bottender-compose/lib/__tests__/parallel.spec.js

An utility library for bottender and higher-order handlers

"use strict";

// FIXME: export public API for testing
const {
  run
} = require('bottender/dist/bot/Bot');

const parallel = require('../parallel');

const {
  sendText
} = require('..');

it('should have correct name', async () => {
  const Haha = sendText('haha');
  const Wow = sendText('wow');
  const Cool = sendText('cool');
  const Parallel = parallel([Haha, Wow, Cool]);
  expect(Parallel.name).toEqual('Parallel(SendText(haha), SendText(wow), SendText(cool))');
});
it('should create an action that runs the actions in parallel', async () => {
  let resolveHahaPromise;
  const hahaPromise = new Promise(resolve => {
    resolveHahaPromise = resolve;
  });

  const Haha = async context => {
    await context.sendText('haha');
    await hahaPromise;
  };

  let resolveWowPromise;
  const wowPromise = new Promise(resolve => {
    resolveWowPromise = resolve;
  });

  const Wow = async context => {
    await context.sendText('wow');
    await wowPromise;
  };

  const Parallel = parallel([Haha, Wow]);
  const context = {
    sendText: jest.fn(() => Promise.resolve())
  };
  const promise = run(Parallel)(context, {});
  expect(context.sendText).toBeCalledWith('haha');
  expect(context.sendText).toBeCalledWith('wow');
  resolveHahaPromise();
  resolveWowPromise();
  await promise;
});
it('should pass extra args to underlying action', async () => {
  const Haha = jest.fn(async (context, {
    name
  }) => {
    await context.sendText(`haha ${name}`);
  });
  const Wow = jest.fn(async (context, {
    name
  }) => {
    await context.sendText(`wow ${name}`);
  });
  const Parallel = parallel([Haha, Wow]);
  const context = {
    sendText: jest.fn(() => Promise.resolve())
  };
  await run(Parallel)(context, {
    name: 'John'
  });
  expect(context.sendText).toBeCalledWith('haha John');
  expect(context.sendText).toBeCalledWith('wow John');
});
it('should support nested actions', async () => {
  const Haha = () => sendText('haha');

  const Wow = () => sendText('wow');

  const Parallel = parallel([Haha, Wow]);
  const context = {
    sendText: jest.fn(() => Promise.resolve())
  };
  await run(Parallel)(context, {});
  expect(context.sendText).toBeCalledWith('haha');
  expect(context.sendText).toBeCalledWith('wow');
});