public void AddProduct()
{
var sut = new MruProductsImpl(new List<Guid> { products[0].Id }, factories);
sut.AddProduct(products[1]);
var expected = new Product[] { products[1], products[0] };
var actual = sut.Products;
Assert.AreEqual(expected, actual);
}
public void AddProductWhenAlreadyHasMaxCountAndAddedNewProduct()
{
var initialProductIds = products.Take(settings.MruProductMaxCount).Select(product => product.Id).ToList();
var sut = new MruProductsImpl(initialProductIds, factories);
sut.AddProduct(products[settings.MruProductMaxCount]);
var expected = products.Take(settings.MruProductMaxCount - 1).ToList();
expected.Insert(0, products[settings.MruProductMaxCount]);
var actual = sut.Products;
Assert.AreEqual(expected, actual);
Assert.AreEqual(expected.Select(item => item.Id), initialProductIds);
}