewSequence(nil, os.Stdin, &cnstrStdout, &cnstrStderr, false, false)
err = seq.
Capture(&captureStdout, nil).Run("bash", "-c", "echo a; echo b >&2").
Capture(nil, &captureStderr).Last("bash", "-c", "echo c; echo d >&2")
if got, want := cnstrStdout.String(), "c\n"; got != want {
t.Errorf("got %v, want %v", got, want)
}
if got, want := cnstrStderr.String(), "b\n"; got != want {
t.Errorf("got %v, want %v", got, want)
}
if got, want := captureStdout.String(), "a\n"; got != want {
t.Errorf("got %v, want %v", got, want)
}
if got, want := captureStderr.String(), "d\n"; got != want {
t.Errorf("got %v, want %v", got, want)
}
}