Scenario can simulate StoredState. You can define it on the input side as:
from ops.charm import CharmBase
from ops.framework import StoredState as Ops_StoredState, Framework
from scenario import State, StoredState
class MyCharmType(CharmBase):
my_stored_state = Ops_StoredState()
def __init__(self, framework: Framework):
super().__init__(framework)
assert self.my_stored_state.foo == 'bar' # this will pass!
state = State(stored_state=[
StoredState(
owner_path="MyCharmType",
name="my_stored_state",
content={
'foo': 'bar',
'baz': {42: 42},
})
])
And the charm’s runtime will see self.stored_State.foo and .baz as expected. Also, you can run assertions on it on
the output side the same as any other bit of state.