def test_named_child_replacement_event_calls(self):
"""Replacing a named child calls the pre_detach and post_detach methods on the final controller in the stack that
is being replaced."""
child1 = BaseViewController()
child1.post_attach = MagicMock()
child1.pre_detach = MagicMock()
child1.post_detach = MagicMock()
child2 = BaseViewController()
self.root.set_named_child('child-key', child1)
child1.post_attach.assert_called_with()
self.root.set_named_child('child-key', child2)
child1.pre_detach.assert_called_with()
child1.post_detach.assert_called_with()
def test_named_child_pop(self):
"""After pushing a child to a named stack, it can be popped back off."""
child1 = BaseViewController()
child2 = BaseViewController()
child2.post_detach = MagicMock()
child2.pre_detach = MagicMock()
self.root.push_named_child('child-key', child1)
self.root.push_named_child('child-key', child2)
retrieved_child_2 = self.root.pop_named_child('child-key')
self.assertEqual(child2, retrieved_child_2)
child2.pre_detach.assert_called_with()
child2.post_detach.assert_called_with()
self.assertEqual(self.root.get_named_child('child-key'), child1)
def test_named_child_replacement_event_calls(self):
"""Replacing a named child calls the pre_detach and post_detach methods on the final controller in the stack that
is being replaced."""
child1 = BaseViewController()
child1.post_attach = MagicMock()
child1.pre_detach = MagicMock()
child1.post_detach = MagicMock()
child2 = BaseViewController()
self.root.set_named_child('child-key', child1)
child1.post_attach.assert_called_with()
self.root.set_named_child('child-key', child2)
child1.pre_detach.assert_called_with()
child1.post_detach.assert_called_with()
def test_named_child_pop(self):
"""After pushing a child to a named stack, it can be popped back off."""
child1 = BaseViewController()
child2 = BaseViewController()
child2.post_detach = MagicMock()
child2.pre_detach = MagicMock()
self.root.push_named_child('child-key', child1)
self.root.push_named_child('child-key', child2)
retrieved_child_2 = self.root.pop_named_child('child-key')
self.assertEqual(child2, retrieved_child_2)
child2.pre_detach.assert_called_with()
child2.post_detach.assert_called_with()
self.assertEqual(self.root.get_named_child('child-key'), child1)
def test_named_child_push(self):
"""After pushing a child to a named stack, it is then retrievable via child. The previous final controller on
the stack should have its pre_detach and post_detach methods called."""
child1 = BaseViewController()
child1.pre_detach = MagicMock()
child1.post_detach = MagicMock()
child2 = BaseViewController()
child2.post_attach = MagicMock()
self.root.push_named_child('child-key', child1)
self.root.push_named_child('child-key', child2)
self.assertEqual(self.root.get_named_child('child-key'), child2)
child1.pre_detach.assert_called_with()
child1.post_detach.assert_called_with()
child2.post_attach.assert_called_with()
def test_named_child_push(self):
"""After pushing a child to a named stack, it is then retrievable via child. The previous final controller on
the stack should have its pre_detach and post_detach methods called."""
child1 = BaseViewController()
child1.pre_detach = MagicMock()
child1.post_detach = MagicMock()
child2 = BaseViewController()
child2.post_attach = MagicMock()
self.root.push_named_child('child-key', child1)
self.root.push_named_child('child-key', child2)
self.assertEqual(self.root.get_named_child('child-key'), child2)
child1.pre_detach.assert_called_with()
child1.post_detach.assert_called_with()
child2.post_attach.assert_called_with()