public async Task Given_InvalidUserCredentials_Should_Throw_When_ConsultingBalance()
{
await ShouldEx.ThrowsAsync <InvalidCredentialsException>(async() =>
await _service.GetBalance(_invalidAccount, _invalidPassword));
}
public async Task Given_InvalidUserCredentials_Should_Throw_When_Withdrawing()
{
await ShouldEx.ThrowsAsync <InvalidCredentialsException>(async() =>
await _service.Withdraw(_invalidAccount, _invalidPassword, _amountToDeposit));
}