public void WithdrawAmount_GivenValidAmount_UpdateBalanceAndWithdrawnAmounts()
{
var sut = new AccountBuilder().WithBalance(0.02m).Build();
sut.WithdrawAmount(0.01m);
Assert.Equal(0.01m, sut.Balance);
Assert.Equal(-0.01m, sut.Withdrawn);
}
public void WithdrawAmount_GivenBalanceIsAboveLowBalanceThreshold_DoNotNotifyUser()
{
var notificationServiceMock = new Mock <INotificationService>();
var user = new User(notificationServiceMock.Object);
var sut = new AccountBuilder()
.WithBalance(Account.LowBalanceThreshold + 0.01m)
.WithUser(user)
.Build();
sut.WithdrawAmount(0.01m);
notificationServiceMock.Verify(service => service.NotifyFundsLow(It.IsAny <string>()), Times.Never);
}
public void WithdrawAmount_GivenBalanceIsBelowLowBalanceThreshold_NotifyUser()
{
var notificationServiceMock = new Mock <INotificationService>();
var user = new User(notificationServiceMock.Object);
user.Email = "*****@*****.**";
var sut = new AccountBuilder()
.WithBalance(0.02m)
.WithUser(user)
.Build();
sut.WithdrawAmount(0.01m);
notificationServiceMock.Verify(service => service.NotifyFundsLow(user.Email));
}
public void WithdrawAmount_GivenInvalidAmount_ThrowException()
{
var sut = new AccountBuilder().WithBalance(0m).Build();
Assert.Throws <InvalidOperationException>(() => sut.WithdrawAmount(0.01m));
}