* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

*

*      http://www.apache.org/licenses/LICENSE-2.0

*

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

*/

* @author Frederik Heremans

* @author Joram Barrez

* @author Falko Menge

*/

  protected static final String TWO_TASKS_PROCESS = "org/camunda/bpm/engine/test/api/twoTasksProcess.bpmn20.xml";

  public void testSaveTaskUpdate() throws Exception{

    SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy hh:mm:ss");

    Task task = taskService.newTask();

    task.setDescription("description");

    task.setName("taskname");

    task.setPriority(0);

    task.setAssignee("taskassignee");

    task.setOwner("taskowner");

    Date dueDate = sdf.parse("01/02/2003 04:05:06");

    task.setDueDate(dueDate);

    task.setCaseInstanceId("taskcaseinstanceid");

    taskService.saveTask(task);

    // Fetch the task again and update

    task = taskService.createTaskQuery().taskId(task.getId()).singleResult();

    assertEquals("description", task.getDescription());

    assertEquals("taskname", task.getName());

    assertEquals("taskassignee", task.getAssignee());

    assertEquals("taskowner", task.getOwner());

    assertEquals(dueDate, task.getDueDate());

    assertEquals(0, task.getPriority());

    assertEquals("taskcaseinstanceid", task.getCaseInstanceId());

    if (processEngineConfiguration.getHistoryLevel().getId()>= ProcessEngineConfigurationImpl.HISTORYLEVEL_AUDIT) {

      HistoricTaskInstance historicTaskInstance = historyService

        .createHistoricTaskInstanceQuery()

        .taskId(task.getId())

        .singleResult();

      assertEquals("taskname", historicTaskInstance.getName());

      assertEquals("description", historicTaskInstance.getDescription());

      assertEquals("taskassignee", historicTaskInstance.getAssignee());

      assertEquals("taskowner", historicTaskInstance.getOwner());

      assertEquals(dueDate, historicTaskInstance.getDueDate());

      assertEquals(0, historicTaskInstance.getPriority());

      assertEquals("taskcaseinstanceid", historicTaskInstance.getCaseInstanceId());

    }

    task.setName("updatedtaskname");

    task.setDescription("updateddescription");

    task.setPriority(1);

    task.setAssignee("updatedassignee");

    task.setOwner("updatedowner");

    dueDate = sdf.parse("01/02/2003 04:05:06");

    task.setDueDate(dueDate);

    task.setCaseInstanceId("updatetaskcaseinstanceid");

    taskService.saveTask(task);

    task = taskService.createTaskQuery().taskId(task.getId()).singleResult();

    assertEquals("updatedtaskname", task.getName());

    assertEquals("updateddescription", task.getDescription());

    assertEquals("updatedassignee", task.getAssignee());

    assertEquals("updatedowner", task.getOwner());

    assertEquals(dueDate, task.getDueDate());

    assertEquals(1, task.getPriority());

    assertEquals("updatetaskcaseinstanceid", task.getCaseInstanceId());

    if (processEngineConfiguration.getHistoryLevel().getId()>= ProcessEngineConfigurationImpl.HISTORYLEVEL_AUDIT) {

      HistoricTaskInstance historicTaskInstance = historyService

        .createHistoricTaskInstanceQuery()

        .taskId(task.getId())

        .singleResult();

      assertEquals("updatedtaskname", historicTaskInstance.getName());

      assertEquals("updateddescription", historicTaskInstance.getDescription());

      assertEquals("updatedassignee", historicTaskInstance.getAssignee());

      assertEquals("updatedowner", historicTaskInstance.getOwner());

      assertEquals(dueDate, historicTaskInstance.getDueDate());

      assertEquals(1, historicTaskInstance.getPriority());

      assertEquals("updatetaskcaseinstanceid", historicTaskInstance.getCaseInstanceId());

    }

    // Finally, delete task

    taskService.deleteTask(task.getId(), true);

  }

  public void testTaskOwner() {

    Task task = taskService.newTask();

    task.setOwner("johndoe");

    taskService.saveTask(task);

    // Fetch the task again and update

    task = taskService.createTaskQuery().taskId(task.getId()).singleResult();

    assertEquals("johndoe", task.getOwner());

    task.setOwner("joesmoe");

    taskService.saveTask(task);

    task = taskService.createTaskQuery().taskId(task.getId()).singleResult();

    assertEquals("joesmoe", task.getOwner());

