public void TestBankAccountWithdrawIsNotNaN()
{
var bankAccount = new BankAcount(3000);
bankAccount.Withdraw(300);
Assert.That(bankAccount.Amount, Is.Not.NaN);
}
public void TestBankAccountWithdrawLessThan()
{
var bankAccount = new BankAcount(3000);
bankAccount.Withdraw(300);
Assert.That(bankAccount.Amount, Is.LessThan(2700));
}
public void TestBankAccountWithdrawInRange()
{
var bankAccount = new BankAcount(3000);
bankAccount.Withdraw(300);
Assert.That(bankAccount.Amount, Is.InRange(2700 - 2700 * 0.5m, 2700));
}
public void TestBankAccountWithdraw()
{
decimal initialAmount = 3000;
var bankAccount = new BankAcount(initialAmount);
Assert.Multiple(() =>
{
decimal withdrawAmount = 300;
decimal expectedLefOverAmount = initialAmount - withdrawAmount - withdrawAmount * 0.05m;
bankAccount.Withdraw(withdrawAmount);
Assert.That(bankAccount.Amount, Is.EqualTo(expectedLefOverAmount));
withdrawAmount = 1500;
expectedLefOverAmount = bankAccount.Amount - withdrawAmount - withdrawAmount * 0.02m;
bankAccount.Withdraw(withdrawAmount);
Assert.That(bankAccount.Amount, Is.EqualTo(expectedLefOverAmount));
});
}