| package docker |
| |
| import ( |
| "bufio" |
| "fmt" |
| "github.com/dotcloud/docker/utils" |
| "io" |
| "io/ioutil" |
| "strings" |
| "testing" |
| "time" |
| ) |
| |
| func closeWrap(args ...io.Closer) error { |
| e := false |
| ret := fmt.Errorf("Error closing elements") |
| for _, c := range args { |
| if err := c.Close(); err != nil { |
| e = true |
| ret = fmt.Errorf("%s\n%s", ret, err) |
| } |
| } |
| if e { |
| return ret |
| } |
| return nil |
| } |
| |
| func setTimeout(t *testing.T, msg string, d time.Duration, f func()) { |
| c := make(chan bool) |
| |
| // Make sure we are not too long |
| go func() { |
| time.Sleep(d) |
| c <- true |
| }() |
| go func() { |
| f() |
| c <- false |
| }() |
| if <-c && msg != "" { |
| t.Fatal(msg) |
| } |
| } |
| |
| func assertPipe(input, output string, r io.Reader, w io.Writer, count int) error { |
| for i := 0; i < count; i++ { |
| if _, err := w.Write([]byte(input)); err != nil { |
| return err |
| } |
| o, err := bufio.NewReader(r).ReadString('\n') |
| if err != nil { |
| return err |
| } |
| if strings.Trim(o, " \r\n") != output { |
| return fmt.Errorf("Unexpected output. Expected [%s], received [%s]", output, o) |
| } |
| } |
| return nil |
| } |
| |
| // TestRunHostname checks that 'docker run -h' correctly sets a custom hostname |
| func TestRunHostname(t *testing.T) { |
| stdout, stdoutPipe := io.Pipe() |
| |
| cli := NewDockerCli(nil, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr) |
| defer cleanup(globalRuntime) |
| |
| c := make(chan struct{}) |
| go func() { |
| defer close(c) |
| if err := cli.CmdRun("-h", "foobar", unitTestImageID, "hostname"); err != nil { |
| t.Fatal(err) |
| } |
| }() |
| |
| setTimeout(t, "Reading command output time out", 2*time.Second, func() { |
| cmdOutput, err := bufio.NewReader(stdout).ReadString('\n') |
| if err != nil { |
| t.Fatal(err) |
| } |
| if cmdOutput != "foobar\n" { |
| t.Fatalf("'hostname' should display '%s', not '%s'", "foobar\n", cmdOutput) |
| } |
| }) |
| |
| setTimeout(t, "CmdRun timed out", 5*time.Second, func() { |
| <-c |
| }) |
| |
| } |
| |
| // TestRunWorkdir checks that 'docker run -w' correctly sets a custom working directory |
| func TestRunWorkdir(t *testing.T) { |
| stdout, stdoutPipe := io.Pipe() |
| |
| cli := NewDockerCli(nil, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr) |
| defer cleanup(globalRuntime) |
| |
| c := make(chan struct{}) |
| go func() { |
| defer close(c) |
| if err := cli.CmdRun("-w", "/foo/bar", unitTestImageID, "pwd"); err != nil { |
| t.Fatal(err) |
| } |
| }() |
| |
| setTimeout(t, "Reading command output time out", 2*time.Second, func() { |
| cmdOutput, err := bufio.NewReader(stdout).ReadString('\n') |
| if err != nil { |
| t.Fatal(err) |
| } |
| if cmdOutput != "/foo/bar\n" { |
| t.Fatalf("'pwd' should display '%s', not '%s'", "/foo/bar\n", cmdOutput) |
| } |
| }) |
| |
| setTimeout(t, "CmdRun timed out", 5*time.Second, func() { |
| <-c |
| }) |
| |
| } |
| |
| // TestRunWorkdirExists checks that 'docker run -w' correctly sets a custom working directory, even if it exists |
| func TestRunWorkdirExists(t *testing.T) { |
| stdout, stdoutPipe := io.Pipe() |
| |
| cli := NewDockerCli(nil, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr) |