    // Finally, delete task

    taskService.deleteTask(task.getId(), true);

  }

  public void testTaskComments() {

    int historyLevel = processEngineConfiguration.getHistoryLevel().getId();

    if (historyLevel> ProcessEngineConfigurationImpl.HISTORYLEVEL_NONE) {

      Task task = taskService.newTask();

      task.setOwner("johndoe");

      taskService.saveTask(task);

      String taskId = task.getId();

      identityService.setAuthenticatedUserId("johndoe");

      // Fetch the task again and update

      Comment comment = taskService.createComment(taskId, null, "look at this \n       isn't this great? slkdjf sldkfjs ldkfjs ldkfjs ldkfj sldkfj sldkfj sldkjg laksfg sdfgsd;flgkj ksajdhf skjdfh ksjdhf skjdhf kalskjgh lskh dfialurhg kajsh dfuieqpgkja rzvkfnjviuqerhogiuvysbegkjz lkhf ais liasduh flaisduh ajiasudh vaisudhv nsfd");

      assertNotNull(comment.getId());

      assertEquals("johndoe", comment.getUserId());

      assertEquals(taskId, comment.getTaskId());

      assertNull(comment.getProcessInstanceId());

      assertEquals("look at this isn't this great? slkdjf sldkfjs ldkfjs ldkfjs ldkfj sldkfj sldkfj sldkjg laksfg sdfgsd;flgkj ksajdhf skjdfh ksjdhf skjdhf kalskjgh lskh dfialurhg ...", ((Event)comment).getMessage());

      assertEquals("look at this \n       isn't this great? slkdjf sldkfjs ldkfjs ldkfjs ldkfj sldkfj sldkfj sldkjg laksfg sdfgsd;flgkj ksajdhf skjdfh ksjdhf skjdhf kalskjgh lskh dfialurhg kajsh dfuieqpgkja rzvkfnjviuqerhogiuvysbegkjz lkhf ais liasduh flaisduh ajiasudh vaisudhv nsfd", comment.getFullMessage());

      assertNotNull(comment.getTime());

      taskService.createComment(taskId, "pid", "one");

      taskService.createComment(taskId, "pid", "two");

      Set<String> expectedComments = new HashSet<String>();

      expectedComments.add("one");

      expectedComments.add("two");

      Set<String> comments = new HashSet<String>();

      for (Comment cmt: taskService.getProcessInstanceComments("pid")) {

        comments.add(cmt.getFullMessage());

      }

      assertEquals(expectedComments, comments);

      // Finally, delete task

      taskService.deleteTask(taskId, true);

    }

  }

  public void testAddTaskCommentNull() {

    int historyLevel = processEngineConfiguration.getHistoryLevel().getId();

    if (historyLevel> ProcessEngineConfigurationImpl.HISTORYLEVEL_NONE) {

      Task task = taskService.newTask("testId");

      taskService.saveTask(task);

      try {

        taskService.createComment(task.getId(), null, null);

        fail("Expected process engine exception");

      }

      catch (ProcessEngineException e) {}

      finally {

        taskService.deleteTask(task.getId(), true);

      }

    }

  }

  public void testAddTaskNullComment() {

    int historyLevel = processEngineConfiguration.getHistoryLevel().getId();

    if (historyLevel> ProcessEngineConfigurationImpl.HISTORYLEVEL_NONE) {

      try {

        taskService.createComment(null, null, "test");

        fail("Expected process engine exception");

      }

      catch (ProcessEngineException e){}

    }

  }

  public void testTaskAttachments() {

    int historyLevel = processEngineConfiguration.getHistoryLevel().getId();

    if (historyLevel> ProcessEngineConfigurationImpl.HISTORYLEVEL_NONE) {

      Task task = taskService.newTask();

      task.setOwner("johndoe");

      taskService.saveTask(task);

      String taskId = task.getId();

      identityService.setAuthenticatedUserId("johndoe");

      // Fetch the task again and update

      taskService.createAttachment("web page", taskId, "someprocessinstanceid", "weatherforcast", "temperatures and more", "http://weather.com");

