def test_double_alias(self):
st = SymbolTable()
integer = IntegerType()
st.registerAlias('integer', integer)
self.assertRaises(AliasAlreadyRegisteredError,
lambda: st.registerAlias('integer', integer))
def test_nested_alias(self):
st = SymbolTable()
integer = IntegerType()
real = RealType()
boolean = BooleanType()
character = CharacterType()
st.registerAlias('a', integer)
# call in scope
self.assertEqual(type(st.getAlias('a').basetype), type(IntegerType()))
# call in nested scope
st.openScope()
self.assertEqual(type(st.getAlias('a').basetype), type(IntegerType()))
# define in nested scope
st.registerAlias('a', character)
# call in nested scope
self.assertEqual(type(st.getAlias('a').basetype),
type(CharacterType()))
# call original in main scope
st.closeScope()
self.assertEqual(type(st.getAlias('a').basetype), type(IntegerType()))
def test_alias_register(self):
st = SymbolTable()
integer = IntegerType()
st.registerAlias('integer', integer)
self.assertEqual(type(st.getAlias('integer').basetype), IntegerType)
# call unknown alias
self.assertRaises(AliasNotRegisteredError, lambda: st.getAlias('a'))