Mock DM service with an inbound-message control.
Inject an inbound message from a fixture account; returns it, or undefined for an unknown sender.
undefined
Optional
Flip runtime availability (dm.status.available).
dm.status.available
const dm = createMockDmService();dm.receive('bob', 'ping'); Copy
const dm = createMockDmService();dm.receive('bob', 'ping');
Mock DM service with an inbound-message control.