      Attachment attachment = taskService.getTaskAttachments(taskId).get(0);

      assertEquals("weatherforcast", attachment.getName());

      assertEquals("temperatures and more", attachment.getDescription());

      assertEquals("web page", attachment.getType());

      assertEquals(taskId, attachment.getTaskId());

      assertEquals("someprocessinstanceid", attachment.getProcessInstanceId());

      assertEquals("http://weather.com", attachment.getUrl());

      assertNull(taskService.getAttachmentContent(attachment.getId()));

      // Finally, clean up

      taskService.deleteTask(taskId);

      assertEquals(0, taskService.getTaskComments(taskId).size());

      assertEquals(1, historyService.createHistoricTaskInstanceQuery().taskId(taskId).list().size());

      taskService.deleteTask(taskId, true);

    }

  }

  public void testTaskDelegation() {

    Task task = taskService.newTask();

    task.setOwner("johndoe");

    task.delegate("joesmoe");

    taskService.saveTask(task);

    String taskId = task.getId();

    task = taskService.createTaskQuery().taskId(taskId).singleResult();

    assertEquals("johndoe", task.getOwner());

    assertEquals("joesmoe", task.getAssignee());

    assertEquals(DelegationState.PENDING, task.getDelegationState());

    taskService.resolveTask(taskId);

    task = taskService.createTaskQuery().taskId(taskId).singleResult();

    assertEquals("johndoe", task.getOwner());

    assertEquals("johndoe", task.getAssignee());

    assertEquals(DelegationState.RESOLVED, task.getDelegationState());

    task.setAssignee(null);

    task.setDelegationState(null);

    taskService.saveTask(task);

    task = taskService.createTaskQuery().taskId(taskId).singleResult();

    assertEquals("johndoe", task.getOwner());

    assertNull(task.getAssignee());

    assertNull(task.getDelegationState());

    task.setAssignee("jackblack");

    task.setDelegationState(DelegationState.RESOLVED);

    taskService.saveTask(task);

    task = taskService.createTaskQuery().taskId(taskId).singleResult();

    assertEquals("johndoe", task.getOwner());

    assertEquals("jackblack", task.getAssignee());

    assertEquals(DelegationState.RESOLVED, task.getDelegationState());

    // Finally, delete task

    taskService.deleteTask(taskId, true);

  }

  public void testTaskDelegationThroughServiceCall() {

    Task task = taskService.newTask();

    task.setOwner("johndoe");

    taskService.saveTask(task);

    String taskId = task.getId();

    // Fetch the task again and update

    task = taskService.createTaskQuery().taskId(taskId).singleResult();

    taskService.delegateTask(taskId, "joesmoe");

    task = taskService.createTaskQuery().taskId(taskId).singleResult();

    assertEquals("johndoe", task.getOwner());

    assertEquals("joesmoe", task.getAssignee());

    assertEquals(DelegationState.PENDING, task.getDelegationState());

    taskService.resolveTask(taskId);

    task = taskService.createTaskQuery().taskId(taskId).singleResult();

    assertEquals("johndoe", task.getOwner());

    assertEquals("johndoe", task.getAssignee());

    assertEquals(DelegationState.RESOLVED, task.getDelegationState());

    // Finally, delete task

    taskService.deleteTask(taskId, true);

  }

  public void testTaskAssignee() {

    Task task = taskService.newTask();

    task.setAssignee("johndoe");

    taskService.saveTask(task);

    // Fetch the task again and update

    task = taskService.createTaskQuery().taskId(task.getId()).singleResult();

    assertEquals("johndoe", task.getAssignee());

    task.setAssignee("joesmoe");

    taskService.saveTask(task);

    task = taskService.createTaskQuery().taskId(task.getId()).singleResult();

    assertEquals("joesmoe", task.getAssignee());

    // Finally, delete task

    taskService.deleteTask(task.getId(), true);

  }

  public void testSaveTaskNullTask() {

    try {

      taskService.saveTask(null);

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("task is null", ae.getMessage());

    }

  }

  public void testDeleteTaskNullTaskId() {

    try {

      taskService.deleteTask(null);

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      // Expected exception

    }

  }

  public void testDeleteTaskUnexistingTaskId() {

    // Deleting unexisting task should be silently ignored

    taskService.deleteTask("unexistingtaskid");

