def test_send_letter():
donor = Donor("Daffey Duck")
donor.donations = [5000.24, 10000.34, 30000, 300]
letter = donor.send_letter()
assert letter.startswith("Dear Daffey Duck,")
assert "Dear Daffey Duck" in letter
#assert letter.endswith("Sincerely, -The Team\n")
assert "donation of $300.00" in letter
