Add test case for network restore

Signed-off-by: Lei Jitang <[email protected]>

integration-cli/docker_cli_network_unix_test.go

@@ -1539,3 +1539,67 @@ func (s *DockerNetworkSuite) TestDockerNetworkCreateDeleteSpecialCharacters(c *c
 	dockerCmd(c, "network", "rm", "kiwl$%^")
 	assertNwNotAvailable(c, "kiwl$%^")
 }
+
+func (s *DockerDaemonSuite) TestDaemonRestartRestoreBridgeNetwork(t *check.C) {
+	testRequires(t, DaemonIsLinux)
+	if err := s.d.StartWithBusybox("--live-restore"); err != nil {
+		t.Fatal(err)
+	}
+	defer s.d.Stop()
+	oldCon := "old"
+
+	_, err := s.d.Cmd("run", "-d", "--name", oldCon, "-p", "80:80", "busybox", "top")
+	if err != nil {
+		t.Fatal(err)
+	}
+	oldContainerIP, err := s.d.Cmd("inspect", "-f", "{{ .NetworkSettings.Networks.bridge.IPAddress }}", oldCon)
+	if err != nil {
+		t.Fatal(err)
+	}
+	// Kill the daemon
+	if err := s.d.Kill(); err != nil {
+		t.Fatal(err)
+	}
+
+	// restart the daemon
+	if err := s.d.Start("--live-restore"); err != nil {
+		t.Fatal(err)
+	}
+
+	// start a new container, the new container's ip should not be the same with
+	// old running container.
+	newCon := "new"
+	_, err = s.d.Cmd("run", "-d", "--name", newCon, "busybox", "top")
+	if err != nil {
+		t.Fatal(err)
+	}
+	newContainerIP, err := s.d.Cmd("inspect", "-f", "{{ .NetworkSettings.Networks.bridge.IPAddress }}", newCon)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if strings.Compare(strings.TrimSpace(oldContainerIP), strings.TrimSpace(newContainerIP)) == 0 {
+		t.Fatalf("new container ip should not equal to old running container  ip")
+	}
+
+	// start a new container, the new container should ping old running container
+	_, err = s.d.Cmd("run", "-t", "busybox", "ping", "-c", "1", oldContainerIP)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// start a new container try to publist port 80:80 will failed
+	out, err := s.d.Cmd("run", "-p", "80:80", "-d", "busybox", "top")
+	if err == nil || !strings.Contains(out, "Bind for 0.0.0.0:80 failed: port is already allocated") {
+		t.Fatalf("80 port is allocated to old running container, it should failed on allocating to new container")
+	}
+
+	// kill old running container and try to allocate again
+	_, err = s.d.Cmd("kill", oldCon)
+	if err != nil {
+		t.Fatal(err)
+	}
+	_, err = s.d.Cmd("run", "-p", "80:80", "-d", "busybox", "top")
+	if err != nil {
+		t.Fatal(err)
+	}
+}