| defer cleanup(globalRuntime) |
| |
| c := make(chan struct{}) |
| go func() { |
| defer close(c) |
| if err := cli.CmdRun("-w", "/proc", unitTestImageID, "pwd"); err != nil { |
| t.Fatal(err) |
| } |
| }() |
| |
| setTimeout(t, "Reading command output time out", 2*time.Second, func() { |
| cmdOutput, err := bufio.NewReader(stdout).ReadString('\n') |
| if err != nil { |
| t.Fatal(err) |
| } |
| if cmdOutput != "/proc\n" { |
| t.Fatalf("'pwd' should display '%s', not '%s'", "/proc\n", cmdOutput) |
| } |
| }) |
| |
| setTimeout(t, "CmdRun timed out", 5*time.Second, func() { |
| <-c |
| }) |
| |
| } |
| |
| func TestRunExit(t *testing.T) { |
| stdin, stdinPipe := io.Pipe() |
| stdout, stdoutPipe := io.Pipe() |
| |
| cli := NewDockerCli(stdin, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr) |
| defer cleanup(globalRuntime) |
| |
| c1 := make(chan struct{}) |
| go func() { |
| cli.CmdRun("-i", unitTestImageID, "/bin/cat") |
| close(c1) |
| }() |
| |
| setTimeout(t, "Read/Write assertion timed out", 2*time.Second, func() { |
| if err := assertPipe("hello\n", "hello", stdout, stdinPipe, 15); err != nil { |
| t.Fatal(err) |
| } |
| }) |
| |
| container := globalRuntime.List()[0] |
| |
| // Closing /bin/cat stdin, expect it to exit |
| if err := stdin.Close(); err != nil { |
| t.Fatal(err) |
| } |
| |
| // as the process exited, CmdRun must finish and unblock. Wait for it |
| setTimeout(t, "Waiting for CmdRun timed out", 10*time.Second, func() { |
| <-c1 |
| |
| go func() { |
| cli.CmdWait(container.ID) |
| }() |
| |
| if _, err := bufio.NewReader(stdout).ReadString('\n'); err != nil { |
| t.Fatal(err) |
| } |
| }) |
| |
| // Make sure that the client has been disconnected |
| setTimeout(t, "The client should have been disconnected once the remote process exited.", 2*time.Second, func() { |
| // Expecting pipe i/o error, just check that read does not block |
| stdin.Read([]byte{}) |
| }) |
| |
| // Cleanup pipes |
| if err := closeWrap(stdin, stdinPipe, stdout, stdoutPipe); err != nil { |
| t.Fatal(err) |
| } |
| } |
| |
| // Expected behaviour: the process dies when the client disconnects |
| func TestRunDisconnect(t *testing.T) { |
| |
| stdin, stdinPipe := io.Pipe() |
| stdout, stdoutPipe := io.Pipe() |
| |
| cli := NewDockerCli(stdin, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr) |
| defer cleanup(globalRuntime) |
| |
| c1 := make(chan struct{}) |
| go func() { |
| // We're simulating a disconnect so the return value doesn't matter. What matters is the |
| // fact that CmdRun returns. |
| cli.CmdRun("-i", unitTestImageID, "/bin/cat") |
| close(c1) |
| }() |
| |
| setTimeout(t, "Read/Write assertion timed out", 2*time.Second, func() { |
| if err := assertPipe("hello\n", "hello", stdout, stdinPipe, 15); err != nil { |
| t.Fatal(err) |
| } |
| }) |
| |
| // Close pipes (simulate disconnect) |
| if err := closeWrap(stdin, stdinPipe, stdout, stdoutPipe); err != nil { |
| t.Fatal(err) |
| } |
| |
| // as the pipes are close, we expect the process to die, |
| // therefore CmdRun to unblock. Wait for CmdRun |
| setTimeout(t, "Waiting for CmdRun timed out", 2*time.Second, func() { |
| <-c1 |
| }) |
| |
| // Client disconnect after run -i should cause stdin to be closed, which should |
