Function changeCountDelay

packages/dva-core/test/effects.test.js:76–79

({ payload }, { put, call })

      },
      effects: {
        *changeCountDelay({ payload }, { put, call }) {
          yield call(delay, 200);
          yield put({ type: 'dump', payload: { count: payload } });
        },
        *process({ payload }, { put, select }) {
          yield put.resolve({ type: 'changeCountDelay', payload });
          const count = yield select(state => state.counter.count);