  }

  public void testDeleteTasksNullTaskIds() {

    try {

      taskService.deleteTasks(null);

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      // Expected exception

    }

  }

  public void testDeleteTasksTaskIdsUnexistingTaskId() {

    Task existingTask = taskService.newTask();

    taskService.saveTask(existingTask);

    // The unexisting taskId's should be silently ignored. Existing task should

    // have been deleted.

    taskService.deleteTasks(Arrays.asList("unexistingtaskid1", existingTask.getId()), true);

    existingTask = taskService.createTaskQuery().taskId(existingTask.getId()).singleResult();

    assertNull(existingTask);

  }

  public void testClaimNullArguments() {

    try {

      taskService.claim(null, "userid");

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("taskId is null", ae.getMessage());

    }

  }

  public void testClaimUnexistingTaskId() {

    User user = identityService.newUser("user");

    identityService.saveUser(user);

    try {

      taskService.claim("unexistingtaskid", user.getId());

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("Cannot find task with id unexistingtaskid", ae.getMessage());

    }

    identityService.deleteUser(user.getId());

  }

  public void testClaimAlreadyClaimedTaskByOtherUser() {

    Task task = taskService.newTask();

    taskService.saveTask(task);

    User user = identityService.newUser("user");

    identityService.saveUser(user);

    User secondUser = identityService.newUser("seconduser");

    identityService.saveUser(secondUser);

    // Claim task the first time

    taskService.claim(task.getId(), user.getId());

    try {

      taskService.claim(task.getId(), secondUser.getId());

      fail("ProcessEngineException expected");

    } catch (TaskAlreadyClaimedException ae) {

      assertTextPresent("Task '" + task.getId() + "' is already claimed by someone else.", ae.getMessage());

    }

    taskService.deleteTask(task.getId(), true);

    identityService.deleteUser(user.getId());

    identityService.deleteUser(secondUser.getId());

  }

  public void testClaimAlreadyClaimedTaskBySameUser() {

    Task task = taskService.newTask();

    taskService.saveTask(task);

    User user = identityService.newUser("user");

    identityService.saveUser(user);

    // Claim task the first time

    taskService.claim(task.getId(), user.getId());

    task = taskService.createTaskQuery().taskId(task.getId()).singleResult();

    // Claim the task again with the same user. No exception should be thrown

    taskService.claim(task.getId(), user.getId());

    taskService.deleteTask(task.getId(), true);

    identityService.deleteUser(user.getId());

  }

  public void testUnClaimTask() {

    Task task = taskService.newTask();

    taskService.saveTask(task);

    User user = identityService.newUser("user");

    identityService.saveUser(user);

    // Claim task the first time

    taskService.claim(task.getId(), user.getId());

    task = taskService.createTaskQuery().taskId(task.getId()).singleResult();

    assertEquals(user.getId(), task.getAssignee());

    // Unclaim the task

    taskService.claim(task.getId(), null);

    task = taskService.createTaskQuery().taskId(task.getId()).singleResult();

    assertNull(task.getAssignee());

    taskService.deleteTask(task.getId(), true);

    identityService.deleteUser(user.getId());

  }

  public void testCompleteTaskNullTaskId() {

    try {

      taskService.complete(null);

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("taskId is null", ae.getMessage());

    }

  }

  public void testCompleteTaskUnexistingTaskId() {

    try {

      taskService.complete("unexistingtask");

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("Cannot find task with id unexistingtask", ae.getMessage());

    }

  }

  public void testCompleteTaskWithParametersNullTaskId() {

    Map<String, Object> variables = new HashMap<String, Object>();

    variables.put("myKey", "myValue");

    try {

      taskService.complete(null, variables);

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("taskId is null", ae.getMessage());

    }

  }

  public void testCompleteTaskWithParametersUnexistingTaskId() {

    Map<String, Object> variables = new HashMap<String, Object>();

    variables.put("myKey", "myValue");

    try {

      taskService.complete("unexistingtask", variables);

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("Cannot find task with id unexistingtask", ae.getMessage());

    }

  }

  public void testCompleteTaskWithParametersNullParameters() {

    Task task = taskService.newTask();

    taskService.saveTask(task);

