public async void DeleteRobot_Ok()
        {
            //Arrange
            var robot = new Robot
            {
                Id   = Guid.NewGuid(),
                Name = "Test"
            };

            m_repositoryMock.Setup(t => t.SearchAsync(It.IsAny <Pagination>(), It.IsAny <Ordering>(), It.IsAny <IFilter <Robot> >()))
            .ReturnsAsync(new Tuple <int, List <Robot> >(1, new List <Robot> {
                robot
            }));

            //Act
            await m_robotService.DeleteRobotAsync(robot.Id);

            //Assert
            m_repositoryMock.Verify(t => t.DeleteAsync(It.IsAny <Robot>()), Times.Once);
        }