def test_checkWeight_validValue_returnTrue(self):
donor = Donor()
donor.weight = "60"
self.assertTrue(donor.check_weight())
def test_checkWeight_emptyString_returnFalse(self):
donor = Donor()
donor.weight = ""
self.assertFalse(donor.check_weight())
def test_checkWeight_invalidValue_returnFalse(self):
donor = Donor()
donor.weight = "45"
self.assertFalse(donor.check_weight())
