def test_update_values_appends(self):
v = unittest.mock.Mock()
vnew = unittest.mock.Mock()
gd = xso_query.GetDescriptor(
unittest.mock.sentinel.expr,
unittest.mock.sentinel.descriptor,
)
gd.update_values(v, vnew)
v.append.assert_called_with(vnew)
def test_eval_gets_descriptor(self):
class Bar:
pass
i1 = Bar()
i2 = Bar()
def values():
yield unittest.mock.sentinel.v1
yield unittest.mock.sentinel.v2
descriptor = unittest.mock.PropertyMock()
descriptor.side_effect = values()
expr = unittest.mock.Mock()
ec = unittest.mock.sentinel
expr.eval.return_value = [
i1,
i2,
]
gd = xso_query.GetDescriptor(expr, descriptor)
with contextlib.ExitStack() as stack:
new_values = stack.enter_context(
unittest.mock.patch.object(gd, "new_values"))
update_values = stack.enter_context(
unittest.mock.patch.object(gd, "update_values"))
new_values.return_value = unittest.mock.sentinel.vs
result = gd.eval(ec)
self.assertEqual(
result,
unittest.mock.sentinel.vs,
)
self.assertSequenceEqual(update_values.mock_calls, [
unittest.mock.call(
unittest.mock.sentinel.vs,
unittest.mock.sentinel.v1,
),
unittest.mock.call(
unittest.mock.sentinel.vs,
unittest.mock.sentinel.v2,
),
])
expr.eval.assert_called_with(ec)
def test_new_values_creates_empty_sequence(self):
gd = xso_query.GetDescriptor(
unittest.mock.sentinel.expr,
unittest.mock.sentinel.descriptor,
)
s1 = gd.new_values()
s2 = gd.new_values()
self.assertSequenceEqual(s1, [])
self.assertSequenceEqual(s2, [])
self.assertIsNot(s1, s2)