public void AcceptReturnsCorrectResponse()
{
var r = new MockRepository(MockBehavior.Default)
{
DefaultValue = DefaultValue.Mock
};
var expected = r.Create <IBasketVisitor>().Object;
var sut = new BasketItem("Dummy product", 1, 1);
var visitorStub = r.Create <IBasketVisitor>();
visitorStub.Setup(v => v.Visit(sut)).Returns(expected);
IBasketVisitor actual = sut.Accept(visitorStub.Object);
Assert.Same(expected, actual);
}