class TestBinding:
@pytest.fixture(autouse=True)
def fixture(self):
self.src_bindable = MockBindable()
self.dst_bindable = MockBindable()
self.binding = Binding(src=self.src_bindable, dst=self.dst_bindable)
def test_dst_is_updated_with_src_value(self):
self.dst_bindable.set.assert_called_once_with(
self.src_bindable.get.return_value)
def test_src_poke(self):
self.src_bindable.reset()
self.dst_bindable.reset()
self.src_bindable.poke()
self.dst_bindable.set.assert_called_once_with(
self.src_bindable.get.return_value)
def test_dst_poke(self):
self.src_bindable.reset()
self.dst_bindable.reset()
self.dst_bindable.poke()
self.src_bindable.set.assert_called_once_with(
self.dst_bindable.get.return_value)
def test_unbind_stops_propagating_changes(self):
self.src_bindable.reset()
self.dst_bindable.reset()
self.binding.unbind()
self.src_bindable.poke()
self.dst_bindable.poke()
self.src_bindable.get.assert_not_called()
self.src_bindable.set.assert_not_called()
self.dst_bindable.get.assert_not_called()
self.dst_bindable.set.assert_not_called()
def test_unbind_deletes_references_to_src_and_dst(self):
src_bindable_wr = weakref.ref(self.src_bindable)
dst_bindable_wr = weakref.ref(self.dst_bindable)
del self.src_bindable
del self.dst_bindable
gc.collect()
assert src_bindable_wr() is not None
assert dst_bindable_wr() is not None
self.binding.unbind()
gc.collect()
assert src_bindable_wr() is None
assert dst_bindable_wr() is None
class TestBinding_With_ToDstTransform:
@pytest.fixture(autouse=True)
def fixture(self):
self.src_bindable = MockBindable()
self.dst_bindable = MockBindable()
# Can't use a Mock object for to_dst() since it can sometimes have global referrers that prevent it from being
# garbage collected (which is required for one of the test cases)
def to_dst(x):
self.to_dst_called_with.append(x)
return self.to_dst_return_value
self.to_dst_called_with = []
self.to_dst_return_value = object()
self.to_dst = to_dst
self.binding = Binding(src=self.src_bindable, dst=self.dst_bindable, to_dst=self.to_dst)
def test_dst_is_updated_with_src_value(self):
self.dst_bindable.set.assert_called_once_with(
self.to_dst_return_value)
assert self.to_dst_called_with == [self.src_bindable.get.return_value]
def test_src_poke(self):
self.src_bindable.reset()
self.dst_bindable.reset()
self.to_dst_called_with.clear()
self.src_bindable.poke()
self.dst_bindable.set.assert_called_once_with(
self.to_dst_return_value)
assert self.to_dst_called_with == [self.src_bindable.get.return_value]
def test_unbind_deletes_references_to_to_dst(self):
to_dst_wr = weakref.ref(self.to_dst)
del self.to_dst
gc.collect()
assert to_dst_wr() is not None
self.binding.unbind()
gc.collect()
assert to_dst_wr() is None
def fixture(self):
self.src_bindable = MockBindable()
self.dst_bindable = MockBindable()
# Can't use a Mock object for to_dst() since it can sometimes have global referrers that prevent it from being
# garbage collected (which is required for one of the test cases)
def to_src(x):
self.to_src_called_with.append(x)
return self.to_src_return_value
self.to_src_called_with = []
self.to_src_return_value = object()
self.to_src = to_src
self.binding = Binding(src=self.src_bindable, dst=self.dst_bindable, to_src=self.to_src)
def fixture(self):
self.src_bindable = MockBindable()
self.dst_bindable = MockBindable()
self.binding = Binding(src=self.src_bindable, dst=self.dst_bindable, one_way=True)
self.src_bindable.reset()
self.dst_bindable.reset()
def view_ready(self) -> None:
self.__data_bindings.extend([
Binding(src=self._model.bn_thresh,
dst=self.view.bn_thresh,
to_dst=lambda x: x*100,
to_src=lambda x: x/100),
])
self.__event_connections.extend([
self.view.bn_tool_button_is_active.on_changed.connect(
self._hdl_tool_button_is_active_changed
)
])
self._hdl_tool_button_is_active_changed()
def fixture(self):
self.src_bindable = MockBindable()
self.dst_bindable = MockBindable()
self.binding = Binding(src=self.src_bindable, dst=self.dst_bindable)
def fixture(self):
self.src_bindable = MockBindable()
self.dst_bindable = MockBindable()
self.dst_bindable.get.side_effect = NotImplementedError
self.binding = Binding(src=self.src_bindable, dst=self.dst_bindable)