| // cause /bin/cat to exit. |
| setTimeout(t, "Waiting for /bin/cat to exit timed out", 2*time.Second, func() { |
| container := globalRuntime.List()[0] |
| container.Wait() |
| if container.State.Running { |
| t.Fatalf("/bin/cat is still running after closing stdin") |
| } |
| }) |
| } |
| |
| // Expected behaviour: the process dies when the client disconnects |
| func TestRunDisconnectTty(t *testing.T) { |
| |
| stdin, stdinPipe := io.Pipe() |
| stdout, stdoutPipe := io.Pipe() |
| |
| cli := NewDockerCli(stdin, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr) |
| defer cleanup(globalRuntime) |
| |
| c1 := make(chan struct{}) |
| go func() { |
| // We're simulating a disconnect so the return value doesn't matter. What matters is the |
| // fact that CmdRun returns. |
| if err := cli.CmdRun("-i", "-t", unitTestImageID, "/bin/cat"); err != nil { |
| utils.Debugf("Error CmdRun: %s\n", err) |
| } |
| |
| close(c1) |
| }() |
| |
| setTimeout(t, "Waiting for the container to be started timed out", 10*time.Second, func() { |
| for { |
| // Client disconnect after run -i should keep stdin out in TTY mode |
| l := globalRuntime.List() |
| if len(l) == 1 && l[0].State.Running { |
| break |
| } |
| time.Sleep(10 * time.Millisecond) |
| } |
| }) |
| |
| // Client disconnect after run -i should keep stdin out in TTY mode |
| container := globalRuntime.List()[0] |
| |
| setTimeout(t, "Read/Write assertion timed out", 2000*time.Second, func() { |
| if err := assertPipe("hello\n", "hello", stdout, stdinPipe, 15); err != nil { |
| t.Fatal(err) |
| } |
| }) |
| |
| // Close pipes (simulate disconnect) |
| if err := closeWrap(stdin, stdinPipe, stdout, stdoutPipe); err != nil { |
| t.Fatal(err) |
| } |
| |
| // In tty mode, we expect the process to stay alive even after client's stdin closes. |
| // Do not wait for run to finish |
| |
| // Give some time to monitor to do his thing |
| container.WaitTimeout(500 * time.Millisecond) |
| if !container.State.Running { |
| t.Fatalf("/bin/cat should still be running after closing stdin (tty mode)") |
| } |
| } |
| |
| // TestAttachStdin checks attaching to stdin without stdout and stderr. |
| // 'docker run -i -a stdin' should sends the client's stdin to the command, |
| // then detach from it and print the container id. |
| func TestRunAttachStdin(t *testing.T) { |
| |
| stdin, stdinPipe := io.Pipe() |
| stdout, stdoutPipe := io.Pipe() |
| |
| cli := NewDockerCli(stdin, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr) |
| defer cleanup(globalRuntime) |
| |
| ch := make(chan struct{}) |
| go func() { |
| defer close(ch) |
| cli.CmdRun("-i", "-a", "stdin", unitTestImageID, "sh", "-c", "echo hello && cat && sleep 5") |
| }() |
| |
| // Send input to the command, close stdin |
| setTimeout(t, "Write timed out", 10*time.Second, func() { |
| if _, err := stdinPipe.Write([]byte("hi there\n")); err != nil { |
| t.Fatal(err) |
| } |
| if err := stdinPipe.Close(); err != nil { |
| t.Fatal(err) |
| } |
| }) |
| |
| container := globalRuntime.List()[0] |
| |
| // Check output |
| setTimeout(t, "Reading command output time out", 10*time.Second, func() { |
| cmdOutput, err := bufio.NewReader(stdout).ReadString('\n') |
