def test_component_detaches_from_child_after_child_is_remove():
component = Component(view=Mock(), presenter=Mock())
mock_cfactory = MockComponentFactory()
new_child = component.new_component(mock_cfactory)
component.remove_component(new_child)
assert new_child.on_destroyed.num_connections == 0
def test_component_destroy_destroys_child_components():
component = Component(view=Mock(), presenter=Mock())
mock_cfactories = [MockComponentFactory() for _ in range(3)]
mock_children = [tcast(Mock, component.new_component(mock_cfactory)) for mock_cfactory in mock_cfactories]
component.destroy()
for mock_child in mock_children:
mock_child.destroy.assert_called_once_with()
def test_component_remove_component():
component = Component(view=Mock(), presenter=Mock())
mock_cfactory = MockComponentFactory()
mock_child = tcast(Mock, component.new_component(mock_cfactory))
component.remove_component(mock_child)
mock_child.destroy.assert_called_once_with()
# Should raise an error if we try to remove again.
with pytest.raises(ValueError):
component.remove_component(mock_child)
def test_component_removes_child_if_child_is_destroyed():
component = Component(view=Mock(), presenter=Mock())
mock_cfactory = MockComponentFactory()
new_child = tcast(MockComponent, component.new_component(mock_cfactory))
new_child.sim_destroy()
# Should raise an error since child should have been automatically removed after it is destroyed.
with pytest.raises(ValueError):
component.remove_component(new_child)
# Child should not be destroyed again by previous call to `component.remove_component()`
new_child.destroy.assert_not_called()
def test_component_new_component():
mock_view = Mock()
mock_presenter = Mock()
component = Component(view=mock_view, presenter=mock_presenter)
mock_cfactory = MockComponentFactory()
new_child = component.new_component(mock_cfactory)
mock_cfactory.create.assert_called_once_with(
view_env=mock_view.extend_env.return_value,
presenter_env=mock_presenter.extend_env.return_value
)
assert new_child == mock_cfactory.mock_child