@brighte/redux-saga-test-plan/src/utils/async.js

Test Redux Saga with an easy plan

// @flow
const setImmediate = (glob =>
  glob.setImmediate || ((fn, ...args) => glob.setTimeout(fn, 0, ...args)))(
  typeof window !== 'undefined' ? window : global,
);

export function schedule(fn: Function, args?: any[] = []): Promise<any> {
  return new Promise(resolve => {
    setImmediate(() => {
      const result = fn(...args);
      resolve(result);
    });
  });
}

export function delay(time: number): Promise<void> {
  return new Promise(resolve => {
    setTimeout(resolve, time);
  });
}