@Test
  public void shouldCancelBuildsForDeletedJobsWhenPipelineConfigChanges() throws Exception {
    fixture = new PipelineWithTwoStages(materialRepository, transactionTemplate).usingTwoJobs();
    fixture.usingConfigHelper(configHelper).usingDbHelper(dbHelper).onSetUp();
    fixture.createPipelineWithFirstStageScheduled();

    buildAssignmentService.onTimer();
    configHelper.removeJob(fixture.pipelineName, fixture.devStage, fixture.JOB_FOR_DEV_STAGE);

    buildAssignmentService.onPipelineConfigChange(
        goConfigService
            .getCurrentConfig()
            .getPipelineConfigByName(new CaseInsensitiveString(fixture.pipelineName)),
        "g1");

    Pipeline pipeline = pipelineDao.mostRecentPipeline(fixture.pipelineName);
    JobInstance deletedJob =
        pipeline.getFirstStage().getJobInstances().getByName(fixture.JOB_FOR_DEV_STAGE);
    assertThat(deletedJob.getState(), is(JobState.Completed));
    assertThat(deletedJob.getResult(), is(JobResult.Cancelled));
    JobInstance retainedJob =
        pipeline.getFirstStage().getJobInstances().getByName(fixture.DEV_STAGE_SECOND_JOB);
    assertThat(retainedJob.getState(), is(JobState.Scheduled));
    assertThat(retainedJob.getResult(), is(JobResult.Unknown));
  }
  @Test
  public void shouldOnlyAssignWorkToIdleAgentsRegisteredInAgentRemoteHandler() {
    AgentConfig agentConfig = AgentMother.remoteAgent();
    configHelper.addAgent(agentConfig);
    fixture.createPipelineWithFirstStageScheduled();
    AgentRuntimeInfo info =
        AgentRuntimeInfo.fromServer(agentConfig, true, "location", 1000000l, "OS");
    info.setCookie("cookie");

    AgentStatus[] statuses =
        new AgentStatus[] {
          AgentStatus.Building, AgentStatus.Pending,
          AgentStatus.Disabled, AgentStatus.Disabled,
          AgentStatus.LostContact, AgentStatus.Missing
        };
    for (AgentStatus status : statuses) {
      info.setStatus(status);
      agent = new AgentStub();

      agentRemoteHandler.process(agent, new Message(Action.ping, info));
      buildAssignmentService.onTimer();

      assertThat(
          "Should not assign work when agent status is " + status, agent.messages.size(), is(0));
    }
  }
  @Test
  public void shouldUpdateNumberOfActiveRemoteAgentsAfterAssigned() {
    AgentConfig agentConfig = AgentMother.remoteAgent();
    configHelper.addAgent(agentConfig);
    fixture.createPipelineWithFirstStageScheduled();
    buildAssignmentService.onTimer();

    int before = agentService.numberOfActiveRemoteAgents();
    Work work = buildAssignmentService.assignWorkToAgent(agent(agentConfig));
    assertThat(work, instanceOf(BuildWork.class));
    assertThat(agentService.numberOfActiveRemoteAgents(), is(before + 1));
  }
  @Test
  public void shouldCancelOutOfDateBuilds() throws Exception {
    fixture.createPipelineWithFirstStageScheduled();
    buildAssignmentService.onTimer();
    configHelper.removeStage(fixture.pipelineName, fixture.devStage);

    buildAssignmentService.onConfigChange(goConfigService.getCurrentConfig());

    Pipeline pipeline = pipelineDao.mostRecentPipeline(fixture.pipelineName);
    JobInstance job = pipeline.getFirstStage().getJobInstances().first();
    assertThat(job.getState(), is(JobState.Completed));
    assertThat(job.getResult(), is(JobResult.Cancelled));
  }
  @Test
  public void shouldCancelBuildBelongingToNonExistentPipelineWhenCreatingWork() throws Exception {
    fixture.createPipelineWithFirstStageScheduled();
    Pipeline pipeline = pipelineDao.mostRecentPipeline(fixture.pipelineName);

