Function makeScriptedSession

packages/acp-adapter/test/error-mapping.test.ts:68–94

* Build a fake `Session` whose `prompt()` either rejects with a * caller-supplied error OR fans out a pre-recorded event sequence * through any subscribed listener — covering the two distinct error * paths that AcpSession.prompt routes through * `mapPromptError` / `authRequiredFromPayloa

(
  sessionId: string,
  opts: { script?: readonly Event[]; rejectWith?: Error },
)

 * `mapPromptError` / `authRequiredFromPayload`.
 */
function makeScriptedSession(
  sessionId: string,
  opts: { script?: readonly Event[]; rejectWith?: Error },
): ScriptedSession {
  const listeners = new Set<(event: Event) => void>();
  let unsubCount = 0;
  const session = {
    id: sessionId,
    prompt: async (_input: unknown) => {
      if (opts.rejectWith) throw opts.rejectWith;
      if (opts.script) {
        for (const ev of opts.script) {
          for (const fn of listeners) fn(ev);
        }
      }
    },
    cancel: async () => undefined,
    onEvent: (fn: (event: Event) => void) => {
      listeners.add(fn);
      return () => {
        unsubCount += 1;
        listeners.delete(fn);
      };
    },
  } as unknown as Session;
  return { session, unsubscribeCount: () => unsubCount };
}

const textBlock = (text: string): ContentBlock => ({ type: 'text', text });