public void MainProducts_Should_Throw_ArgumentNullException_If_Products_Is_Null()
{
IQueryable <Product> products = null;
var ex = Assert.Throws <ArgumentNullException>(() => ProductExtensions.MainProducts(products));
Assert.Equal(nameof(products), ex.ParamName);
}
public void MainProducts_Should_Return_Only_Products_Without_A_Main_Product_Associated()
{
var p1 = Product.Create("ean", "sku", "name", "url");
var p2 = Product.Create("ean", "sku", "name", "url");
var p3 = Product.Create("ean", "sku", "name", "url");
IQueryable <Product> products = new Product[]
{
p1, p2, p3
}.AsQueryable();
var mainProducts = ProductExtensions.MainProducts(products).ToArray();
Assert.True(mainProducts.All(p => p.MainProduct == null));
}