    ScheduledPipelineLoader scheduledPipelineLoader = mock(ScheduledPipelineLoader.class);
    when(scheduledPipelineLoader.pipelineWithPasswordAwareBuildCauseByBuildId(
            pipeline.getFirstStage().getJobInstances().first().getId()))
        .thenThrow(new PipelineNotFoundException("thrown by mockPipelineService"));

    GoConfigService mockGoConfigService = mock(GoConfigService.class);
    CruiseConfig config = configHelper.currentConfig();
    configHelper.removePipeline(fixture.pipelineName, config);
    when(mockGoConfigService.getCurrentConfig()).thenReturn(config);

    buildAssignmentService =
        new BuildAssignmentService(
            mockGoConfigService,
            jobInstanceService,
            scheduleService,
            agentService,
            environmentConfigService,
            timeProvider,
            transactionTemplate,
            scheduledPipelineLoader,
            pipelineService,
            builderFactory,
            agentRemoteHandler);
    buildAssignmentService.onTimer();

    AgentConfig agentConfig = AgentMother.localAgent();
    agentConfig.addResource(new Resource("some-other-resource"));

    try {
      buildAssignmentService.assignWorkToAgent(agent(agentConfig));
      fail("should have thrown PipelineNotFoundException");
    } catch (PipelineNotFoundException e) {
      // ok
    }

    pipeline = pipelineDao.mostRecentPipeline(fixture.pipelineName);

    JobInstance job = pipeline.getFirstStage().getJobInstances().first();
    assertThat(job.getState(), is(JobState.Completed));
    assertThat(job.getResult(), is(JobResult.Cancelled));
    Stage stage = stageDao.findStageWithIdentifier(job.getIdentifier().getStageIdentifier());
    assertThat(stage.getState(), is(StageState.Cancelled));
    assertThat(stage.getResult(), is(StageResult.Cancelled));
  }
  @Test
  public void shouldNotAssignDeniedAgentWorkToAgentsRegisteredInAgentRemoteHandler() {
    AgentConfig agentConfig = AgentMother.remoteAgent();
    agentConfig.disable();

    configHelper.addAgent(agentConfig);
    fixture.createPipelineWithFirstStageScheduled();
    AgentRuntimeInfo info =
        AgentRuntimeInfo.fromServer(agentConfig, true, "location", 1000000l, "OS");
    info.setCookie("cookie");

    agentRemoteHandler.process(agent, new Message(Action.ping, info));
    buildAssignmentService.onTimer();

    assertThat(agent.messages.size(), is(0));
  }
  @Test
  public void shouldCallForReregisterIfAgentInstanceIsNotRegistered() {
    AgentConfig agentConfig = AgentMother.remoteAgent();
    fixture.createPipelineWithFirstStageScheduled();
    AgentRuntimeInfo info =
        AgentRuntimeInfo.fromServer(agentConfig, true, "location", 1000000l, "OS");
    agentService.requestRegistration(info);

    assertThat(agentService.findAgent(info.getUUId()).isRegistered(), is(false));

    info.setCookie("cookie");
    agentRemoteHandler.process(agent, new Message(Action.ping, info));
    buildAssignmentService.onTimer();

    assertThat(agent.messages.size(), is(1));
    assertThat(agent.messages.get(0).getAction(), is(Action.reregister));
  }
  @Test
  public void shouldNotAssignWorkToCanceledAgentsRegisteredInAgentRemoteHandler() {
    AgentConfig agentConfig = AgentMother.remoteAgent();
    configHelper.addAgent(agentConfig);
    fixture.createPipelineWithFirstStageScheduled();
    AgentRuntimeInfo info =
        AgentRuntimeInfo.fromServer(agentConfig, true, "location", 1000000l, "OS");
    info.setCookie("cookie");

    agentRemoteHandler.process(agent, new Message(Action.ping, info));