| if err != nil { |
| t.Fatal(err) |
| } |
| if cmdOutput != container.ShortID()+"\n" { |
| t.Fatalf("Wrong output: should be '%s', not '%s'\n", container.ShortID()+"\n", cmdOutput) |
| } |
| }) |
| |
| // wait for CmdRun to return |
| setTimeout(t, "Waiting for CmdRun timed out", 5*time.Second, func() { |
| <-ch |
| }) |
| |
| setTimeout(t, "Waiting for command to exit timed out", 10*time.Second, func() { |
| container.Wait() |
| }) |
| |
| // Check logs |
| if cmdLogs, err := container.ReadLog("json"); err != nil { |
| t.Fatal(err) |
| } else { |
| if output, err := ioutil.ReadAll(cmdLogs); err != nil { |
| t.Fatal(err) |
| } else { |
| expectedLogs := []string{"{\"log\":\"hello\\n\",\"stream\":\"stdout\"", "{\"log\":\"hi there\\n\",\"stream\":\"stdout\""} |
| for _, expectedLog := range expectedLogs { |
| if !strings.Contains(string(output), expectedLog) { |
| t.Fatalf("Unexpected logs: should contains '%s', it is not '%s'\n", expectedLog, output) |
| } |
| } |
| } |
| } |
| } |
| |
| // Expected behaviour, the process stays alive when the client disconnects |
| func TestAttachDisconnect(t *testing.T) { |
| stdin, stdinPipe := io.Pipe() |
| stdout, stdoutPipe := io.Pipe() |
| |
| cli := NewDockerCli(stdin, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr) |
| defer cleanup(globalRuntime) |
| |
| go func() { |
| // Start a process in daemon mode |
| if err := cli.CmdRun("-d", "-i", unitTestImageID, "/bin/cat"); err != nil { |
| utils.Debugf("Error CmdRun: %s\n", err) |
| } |
| }() |
| |
| setTimeout(t, "Waiting for CmdRun timed out", 10*time.Second, func() { |
| if _, err := bufio.NewReader(stdout).ReadString('\n'); err != nil { |
| t.Fatal(err) |
| } |
| }) |
| |
| setTimeout(t, "Waiting for the container to be started timed out", 10*time.Second, func() { |
| for { |
| l := globalRuntime.List() |
| if len(l) == 1 && l[0].State.Running { |
| break |
| } |
| time.Sleep(10 * time.Millisecond) |
| } |
| }) |
| |
| container := globalRuntime.List()[0] |
| |
| // Attach to it |
| c1 := make(chan struct{}) |
| go func() { |
| // We're simulating a disconnect so the return value doesn't matter. What matters is the |
| // fact that CmdAttach returns. |
| cli.CmdAttach(container.ID) |
| close(c1) |
| }() |
| |
| setTimeout(t, "First read/write assertion timed out", 2*time.Second, func() { |
| if err := assertPipe("hello\n", "hello", stdout, stdinPipe, 15); err != nil { |
| t.Fatal(err) |
| } |
| }) |
| // Close pipes (client disconnects) |
| if err := closeWrap(stdin, stdinPipe, stdout, stdoutPipe); err != nil { |
| t.Fatal(err) |
| } |
| |
| // Wait for attach to finish, the client disconnected, therefore, Attach finished his job |
| setTimeout(t, "Waiting for CmdAttach timed out", 2*time.Second, func() { |
| <-c1 |
| }) |
| |
| // We closed stdin, expect /bin/cat to still be running |
| // Wait a little bit to make sure container.monitor() did his thing |
| err := container.WaitTimeout(500 * time.Millisecond) |
| if err == nil || !container.State.Running { |
| t.Fatalf("/bin/cat is not running after closing stdin") |
| } |
| |
| // Try to avoid the timeout in destroy. Best effort, don't check error |
| cStdin, _ := container.StdinPipe() |
| cStdin.Close() |
| container.Wait() |
| } |