public void DeductionShouldBeEqualToFullyExemptDeductionWhenOneFullyExemptDonationUnder80GIsAdded()
{
DonationsUnder80G donationsUnder80G = new DonationsUnder80G();
donationsUnder80G.AddDonation(new FullyExemptDonation(10));
Assert.AreEqual(10, donationsUnder80G.GetDeduction(), 0.001);
}