def test_delete_cascade(self, class_entity_repo, monkeypatch):
new_parent1 = MyEntityParent()
new_ent1 = MyEntity()
new_ent1.parent = new_parent1
new_child1 = MyEntityChild()
new_child1.parent = new_ent1
child_rel_agg = self._make_rel_agg(class_entity_repo, new_ent1)
child_rel_agg.add(new_child1)
new_parent1.id = 1
new_ent1.id = 1
new_child1.id = 1
agg = class_entity_repo.get_aggregate(IMyEntity)
child_agg = class_entity_repo.get_aggregate(IMyEntityChild)
assert len(list(child_agg.iterator())) == 1
assert len(list(agg.iterator())) == 1
assert new_ent1.children == [new_child1]
assert new_child1.parent == new_ent1
csc = DEFAULT_CASCADE | RELATION_OPERATIONS.REMOVE
children_attr = get_domain_class_attribute(MyEntity, 'children')
parent_attr = get_domain_class_attribute(MyEntityChild, 'parent')
monkeypatch.setattr(children_attr, 'cascade', csc)
monkeypatch.setattr(parent_attr, 'cascade', csc)
child_rel_agg.remove(new_child1)
assert new_ent1.children == []
assert new_child1.parent is None
assert len(list(child_agg.iterator())) == 0
if self.__class__.__name__.startswith('TestMemory'):
# FIXME: Transparent modification of RDB mapper cascades
# does not work yet.
assert len(list(agg.iterator())) == 0
assert len(list(child_rel_agg.iterator())) == 0
def test_nested_with_invalid_collection_type(self, class_entity_repo):
session = class_entity_repo.session_factory()
ent = MyEntity()
child = MyEntityChild()
ent.children = (child,)
with pytest.raises(ValueError):
session.add(MyEntity, ent)
ent.id = 0
child.id = 0
with pytest.raises(ValueError) as cm:
session.load(MyEntity, ent)
assert cm.value.args[0].startswith('Do not know')
def _make_child(self, child_agg, child_id=0):
new_parent = MyEntityParent()
new_ent = MyEntity()
new_ent.parent = new_parent
new_child = MyEntityChild()
new_ent.children.append(new_child)
if new_child.parent is None:
new_child.parent = new_ent
child_agg.add(new_child)
new_parent.id = child_id
new_ent.id = child_id
new_child.id = child_id
return new_child
def create_entity(entity_id=0, entity_text=None):
my_entity = MyEntity(text=entity_text)
my_entity.id = entity_id
my_entity_parent = MyEntityParent()
my_entity_parent.id = entity_id
my_entity.parent = my_entity_parent
my_entity_child = MyEntityChild()
my_entity_child.id = entity_id
my_entity.children.append(my_entity_child)
my_entity_grandchild = MyEntityGrandchild()
my_entity_grandchild.id = entity_id
my_entity_child.children.append(my_entity_grandchild)
# If we run with the SQLAlchemy backend, the back references are populated
# automatically.
if my_entity_child.parent is None:
my_entity_child.parent = my_entity
if my_entity_grandchild.parent is None:
my_entity_grandchild.parent = my_entity_child
return my_entity
def _make_test_entity_member():
parent = MyEntityParent()
entity = MyEntity(parent=parent)
if parent.child is None:
parent.child = entity
child = MyEntityChild()
entity.children.append(child)
if child.parent is None:
child.parent = entity
grandchild = MyEntityGrandchild()
child.children.append(grandchild)
if grandchild.parent is None:
grandchild.parent = child
coll = create_staging_collection(IMyEntity)
mb = coll.create_member(entity)
parent.id = 0
entity.id = 0
child.id = 0
grandchild.id = 0
return mb
def _make_test_entity_member():
parent = MyEntityParent()
entity = MyEntity(parent=parent)
if parent.child is None:
parent.child = entity
child = MyEntityChild()
entity.children.append(child)
if child.parent is None:
child.parent = entity
grandchild = MyEntityGrandchild()
child.children.append(grandchild)
if grandchild.parent is None:
grandchild.parent = child
coll = create_staging_collection(IMyEntity)
mb = coll.create_member(entity)
parent.id = 0
entity.id = 0
child.id = 0
grandchild.id = 0
return mb
def create_entity(entity_id=0, entity_text=None):
my_entity = MyEntity(text=entity_text)
my_entity.id = entity_id
my_entity_parent = MyEntityParent()
my_entity_parent.id = entity_id
my_entity.parent = my_entity_parent
my_entity_child = MyEntityChild()
my_entity_child.id = entity_id
my_entity_child.parent = my_entity
if len(my_entity.children) == 0:
# Tests that use the ORM will not need to go here.
my_entity.children.append(my_entity_child)
assert len(my_entity.children) == 1
my_entity_grandchild = MyEntityGrandchild()
my_entity_grandchild.id = entity_id
my_entity_grandchild.parent = my_entity_child
# Tests that use the ORM will not need this.
if len(my_entity.children) == 0:
my_entity.children.append(my_entity_child)
if len(my_entity_child.children) == 0:
my_entity_child.children.append(my_entity_grandchild)
return my_entity
def create_entity(entity_id=0, entity_text=None):
my_entity = MyEntity(text=entity_text)
my_entity.id = entity_id
my_entity_parent = MyEntityParent()
my_entity_parent.id = entity_id
my_entity.parent = my_entity_parent
my_entity_child = MyEntityChild()
my_entity_child.id = entity_id
my_entity_child.parent = my_entity
if len(my_entity.children) == 0:
# Tests that use the ORM will not need to go here.
my_entity.children.append(my_entity_child)
assert len(my_entity.children) == 1
my_entity_grandchild = MyEntityGrandchild()
my_entity_grandchild.id = entity_id
my_entity_grandchild.parent = my_entity_child
# Tests that use the ORM will not need this.
if len(my_entity.children) == 0:
my_entity.children.append(my_entity_child)
if len(my_entity_child.children) == 0:
my_entity_child.children.append(my_entity_grandchild)
return my_entity