    String taskId = task.getId();

    taskService.complete(taskId, null);

    if (processEngineConfiguration.getHistoryLevel().getId() >= ProcessEngineConfigurationImpl.HISTORYLEVEL_ACTIVITY) {

      historyService.deleteHistoricTaskInstance(taskId);

    }

    // Fetch the task again

    task = taskService.createTaskQuery().taskId(taskId).singleResult();

    assertNull(task);

  }

  @SuppressWarnings("unchecked")

  public void testCompleteTaskWithParametersEmptyParameters() {

    Task task = taskService.newTask();

    taskService.saveTask(task);

    String taskId = task.getId();

    taskService.complete(taskId, Collections.EMPTY_MAP);

    if (processEngineConfiguration.getHistoryLevel().getId() >= ProcessEngineConfigurationImpl.HISTORYLEVEL_ACTIVITY) {

      historyService.deleteHistoricTaskInstance(taskId);

    }

    // Fetch the task again

    task = taskService.createTaskQuery().taskId(taskId).singleResult();

    assertNull(task);

  }

  @Deployment(resources = TWO_TASKS_PROCESS)

  public void testCompleteWithParametersTask() {

    ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("twoTasksProcess");

    // Fetch first task

    Task task = taskService.createTaskQuery().singleResult();

    assertEquals("First task", task.getName());

    // Complete first task

    Map<String, Object> taskParams = new HashMap<String, Object>();

    taskParams.put("myParam", "myValue");

    taskService.complete(task.getId(), taskParams);

    // Fetch second task

    task = taskService.createTaskQuery().singleResult();

    assertEquals("Second task", task.getName());

    // Verify task parameters set on execution

    Map<String, Object> variables = runtimeService.getVariables(processInstance.getId());

    assertEquals(1, variables.size());

    assertEquals("myValue", variables.get("myParam"));

  }

  @Deployment(resources={"org/camunda/bpm/engine/test/api/cmmn/oneTaskCase.cmmn"})

  public void testCompleteTaskShouldCompleteCaseExecution() {

    // given

    String caseDefinitionId = repositoryService

        .createCaseDefinitionQuery()

        .singleResult()

        .getId();

    // an active case instance

    caseService

       .withCaseDefinition(caseDefinitionId)

       .create();

    String caseExecutionId = caseService

        .createCaseExecutionQuery()

        .activityId("PI_HumanTask_1")

        .singleResult()

        .getId();

    caseService

      .withCaseExecution(caseExecutionId)

      .manualStart();

    Task task = taskService.createTaskQuery().singleResult();

    assertNotNull(task);

    // when

    taskService.complete(task.getId());

    // then

    task = taskService.createTaskQuery().singleResult();

    assertNull(task);

    CaseExecution caseExecution = caseService

      .createCaseExecutionQuery()

      .activityId("PI_HumanTask_1")

      .singleResult();

    assertNull(caseExecution);

    CaseInstance caseInstance = caseService

        .createCaseInstanceQuery()

        .singleResult();

    assertNotNull(caseInstance);

    assertTrue(caseInstance.isCompleted());

  }

  public void testResolveTaskNullTaskId() {

    try {

      taskService.resolveTask(null);

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("taskId is null", ae.getMessage());

    }

  }

  public void testResolveTaskUnexistingTaskId() {

    try {

      taskService.resolveTask("unexistingtask");

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("Cannot find task with id unexistingtask", ae.getMessage());

    }

  }

  public void testResolveTaskWithParametersNullParameters() {

    Task task = taskService.newTask();

    task.setDelegationState(DelegationState.PENDING);

    taskService.saveTask(task);

    String taskId = task.getId();

    taskService.resolveTask(taskId, null);

    if (processEngineConfiguration.getHistoryLevel().getId()>= ProcessEngineConfigurationImpl.HISTORYLEVEL_AUDIT) {

      historyService.deleteHistoricTaskInstance(taskId);

    }

    // Fetch the task again

    task = taskService.createTaskQuery().taskId(taskId).singleResult();

    assertEquals(DelegationState.RESOLVED, task.getDelegationState());

    taskService.deleteTask(taskId, true);

  }

  @SuppressWarnings("unchecked")

  public void testResolveTaskWithParametersEmptyParameters() {

    Task task = taskService.newTask();

    task.setDelegationState(DelegationState.PENDING);

    taskService.saveTask(task);

