import { describe, expect, test } from 'bun:test';

import { ChildStoreManager } from './child-store';

describe('ChildStoreManager.subscribeAllSelected', () => {
  test('ignores unrelated child-store updates', () => {
    const manager = new ChildStoreManager();
    const child = manager.ensureChild('/workspace', { bootstrap: false });
    let notifications = 0;
    const unsubscribe = manager.subscribeAllSelected((state) => state.session, () => {
      notifications += 1;
    });

    child.setState({ session_status: { session: { type: 'busy' } } });
    expect(notifications).toBe(0);

    child.setState({ session: [...child.getState().session] });
    expect(notifications).toBe(1);

    unsubscribe();
    manager.disposeAll();
  });

  test('notifies when the child-store registry changes', () => {
    const manager = new ChildStoreManager();
    let notifications = 0;
    const unsubscribe = manager.subscribeAllSelected((state) => state.session, () => {
      notifications += 1;
    });

    manager.ensureChild('/workspace', { bootstrap: false });
    expect(notifications).toBe(1);

    unsubscribe();
    manager.disposeAll();
  });
});