    AgentInstance agentInstance = agentService.findAgentAndRefreshStatus(info.getUUId());
    agentInstance.cancel();

    buildAssignmentService.onTimer();

    assertThat(
        "Should not assign work when agent status is Canceled", agent.messages.size(), is(0));
  }
  @Test
  public void shouldAssignMatchedJobToAgentsRegisteredInAgentRemoteHandler() {
    AgentConfig agentConfig = AgentMother.remoteAgent();
    configHelper.addAgent(agentConfig);
    fixture.createPipelineWithFirstStageScheduled();
    AgentRuntimeInfo info =
        AgentRuntimeInfo.fromServer(agentConfig, true, "location", 1000000l, "OS");
    info.setCookie("cookie");

    agentRemoteHandler.process(agent, new Message(Action.ping, info));

    int before = agentService.numberOfActiveRemoteAgents();

    buildAssignmentService.onTimer();

    assertThat(agent.messages.size(), is(1));
    assertThat(agent.messages.get(0).getData(), instanceOf(BuildWork.class));
    assertThat(agentService.numberOfActiveRemoteAgents(), is(before + 1));
  }
  @Test
  public void shouldCancelBuildBelongingToNonExistentPipeline() throws Exception {
    fixture.createPipelineWithFirstStageScheduled();
    buildAssignmentService.onTimer();

    configHelper.removePipeline(fixture.pipelineName);

    AgentConfig agentConfig = AgentMother.localAgent();
    agentConfig.addResource(new Resource("some-other-resource"));

    assertThat(
        (NoWork) buildAssignmentService.assignWorkToAgent(agent(agentConfig)),
        Matchers.is(BuildAssignmentService.NO_WORK));
    Pipeline pipeline = pipelineDao.mostRecentPipeline(fixture.pipelineName);
    JobInstance job = pipeline.getFirstStage().getJobInstances().first();
    assertThat(job.getState(), is(JobState.Completed));
    assertThat(job.getResult(), is(JobResult.Cancelled));
    Stage stage = stageDao.findStageWithIdentifier(job.getIdentifier().getStageIdentifier());
    assertThat(stage.getState(), is(StageState.Cancelled));
    assertThat(stage.getResult(), is(StageResult.Cancelled));
  }
  @Test
  public void shouldNotReloadScheduledJobPlansWhenAgentWorkAssignmentIsInProgress()
      throws Exception {
    fixture.createPipelineWithFirstStageScheduled();
    Pipeline pipeline = pipelineDao.mostRecentPipeline(fixture.pipelineName);
    JobInstance job = pipeline.getFirstStage().getJobInstances().first();

    final JobInstanceService mockJobInstanceService = mock(JobInstanceService.class);

    final Pipeline pipeline1 = pipeline;
    final Semaphore sem = new Semaphore(1);
    sem.acquire();
    when(mockJobInstanceService.orderedScheduledBuilds())
        .thenReturn(jobInstanceService.orderedScheduledBuilds());
    when(mockJobInstanceService.buildByIdWithTransitions(job.getId()))
        .thenReturn(jobInstanceService.buildByIdWithTransitions(job.getId()));

    ScheduledPipelineLoader scheduledPipelineLoader =
        new ScheduledPipelineLoader(null, null, null, null, null, null, null, null) {
          @Override
          public Pipeline pipelineWithPasswordAwareBuildCauseByBuildId(long buildId) {
            sem.release();
            sleepQuietly(1000);
            verify(mockJobInstanceService, times(1)).orderedScheduledBuilds();
            return pipeline1;
          }
        };

    final BuildAssignmentService buildAssignmentServiceUnderTest =
        new BuildAssignmentService(
            goConfigService,
            mockJobInstanceService,
            scheduleService,
            agentService,
            environmentConfigService,
            timeProvider,
            transactionTemplate,
            scheduledPipelineLoader,
            pipelineService,
            builderFactory,
            agentRemoteHandler);

    final Throwable[] fromThread = new Throwable[1];
    buildAssignmentServiceUnderTest.onTimer();

    Thread assigner =
        new Thread(
            new Runnable() {
              public void run() {
                try {
                  final AgentConfig agentConfig =
                      AgentMother.localAgentWithResources("some-other-resource");

                  buildAssignmentServiceUnderTest.assignWorkToAgent(agent(agentConfig));
                } catch (Throwable e) {
                  e.printStackTrace();
                  fromThread[0] = e;
                } finally {

                }
              }
            },
            "assignmentThread");
    assigner.start();

    sem.acquire();
    buildAssignmentServiceUnderTest.onTimer();

    assigner.join();
    assertThat(fromThread[0], is(nullValue()));
  }