public async Task DeletePoint_Should_ReturnOk()
        {
            // Arrange
            var adapterMock = new Mock <ITodoPointAdapter>();
            var loggerMock  = new Mock <ILogger <PointController> >();

            var testPoint = new TodoPointViewModel
            {
                PointId     = 2,
                TodoId      = 1,
                Description = "test point 2"
            };
            var testPoints = GetTestPoints();

            adapterMock.Setup(x => x.DeletePoint(It.IsAny <int>()))
            .Callback(() => testPoints.Remove(testPoints.Where(x => x.PointId == testPoint.PointId).FirstOrDefault()));

            var controller = new PointController(adapterMock.Object, loggerMock.Object);

            // Act
            var result = await controller.DeletePoint(testPoint.PointId, testPoint);

            // Assert
            var actionResult = Assert.IsAssignableFrom <ActionResult <TodoPointViewModel> >(result);
            var returnValue  = Assert.IsAssignableFrom <OkResult>(actionResult.Result);

            Assert.Single(testPoints);
        }