Function polkadot_node_subsystem_test_helpers::make_buffered_subsystem_context

pub fn make_buffered_subsystem_context<M, S>(
    spawner: S,
    buffer_size: usize,
) -> (TestSubsystemContext<M, SpawnGlue<S>>, TestSubsystemContextHandle<M>)

Make a test subsystem context with buffered overseer channel. Some tests (e.g. dispute-coordinator) create too many parallel operations and deadlock unless the channel is buffered. Usually buffer_size=1 is enough.