@Test
  public void testUpgrade() throws Exception {
    initializeOneAgent();

    UpgradeVersions upgradeVersions = new UpgradeVersions("2.0", "2.0");
    Request request =
        Request.Builder.preparePost()
            .setUri(
                coordinatorUriBuilder()
                    .appendPath("/v1/slot/assignment")
                    .addParameter("host", "apple*")
                    .build())
            .setHeader(CONTENT_TYPE, APPLICATION_JSON)
            .setBodyGenerator(jsonBodyGenerator(upgradeVersionsCodec, upgradeVersions))
            .build();
    List<SlotStatusRepresentation> actual =
        httpClient.execute(
            request, createJsonResponseHandler(slotStatusesCodec, Status.OK.getStatusCode()));

    AgentStatus agentStatus = coordinator.getAgentByAgentId(agentId);
    SlotStatus apple1Status = agentStatus.getSlotStatus(apple1SotId);
    SlotStatus apple2Status = agentStatus.getSlotStatus(apple2SlotId);
    SlotStatus bananaStatus = agentStatus.getSlotStatus(bananaSlotId);

    List<SlotStatusRepresentation> expected =
        ImmutableList.of(
            slotStatusRepresentationFactory.create(apple1Status),
            slotStatusRepresentationFactory.create(apple2Status));

    assertEqualsNoOrder(actual, expected);

    assertEquals(apple1Status.getState(), STOPPED);
    assertEquals(apple2Status.getState(), STOPPED);
    assertEquals(bananaStatus.getState(), STOPPED);

    assertEquals(
        apple1Status.getAssignment(),
        upgradeVersions.upgradeAssignment(MOCK_REPO, APPLE_ASSIGNMENT));
    assertEquals(
        apple2Status.getAssignment(),
        upgradeVersions.upgradeAssignment(MOCK_REPO, APPLE_ASSIGNMENT));
    assertEquals(bananaStatus.getAssignment(), BANANA_ASSIGNMENT);
  }
  @Test
  public void testAgentProvision() throws Exception {
    // provision the agent and verify
    String instanceType = "instance-type";
    AgentProvisioningRepresentation agentProvisioningRepresentation =
        new AgentProvisioningRepresentation(
            "agent:config:1", 1, instanceType, null, null, null, null, null);
    Request request =
        Request.Builder.preparePost()
            .setUri(coordinatorUriBuilder().appendPath("/v1/admin/agent").build())
            .setHeader(CONTENT_TYPE, APPLICATION_JSON)
            .setBodyGenerator(
                jsonBodyGenerator(agentProvisioningCodec, agentProvisioningRepresentation))
            .build();
    List<AgentStatusRepresentation> agents =
        httpClient.execute(
            request, createJsonResponseHandler(agentStatusesCodec, Status.OK.getStatusCode()));

    assertEquals(agents.size(), 1);
    String instanceId = agents.get(0).getInstanceId();
    assertNotNull(instanceId);
    String location = agents.get(0).getLocation();
    assertNotNull(location);
    assertEquals(agents.get(0).getInstanceType(), instanceType);
    assertNull(agents.get(0).getAgentId());
    assertNull(agents.get(0).getSelf());
    assertNull(agents.get(0).getExternalUri());
    assertEquals(agents.get(0).getState(), AgentLifecycleState.PROVISIONING);

    // start the agent and verify
    AgentStatus expectedAgentStatus = provisioner.startAgent(instanceId);
    coordinator.updateAllAgentsAndWait();
    assertEquals(coordinator.getAgents().size(), 1);
    assertEquals(coordinator.getAgent(instanceId).getInstanceId(), instanceId);
    assertEquals(coordinator.getAgent(instanceId).getInstanceType(), instanceType);
    assertEquals(coordinator.getAgent(instanceId).getLocation(), location);
    assertEquals(coordinator.getAgent(instanceId).getAgentId(), expectedAgentStatus.getAgentId());
    assertEquals(
        coordinator.getAgent(instanceId).getInternalUri(), expectedAgentStatus.getInternalUri());
    assertEquals(
        coordinator.getAgent(instanceId).getExternalUri(), expectedAgentStatus.getExternalUri());
    assertEquals(coordinator.getAgent(instanceId).getState(), AgentLifecycleState.ONLINE);

    request =
        Request.Builder.prepareGet()
            .setUri(coordinatorUriBuilder().appendPath("/v1/admin/agent").build())
            .build();

    agents =
        httpClient.execute(
            request, createJsonResponseHandler(agentStatusesCodec, Status.OK.getStatusCode()));
    assertEquals(agents.size(), 1);

