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package main
import (
"bufio"
"os/exec"
"strings"
"testing"
"time"
)
func TestExec(t *testing.T) {
runCmd := exec.Command(dockerBinary, "run", "-d", "--name", "testing", "busybox", "sh", "-c", "echo test > /tmp/file && sleep 100")
out, _, _, err := runCommandWithStdoutStderr(runCmd)
errorOut(err, t, out)
execCmd := exec.Command(dockerBinary, "exec", "testing", "cat", "/tmp/file")
out, _, err = runCommandWithOutput(execCmd)
errorOut(err, t, out)
out = strings.Trim(out, "\r\n")
if expected := "test"; out != expected {
t.Errorf("container exec should've printed %q but printed %q", expected, out)
}
deleteAllContainers()
logDone("exec - basic test")
}
func TestExecInteractive(t *testing.T) {
runCmd := exec.Command(dockerBinary, "run", "-d", "--name", "testing", "busybox", "sh", "-c", "echo test > /tmp/file && sleep 100")
out, _, _, err := runCommandWithStdoutStderr(runCmd)
errorOut(err, t, out)
execCmd := exec.Command(dockerBinary, "exec", "-i", "testing", "sh")
stdin, err := execCmd.StdinPipe()
if err != nil {
t.Fatal(err)
}
stdout, err := execCmd.StdoutPipe()
if err != nil {
t.Fatal(err)
}
if err := execCmd.Start(); err != nil {
t.Fatal(err)
}
if _, err := stdin.Write([]byte("cat /tmp/file\n")); err != nil {
t.Fatal(err)
}
r := bufio.NewReader(stdout)
line, err := r.ReadString('\n')
if err != nil {
t.Fatal(err)
}
line = strings.TrimSpace(line)
if line != "test" {
t.Fatalf("Output should be 'test', got '%q'", line)
}
if err := stdin.Close(); err != nil {
t.Fatal(err)
}
finish := make(chan struct{})
go func() {
if err := execCmd.Wait(); err != nil {
t.Fatal(err)
}
close(finish)
}()
select {
case <-finish:
case <-time.After(1 * time.Second):
t.Fatal("docker exec failed to exit on stdin close")
}
deleteAllContainers()
logDone("exec - Interactive test")
}
func TestExecAfterContainerRestart(t *testing.T) {
runCmd := exec.Command(dockerBinary, "run", "-d", "busybox", "top")
out, _, err := runCommandWithOutput(runCmd)
errorOut(err, t, out)
cleanedContainerID := stripTrailingCharacters(out)
runCmd = exec.Command(dockerBinary, "restart", cleanedContainerID)
out, _, err = runCommandWithOutput(runCmd)
errorOut(err, t, out)
runCmd = exec.Command(dockerBinary, "exec", cleanedContainerID, "echo", "hello")
out, _, err = runCommandWithOutput(runCmd)
errorOut(err, t, out)
outStr := strings.TrimSpace(out)
if outStr != "hello" {
t.Errorf("container should've printed hello, instead printed %q", outStr)
}
deleteAllContainers()
logDone("exec - exec running container after container restart")
}
func TestExecAfterDaemonRestart(t *testing.T) {
d := NewDaemon(t)
if err := d.StartWithBusybox(); err != nil {
t.Fatalf("Could not start daemon with busybox: %v", err)
}
defer d.Stop()
if out, err := d.Cmd("run", "-d", "--name", "top", "-p", "80", "busybox:latest", "top"); err != nil {
t.Fatalf("Could not run top: err=%v\n%s", err, out)
}
if err := d.Restart(); err != nil {
t.Fatalf("Could not restart daemon: %v", err)
}
if out, err := d.Cmd("start", "top"); err != nil {
t.Fatalf("Could not start top after daemon restart: err=%v\n%s", err, out)
}
out, err := d.Cmd("exec", "top", "echo", "hello")
if err != nil {
t.Fatalf("Could not exec on container top: err=%v\n%s", err, out)
}
outStr := strings.TrimSpace(string(out))
if outStr != "hello" {
t.Errorf("container should've printed hello, instead printed %q", outStr)
}
logDone("exec - exec running container after daemon restart")
}