def test_singleton(self):
self.assertTrue(M.dummy() is M.dummy())
self.assertTrue(M.dummy('a') is M.dummy('a'))
self.assertTrue(M.dummy('a') is not M.dummy('b'))
self.assertTrue(M.dummy('a') is not M.unknown('a'))
self.assertTrue(M.dummy('C') is not M.element('C'))
self.assertTrue(M.element('C') is M.element('C'))
def test_type(self):
self.assertEqual(M.dummy().type, "dummy")
self.assertEqual(M.unknown().type, "")
self.assertEqual(M.element('O').type, "element")
self.assertEqual(M.cgparticle('ala').type, "cgparticle")
def test_atom_descriptor(self):
self.assertRaises(TypeError, lambda: M.dummy(42))
self.assertRaises(ValueError, lambda: M.element(42))
self.assertRaises(ValueError, lambda: M.element("X"))