    String taskId = task.getId();

    taskService.resolveTask(taskId, Collections.EMPTY_MAP);

    if (processEngineConfiguration.getHistoryLevel().getId()>= ProcessEngineConfigurationImpl.HISTORYLEVEL_AUDIT) {

      historyService.deleteHistoricTaskInstance(taskId);

    }

    // Fetch the task again

    task = taskService.createTaskQuery().taskId(taskId).singleResult();

    assertEquals(DelegationState.RESOLVED, task.getDelegationState());

    taskService.deleteTask(taskId, true);

  }

  @Deployment(resources = TWO_TASKS_PROCESS)

  public void testResolveWithParametersTask() {

    ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("twoTasksProcess");

    // Fetch first task

    Task task = taskService.createTaskQuery().singleResult();

    assertEquals("First task", task.getName());

    task.delegate("johndoe");

    // Resolve first task

    Map<String, Object> taskParams = new HashMap<String, Object>();

    taskParams.put("myParam", "myValue");

    taskService.resolveTask(task.getId(), taskParams);

    // Verify that task is resolved

    task = taskService.createTaskQuery().taskDelegationState(DelegationState.RESOLVED).singleResult();

    assertEquals("First task", task.getName());

    // Verify task parameters set on execution

    Map<String, Object> variables = runtimeService.getVariables(processInstance.getId());

    assertEquals(1, variables.size());

    assertEquals("myValue", variables.get("myParam"));

  }

  public void testSetAssignee() {

    User user = identityService.newUser("user");

    identityService.saveUser(user);

    Task task = taskService.newTask();

    assertNull(task.getAssignee());

    taskService.saveTask(task);

    // Set assignee

    taskService.setAssignee(task.getId(), user.getId());

    // Fetch task again

    task = taskService.createTaskQuery().taskId(task.getId()).singleResult();

    assertEquals(user.getId(), task.getAssignee());

    identityService.deleteUser(user.getId());

    taskService.deleteTask(task.getId(), true);

  }

  public void testSetAssigneeNullTaskId() {

    try {

      taskService.setAssignee(null, "userId");

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("taskId is null", ae.getMessage());

    }

  }

  public void testSetAssigneeUnexistingTask() {

    User user = identityService.newUser("user");

    identityService.saveUser(user);

    try {

      taskService.setAssignee("unexistingTaskId", user.getId());

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("Cannot find task with id unexistingTaskId", ae.getMessage());

    }

    identityService.deleteUser(user.getId());

  }

  public void testAddCandidateUserDuplicate() {

    // Check behavior when adding the same user twice as candidate

    User user = identityService.newUser("user");

    identityService.saveUser(user);

    Task task = taskService.newTask();

    taskService.saveTask(task);

    taskService.addCandidateUser(task.getId(), user.getId());

    // Add as candidate the second time

    taskService.addCandidateUser(task.getId(), user.getId());

    identityService.deleteUser(user.getId());

    taskService.deleteTask(task.getId(), true);

  }

  public void testAddCandidateUserNullTaskId() {

    try {

      taskService.addCandidateUser(null, "userId");

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("taskId is null", ae.getMessage());

    }

  }

  public void testAddCandidateUserNullUserId() {

    try {

      taskService.addCandidateUser("taskId", null);

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("userId and groupId cannot both be null", ae.getMessage());

    }

  }

  public void testAddCandidateUserUnexistingTask() {

    User user = identityService.newUser("user");

    identityService.saveUser(user);

    try {

      taskService.addCandidateUser("unexistingTaskId", user.getId());

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("Cannot find task with id unexistingTaskId", ae.getMessage());

    }

    identityService.deleteUser(user.getId());

  }

  public void testAddCandidateGroupNullTaskId() {

    try {

      taskService.addCandidateGroup(null, "groupId");

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("taskId is null", ae.getMessage());

    }

  }

  public void testAddCandidateGroupNullGroupId() {

    try {

      taskService.addCandidateGroup("taskId", null);

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("userId and groupId cannot both be null", ae.getMessage());

    }

  }

  public void testAddCandidateGroupUnexistingTask() {

    Group group = identityService.newGroup("group");

    identityService.saveGroup(group);

    try {

      taskService.addCandidateGroup("unexistingTaskId", group.getId());

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("Cannot find task with id unexistingTaskId", ae.getMessage());

