public void GetProducts_When_Filtered_By_Ids_Returns_CorrectSet()
{
// given there are products with suppliers and categories
var supplier = new Supplier { SupplierID = 1, CompanyName = "Supplier 1" };
var category = new Category { CategoryID = 1, CategoryName = "Category 1" };
var products = new List<Product>();
for (var i = 0; i < 100; i++)
{
var product = new Product
{
ProductID = i,
ProductName = $"Product {i}",
Category = category,
Supplier = supplier
};
products.Add(product);
}
var mockedUnitOfWork = new Mock<IUnitOfWork>();
var mockedProductRepository = new Mock<IRepository<Product>>();
mockedUnitOfWork.Setup(e => e.GetRepository<Product>()).Returns(mockedProductRepository.Object);
mockedProductRepository.Setup(e => e.GetAll()).Returns(products.AsQueryable());
// when GetProducts is called with id filter
var productsService = new ProductsService(mockedUnitOfWork.Object);
var getProductsFilter = new GetProductsFilter {Ids = new[] {1, 7, 15, 22, 9}};
var productDescriptions = productsService.GetProducts(Int32.MaxValue, 1, getProductsFilter).Data;
// then correct set of product descriptions are returned
Assert.IsTrue(productDescriptions.Select(e => e.Id).Intersect(new[] { 1, 7, 15, 22, 9 }).Count() == 5, "Products with ids 1, 7, 15, 22, 9 are returned");
}
public QueryResult<ProductDetails> GetProducts(int entriesPerPage, int page, GetProductsFilter filter = null)
{
var result = new QueryResult<ProductDetails>
{
Page = page,
PageSize = entriesPerPage
};
var products = _unitOfWork.GetRepository<Product>().GetAll();
var filteredProducts = filter != null ? filter.Apply(products) : products;
var productDetails = filteredProducts.Select(ProjectProductDetails);
result.Total = productDetails.Count();
result.Data = productDetails
.OrderBy(e => e.Id)
.Page(entriesPerPage, page).ToList();
return result;
}
