def test_nothing(self):
     self.assertFalse(Validate.validate_blood_type(""))
 def test_a(self):
     self.assertFalse(Validate.validate_blood_type("A"))
 def test_long(self):
     self.assertFalse(Validate.validate_blood_type("ggsiiuh sv448hg hsuh94"))
 def test_ofalse(self):
     self.assertFalse(Validate.validate_blood_type("O+"))
 def test_null(self):
     self.assertFalse(Validate.validate_blood_type("0"))
 def test_oplus(self):
     self.assertTrue(Validate.validate_blood_type("0+"))
 def test_abminusupper(self):
     self.assertTrue(Validate.validate_blood_type("AB-"))
 def test_bpluslower(self):
     self.assertTrue(Validate.validate_blood_type("b+"))