public void WhenImageInvoked_FileIsReturned()
        {
            Mock <IFileStorageService> fileStorageServiceMock = new Mock <IFileStorageService>();
            ResourcesController        resourcesController    = new ResourcesController(fileStorageServiceMock.Object);

            Byte[] fileBytes = new Byte[] {};
            fileStorageServiceMock.Setup(x => x.RetrieveFile("test")).Returns(fileBytes);

            var result = resourcesController.Image("test") as FileContentResult;

            Assert.AreEqual(fileBytes, result.FileContents);
        }