public void TestCalculateCheckingInterestForAllTransactions()
{
Transaction[] trx = new Transaction[]
{
new Transaction(25000, new DateTime(1970, 1, 1)),
new Transaction(25000, new DateTime(1970, 2, 1)),
new Transaction(25000, new DateTime(1970, 3, 1)),
new Transaction(25000, new DateTime(1970, 4, 1)),
};
CheckingInterestCalculator calculator = new CheckingInterestCalculator();
double interest = calculator.Calculate(trx, DateTime.MaxValue);
Assert.AreEqual(100000.0 * 0.001, interest, DOUBLE_DELTA);
}
public void TestCalculateCheckingInterestOnSpecificDate()
{
Transaction[] trx = new Transaction[]
{
new Transaction(25000, new DateTime(1970, 1, 1)),
new Transaction(25000, new DateTime(1970, 2, 1)),
new Transaction(25000, new DateTime(1970, 3, 1)),
new Transaction(25000, new DateTime(1970, 4, 1)),
};
CheckingInterestCalculator calculator = new CheckingInterestCalculator();
double interest = calculator.Calculate(trx, new DateTime(1970, 2, 15));
Assert.AreEqual(50000.0 * 0.001, interest, DOUBLE_DELTA);
interest = calculator.Calculate(trx, new DateTime(1970, 4, 15));
Assert.AreEqual(100000.0 * 0.001, interest, DOUBLE_DELTA);
}