public async Task IndexShouldReturnsViewWithCorrectModel()
        {
            // Arrange
            var brands             = DataHelper.GetBrandsCollection();
            var adminBrandsService = new Mock <IAdminBrandsService>();

            adminBrandsService
            .Setup(s => s.AllAsync())
            .ReturnsAsync(brands);

            var controller = new BrandsController(adminBrandsService.Object, null);

            // Act
            var result = await controller.Index();

            // Assert
            result.Should().NotBeNull();
            result.Should().BeOfType <ViewResult>();
            var viewName = result.As <ViewResult>().ViewName;

            viewName.Should().BeNull();
            var model     = result.As <ViewResult>().Model;
            var viewModel = model.As <BrandListingViewModel>();

            viewModel.Should().NotBeNull();
        }