Function TestMultiContainerProcesses

runsc/container/multi_container_test.go:1092–1147

(t *testing.T)

}

func TestMultiContainerProcesses(t *testing.T) {
	rootDir, cleanup, err := testutil.SetupRootDir()
	if err != nil {
		t.Fatalf("error creating root dir: %v", err)
	}
	defer cleanup()

	conf := testutil.TestConfig(t)
	conf.RootDir = rootDir

	// Note: use curly braces to keep 'sh' process around. Otherwise, shell
	// will just execve into 'sleep' and both containers will look the
	// same.
	specs, ids := createSpecs(
		sleepCmd,
		[]string{"sh", "-c", "{ sleep 1000; }"})
	containers, cleanup, err := startContainers(conf, specs, ids)
	if err != nil {
		t.Fatalf("error starting containers: %v", err)
	}
	defer cleanup()

	// Check root's container process list doesn't include other containers.
	expectedPL0 := []*control.Process{
		newProcessBuilder().PID(1).Cmd("sleep").Process(),
	}
	if err := waitForProcessList(containers[0], expectedPL0); err != nil {
		t.Errorf("failed to wait for process to start: %v", err)
	}

	// Same for the other container.
	expectedPL1 := []*control.Process{
		newProcessBuilder().PID(2).Cmd("sh").Process(),
		newProcessBuilder().PID(3).PPID(2).Cmd("sleep").Process(),
	}
	if err := waitForProcessList(containers[1], expectedPL1); err != nil {
		t.Errorf("failed to wait for process to start: %v", err)
	}

	// Now exec into the second container and verify it shows up in the container.
	args := &control.ExecArgs{
		Filename: sleepCmd[0],
		Argv:     sleepCmd,
	}
	if _, err := containers[1].Execute(conf, args); err != nil {
		t.Fatalf("error exec'ing: %v", err)
	}
	expectedPL1 = append(expectedPL1, newProcessBuilder().PID(4).Cmd("sleep").Process())
	if err := waitForProcessList(containers[1], expectedPL1); err != nil {
		t.Errorf("failed to wait for process to start: %v", err)
	}
	// Root container should remain unchanged.
	if err := waitForProcessList(containers[0], expectedPL0); err != nil {
		t.Errorf("failed to wait for process to start: %v", err)
	}
}

// TestMultiContainerKillAll checks that all process that belong to a container