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);
}