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())