    }

    identityService.deleteGroup(group.getId());

  }

  public void testAddGroupIdentityLinkNullTaskId() {

    try {

      taskService.addGroupIdentityLink(null, "groupId", IdentityLinkType.CANDIDATE);

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("taskId is null", ae.getMessage());

    }

  }

  public void testAddGroupIdentityLinkNullUserId() {

    try {

      taskService.addGroupIdentityLink("taskId", null, IdentityLinkType.CANDIDATE);

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("userId and groupId cannot both be null", ae.getMessage());

    }

  }

  public void testAddGroupIdentityLinkUnexistingTask() {

    User user = identityService.newUser("user");

    identityService.saveUser(user);

    try {

      taskService.addGroupIdentityLink("unexistingTaskId", user.getId(), IdentityLinkType.CANDIDATE);

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("Cannot find task with id unexistingTaskId", ae.getMessage());

    }

    identityService.deleteUser(user.getId());

  }

  public void testAddUserIdentityLinkNullTaskId() {

    try {

      taskService.addUserIdentityLink(null, "userId", IdentityLinkType.CANDIDATE);

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("taskId is null", ae.getMessage());

    }

  }

  public void testAddUserIdentityLinkNullUserId() {

    try {

      taskService.addUserIdentityLink("taskId", null, IdentityLinkType.CANDIDATE);

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("userId and groupId cannot both be null", ae.getMessage());

    }

  }

  public void testAddUserIdentityLinkUnexistingTask() {

    User user = identityService.newUser("user");

    identityService.saveUser(user);

    try {

      taskService.addUserIdentityLink("unexistingTaskId", user.getId(), IdentityLinkType.CANDIDATE);

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("Cannot find task with id unexistingTaskId", ae.getMessage());

    }

    identityService.deleteUser(user.getId());

  }

  public void testGetIdentityLinksWithCandidateUser() {

    Task task = taskService.newTask();

    taskService.saveTask(task);

    String taskId = task.getId();

    identityService.saveUser(identityService.newUser("kermit"));

    taskService.addCandidateUser(taskId, "kermit");

    List<IdentityLink> identityLinks = taskService.getIdentityLinksForTask(taskId);

    assertEquals(1, identityLinks.size());

    assertEquals("kermit", identityLinks.get(0).getUserId());

    assertNull(identityLinks.get(0).getGroupId());

    assertEquals(IdentityLinkType.CANDIDATE, identityLinks.get(0).getType());

    //cleanup

    taskService.deleteTask(taskId, true);

    identityService.deleteUser("kermit");

  }

  public void testGetIdentityLinksWithCandidateGroup() {

    Task task = taskService.newTask();

    taskService.saveTask(task);

    String taskId = task.getId();

    identityService.saveGroup(identityService.newGroup("muppets"));

    taskService.addCandidateGroup(taskId, "muppets");

    List<IdentityLink> identityLinks = taskService.getIdentityLinksForTask(taskId);

    assertEquals(1, identityLinks.size());

    assertEquals("muppets", identityLinks.get(0).getGroupId());

    assertNull(identityLinks.get(0).getUserId());

    assertEquals(IdentityLinkType.CANDIDATE, identityLinks.get(0).getType());

    //cleanup

    taskService.deleteTask(taskId, true);

    identityService.deleteGroup("muppets");

  }

  public void testGetIdentityLinksWithAssignee() {

    Task task = taskService.newTask();

    taskService.saveTask(task);

    String taskId = task.getId();

    identityService.saveUser(identityService.newUser("kermit"));

    taskService.claim(taskId, "kermit");

    List<IdentityLink> identityLinks = taskService.getIdentityLinksForTask(taskId);

    assertEquals(1, identityLinks.size());

    assertEquals("kermit", identityLinks.get(0).getUserId());

    assertNull(identityLinks.get(0).getGroupId());

    assertEquals(IdentityLinkType.ASSIGNEE, identityLinks.get(0).getType());

    //cleanup

    taskService.deleteTask(taskId, true);

    identityService.deleteUser("kermit");

  }

  public void testGetIdentityLinksWithNonExistingAssignee() {

    Task task = taskService.newTask();

    taskService.saveTask(task);

    String taskId = task.getId();

    taskService.claim(taskId, "nonExistingAssignee");

