public void GetAllImages_ReturnsOkObjectResult_WithListOfImages()
{
// Arrange
mockRepo.Setup(repo => repo.GetAllImages()).Returns(GetTestImages());
var controller = new ImagesController(mockRepo.Object, mockGCS.Object, mockMapper.Object);
// Act
var result = controller.GetAllImages();
// Assert
var okObjectResult = Assert.IsType <OkObjectResult>(result.Result);
var model = Assert.IsAssignableFrom <IEnumerable <Image> >(
okObjectResult.Value);
Assert.Equal(GetTestImages().Count, model.Count());
}