def test_error_when_removing_from_different_instance():
session1 = Session({"examples/1": {}})
session2 = Session({})
ex1 = session1.get(Example, 1)
with pytest.raises(RuntimeError):
session2.remove(ex1)
def test_remove_is_idempotent():
data = {"examples/1": {"name": "Paula"}}
session = Session(data)
ex1 = session.get(Example, 1)
session.remove(ex1)
session.remove(ex1)
session.flush()
def test_get_then_remove_entity():
data = {"examples/1": {"name": "Paula"}}
session = Session(data)
ex1 = session.get(Example, 1)
session.remove(ex1)
session.flush()
assert data == {}
def test_add_then_remove_entity_has_no_effect():
data = {}
session = Session(data)
ex1 = Example(pk=1, name="Horse")
session.add(ex1)
session.remove(ex1)
session.flush()
assert data == {}