def test_update(self):
st = SymbolTable()
self.assertRaises(AssertionError, st.update, "a", 1)
st.store("a", Expression(Type.int(), 1))
st.update("a", 2)
self.assertEqual(Type.int(), st.get_expression("a").type)
self.assertEqual(2, st.get_expression("a").value)
def test_get_expression(self):
st = SymbolTable()
self.assertRaises(AssertionError, st.get_expression, "a")
st.store("a", Expression(Type.list_of(Type.int()), [1]))
self.assertEqual([1], st.get_expression("a").value)
self.assertEqual(1, st.get_expression("a").value[0])
self.assertEqual(Type.list_of(Type.int()), st.get_expression("a").type)
def test_store(self):
st = SymbolTable()
st.store("a", Expression(Type.int(), 1))
self.assertTrue("a" in st)
self.assertEqual(Type.int(), st.get_expression("a").type)
self.assertEqual(1, st.get_expression("a").value)
self.assertRaises(AssertionError, st.store, "a",
Expression(Type.int(), 1))