using DominionBase.Currencies; using Microsoft.VisualStudio.TestTools.UnitTesting; using System; namespace DominionBaseUnitTest.Currencies { [TestClass] public class UnitTestCurrencyBase { [TestMethod] [ExpectedException(typeof(NotSupportedException))] public void Test_CurrencyBase_MixedTypes() { var coin = new Coin(5); var debt = new Debt(3); var currency1 = coin + debt; } } }