public void Test_ToanService_As_Moq() { //Arrangement double beginningBalance = 11.99; BankAccount account = new() { CustomerName = "Mr. Dionysios Dionysiou", Balance = beginningBalance }; Mock <LoanService> loanServiceMock = new(); loanServiceMock.Setup(x => x.CheckEmployeeMethod()).Returns(true); BankService bankService = new BankService(loanServiceMock.Object) { BankAccount = account }; //action bool result = bankService.CheckCustomer(); bool expected = true; //Assertion Assert.AreEqual(expected, result); }