public void WhenSuccess_ThenSuccessMessage() { // Arrange const double debitAmount = 4.55; const double expected = 7.44; _mockBankAccountObject.Create("Mr. Bryan Walton", BeginningBalance); // Act _mockBankAccountObject.Debit(debitAmount); // 11.99 - 4.55 = 7.44 // Assert Assert.AreEqual(expected, _mockBankAccountObject.Balance, 0.001, "Account not debited correctly"); }