public void Should_Create_Instance_Of_Topping() { const decimal price = 1.1m; var sut = new Topping("Mushrooms", price); var serialize = sut.ShouldSerializePrice(); Assert.IsInstanceOf <Topping>(sut); Assert.NotNull(sut.Id); Assert.IsInstanceOf <Guid>(sut.Id); Assert.AreEqual(price, sut.Price); Assert.AreEqual(true, serialize); }