def test_methanol(self):
     self.assertTrue(validate_elements('c,h,o'))
 def test_empty(self):
     self.assertFalse(validate_elements(''))
 def test_quit(self):
     self.assertFalse(validate_elements('quit'))
 def test_methanol(self):
     self.assertTrue(validate_elements('c,h,o'))
 def test_empty(self):
     self.assertFalse(validate_elements(''))
 def test_quit(self):
     self.assertFalse(validate_elements('quit'))