@Test
  public void testIsUserAssignedPrincipalForAdmin() {
    // given
    final WorkflowActionModel mockAction = mock(WorkflowActionModel.class);
    final UserModel mockUser = mock(UserModel.class);
    when(Boolean.valueOf(userService.isAdmin(mockUser))).thenReturn(Boolean.TRUE);
    when(userService.getCurrentUser()).thenReturn(mockUser);

    // when
    final boolean isAssigned = workflowActionService.isUserAssignedPrincipal(mockAction);

    // then
    assertThat(isAssigned).isTrue();
  }