ScenarioNetworkPolicy class

The answers one scenario has stated, and the log of what it actually asked for.

Reached as s.network. A stub is a fact about this scenario — the empty inbox, the 503, the train — and no recording of a real server can be asked to produce one on demand, which is why stating them is a separate door from ScenarioNetwork.live rather than a mode of it.

scenario('the inbox is empty', (s) async {
  s.network.get('/api/messages', json: []);
  await s.pumpWidget(const App());
  await s.screen('the empty state');
});