### Question:
AdminServiceImpl implements AdminService { @Transactional @Override public boolean deleteUser(Long id) { throwUserNotExistById(id); boolean userRemoved = userService.removeById(id); QueryWrapper<UserIdentityDO> wrapper = new QueryWrapper<>(); wrapper.lambda().eq(UserIdentityDO::getUserId, id); return userRemoved && userIdentityService.remove(wrapper); }  @Override IPage<UserDO> getUserPageByGroupId(Long groupId, Long count, Long page); @Override boolean changeUserPassword(Long id, ResetPasswordDTO dto); @Transactional @Override boolean deleteUser(Long id); @Override boolean updateUserInfo(Long id, UpdateUserInfoDTO validator); @Override IPage<GroupDO> getGroupPage(Long page, Long count); @Override GroupPermissionsBO getGroup(Long id); @Transactional @Override boolean createGroup(NewGroupDTO dto); @Override boolean updateGroup(Long id, UpdateGroupDTO dto); @Override boolean deleteGroup(Long id); @Override boolean dispatchPermission(DispatchPermissionDTO dto); @Override boolean dispatchPermissions(DispatchPermissionsDTO dto); @Override boolean removePermissions(RemovePermissionsDTO dto); @Override List<GroupDO> getAllGroups(); @Override List<PermissionDO> getAllPermissions(); @Override Map<String, List<PermissionDO>> getAllStructualPermissions();  }### Answer:
@Test public void deleteUser() { RegisterDTO dto = new RegisterDTO(); dto.setUsername("pedro&佩德罗"); dto.setPassword("123456"); dto.setConfirmPassword("123456"); UserDO user = userService.createUser(dto); assertEquals("pedro&佩德罗", user.getUsername()); boolean b = adminService.deleteUser(user.getId()); assertTrue(b); UserDO selected = userMapper.selectById(user.getId()); assertNull(selected); }
@Test(expected = NotFoundException.class) public void deleteUser1() { Random random = new Random(); boolean b = adminService.deleteUser(random.nextLong()); assertFalse(b); }