    AgentStatusRepresentation actual = agents.get(0);
    assertEquals(actual.getInstanceId(), instanceId);
    assertEquals(actual.getInstanceType(), instanceType);
    assertEquals(actual.getLocation(), location);
    assertEquals(actual.getAgentId(), expectedAgentStatus.getAgentId());
    assertEquals(actual.getSelf(), expectedAgentStatus.getInternalUri());
    assertEquals(actual.getExternalUri(), expectedAgentStatus.getExternalUri());
    assertEquals(actual.getState(), AgentLifecycleState.ONLINE);
  }
  @Test
  public void testCoordinatorProvision() throws Exception {
    // provision the coordinator and verify
    String instanceType = "instance-type";
    CoordinatorProvisioningRepresentation coordinatorProvisioningRepresentation =
        new CoordinatorProvisioningRepresentation(
            "coordinator:config:1", 1, instanceType, null, null, null, null, null);
    Request request =
        Request.Builder.preparePost()
            .setUri(coordinatorUriBuilder().appendPath("/v1/admin/coordinator").build())
            .setHeader(CONTENT_TYPE, APPLICATION_JSON)
            .setBodyGenerator(
                jsonBodyGenerator(
                    coordinatorProvisioningCodec, coordinatorProvisioningRepresentation))
            .build();
    List<CoordinatorStatusRepresentation> coordinators =
        httpClient.execute(
            request,
            createJsonResponseHandler(coordinatorStatusesCodec, Status.OK.getStatusCode()));

    assertEquals(coordinators.size(), 1);
    String instanceId = coordinators.get(0).getInstanceId();
    assertNotNull(instanceId);
    String location = coordinators.get(0).getLocation();
    assertNotNull(location);
    assertEquals(coordinators.get(0).getInstanceType(), instanceType);
    assertNull(coordinators.get(0).getCoordinatorId());
    assertNull(coordinators.get(0).getSelf());
    assertNull(coordinators.get(0).getExternalUri());
    assertEquals(coordinators.get(0).getState(), CoordinatorLifecycleState.PROVISIONING);

    // start the coordinator and verify
    CoordinatorStatus expectedCoordinatorStatus = provisioner.startCoordinator(instanceId);
    coordinator.updateAllCoordinatorsAndWait();
    assertEquals(coordinator.getCoordinators().size(), 2);
    assertEquals(coordinator.getCoordinator(instanceId).getInstanceId(), instanceId);
    assertEquals(coordinator.getCoordinator(instanceId).getInstanceType(), instanceType);
    assertEquals(coordinator.getCoordinator(instanceId).getLocation(), location);
    assertEquals(
        coordinator.getCoordinator(instanceId).getCoordinatorId(),
        expectedCoordinatorStatus.getCoordinatorId());
    assertEquals(
        coordinator.getCoordinator(instanceId).getInternalUri(),
        expectedCoordinatorStatus.getInternalUri());
    assertEquals(
        coordinator.getCoordinator(instanceId).getExternalUri(),
        expectedCoordinatorStatus.getExternalUri());
    assertEquals(
        coordinator.getCoordinator(instanceId).getState(), CoordinatorLifecycleState.ONLINE);

    request =
        Request.Builder.prepareGet()
            .setUri(coordinatorUriBuilder().appendPath("/v1/admin/coordinator").build())
            .build();

    coordinators =
        httpClient.execute(
            request,
            createJsonResponseHandler(coordinatorStatusesCodec, Status.OK.getStatusCode()));
    CoordinatorStatusRepresentation actual = getNonMainCoordinator(coordinators);

    assertEquals(actual.getInstanceId(), instanceId);
    assertEquals(actual.getInstanceType(), instanceType);
    assertEquals(actual.getLocation(), location);
    assertEquals(actual.getCoordinatorId(), expectedCoordinatorStatus.getCoordinatorId());
    assertEquals(actual.getSelf(), expectedCoordinatorStatus.getInternalUri());
    assertEquals(actual.getExternalUri(), expectedCoordinatorStatus.getExternalUri());
    assertEquals(actual.getState(), CoordinatorLifecycleState.ONLINE);
  }