### Question:
ProjectReleaseTaskServiceImpl implements ProjectReleaseTaskService { @Override public Long count(Integer projectId) { return projectReleaseTaskDao.countByProjectId(projectId); }  @Override ProjectReleaseTask save(ProjectReleaseTask projectReleaseTask); @Override List<ProjectReleaseTask> findAllByProjectId(Integer projectId); @Override Long count(Integer projectId); @Override Optional<ProjectReleaseTask> findByProjectIdAndVersion(Integer projectId, String version);  }### Answer:
@Test public void count_equal_to_0() { assertThat(projectReleaseTaskService.count(1)).isEqualTo(0); }