    List<IdentityLink> identityLinks = taskService.getIdentityLinksForTask(taskId);

    assertEquals(1, identityLinks.size());

    assertEquals("nonExistingAssignee", identityLinks.get(0).getUserId());

    assertNull(identityLinks.get(0).getGroupId());

    assertEquals(IdentityLinkType.ASSIGNEE, identityLinks.get(0).getType());

    //cleanup

    taskService.deleteTask(taskId, true);

  }

  public void testGetIdentityLinksWithOwner() {

    Task task = taskService.newTask();

    taskService.saveTask(task);

    String taskId = task.getId();

    identityService.saveUser(identityService.newUser("kermit"));

    identityService.saveUser(identityService.newUser("fozzie"));

    taskService.claim(taskId, "kermit");

    taskService.delegateTask(taskId, "fozzie");

    List<IdentityLink> identityLinks = taskService.getIdentityLinksForTask(taskId);

    assertEquals(2, identityLinks.size());

    IdentityLink assignee = identityLinks.get(0);

    assertEquals("fozzie", assignee.getUserId());

    assertNull(assignee.getGroupId());

    assertEquals(IdentityLinkType.ASSIGNEE, assignee.getType());

    IdentityLink owner = identityLinks.get(1);

    assertEquals("kermit", owner.getUserId());

    assertNull(owner.getGroupId());

    assertEquals(IdentityLinkType.OWNER, owner.getType());

    //cleanup

    taskService.deleteTask(taskId, true);

    identityService.deleteUser("kermit");

    identityService.deleteUser("fozzie");

  }

  public void testGetIdentityLinksWithNonExistingOwner() {

    Task task = taskService.newTask();

    taskService.saveTask(task);

    String taskId = task.getId();

    taskService.claim(taskId, "nonExistingOwner");

    taskService.delegateTask(taskId, "nonExistingAssignee");

    List<IdentityLink> identityLinks = taskService.getIdentityLinksForTask(taskId);

    assertEquals(2, identityLinks.size());

    IdentityLink assignee = identityLinks.get(0);

    assertEquals("nonExistingAssignee", assignee.getUserId());

    assertNull(assignee.getGroupId());

    assertEquals(IdentityLinkType.ASSIGNEE, assignee.getType());

    IdentityLink owner = identityLinks.get(1);

    assertEquals("nonExistingOwner", owner.getUserId());

    assertNull(owner.getGroupId());

    assertEquals(IdentityLinkType.OWNER, owner.getType());

    //cleanup

    taskService.deleteTask(taskId, true);

  }

  public void testSetPriority() {

    Task task = taskService.newTask();

    taskService.saveTask(task);

    taskService.setPriority(task.getId(), 12345);

    // Fetch task again to check if the priority is set

    task = taskService.createTaskQuery().taskId(task.getId()).singleResult();

    assertEquals(12345, task.getPriority());

    taskService.deleteTask(task.getId(), true);

  }

  public void testSetPriorityUnexistingTaskId() {

    try {

      taskService.setPriority("unexistingtask", 12345);

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("Cannot find task with id unexistingtask", ae.getMessage());

    }

  }

  public void testSetPriorityNullTaskId() {

    try {

      taskService.setPriority(null, 12345);

      fail("ProcessEngineException expected");

    } catch (ProcessEngineException ae) {

      assertTextPresent("taskId is null", ae.getMessage());

    }

  }

  /**

   * @see http://jira.codehaus.org/browse/ACT-1059

   */

  public void testSetDelegationState() {

    Task task = taskService.newTask();

    task.setOwner("wuzh");

    task.delegate("other");

    taskService.saveTask(task);

    String taskId = task.getId();

    task = taskService.createTaskQuery().taskId(taskId).singleResult();

    assertEquals("wuzh", task.getOwner());

    assertEquals("other", task.getAssignee());

    assertEquals(DelegationState.PENDING, task.getDelegationState());

    task.setDelegationState(DelegationState.RESOLVED);

    taskService.saveTask(task);

    task = taskService.createTaskQuery().taskId(taskId).singleResult();

    assertEquals("wuzh", task.getOwner());

    assertEquals("other", task.getAssignee());

    assertEquals(DelegationState.RESOLVED, task.getDelegationState());