def test_donation_date_with_hyphens(self):
		self.assertFalse(Donor.is_valid_donation_date('2030-02-06'))
	def test_donation_date_with_wrong_date(self):
		self.assertFalse(Donor.is_valid_donation_date('2030.30.30'))
	def test_donation_date_with_empty_string(self):
		self.assertTrue(Donor.is_valid_donation_date(''))
	def test_donation_date_with_letters(self):
		self.assertFalse(Donor.is_valid_donation_date('bbbb.bb.bb'))
	def test_donation_date_with_valid_string(self):
		self.assertTrue(Donor.is_valid_donation_date('2000.01.01'))