def test_eval_with_symbol_kwarg(self):
func = mock.Mock(return_value='return value')
del func._eval # So it doesn't pretend to be symbolic
expr = Call(
func,
('arg1', 'arg2'),
{'kwarg_name': Symbol('some_symbol')})
result = expr._eval({'some_symbol': 'kwarg value'})
func.assert_called_once_with('arg1', 'arg2', kwarg_name='kwarg value')
self.assertEqual(result, 'return value')
def test_eval_with_nonsymbolic_func(self):
func = mock.Mock(return_value='return value')
del func._eval # So it doesn't pretend to be symbolic
expr = Call(func, ('arg1', 'arg2'), {'kwarg_name': 'kwarg value'})
# Ensure constructing the expression does not call the function
self.assertFalse(func.called)
result = expr._eval({})
func.assert_called_once_with('arg1', 'arg2', kwarg_name='kwarg value')
self.assertEqual(result, 'return value')