def test_contains_element_type(self):
formula = "EuTiO3"
cmp = Composition(formula)
self.assertTrue(cmp.contains_element_type("lanthanoid"))
self.assertFalse(cmp.contains_element_type("noble_gas"))
self.assertTrue(cmp.contains_element_type("f-block"))
self.assertFalse(cmp.contains_element_type("s-block"))
