@johnf/react-native-owl/lib/module/client/websocket.test.js

Visual regression testing for React Native

"use strict";

import { Logger } from "../logger.js";
import WS from 'jest-websocket-mock';
import { WEBSOCKET_PORT } from "../constants.js";
import { ANDROID_WS_HOST, IOS_WS_HOST } from "./constants.js";
describe('websocket.ts', () => {
  const logger = new Logger(false);
  const onMessage = jest.fn();
  beforeEach(() => {
    onMessage.mockClear();
  });
  afterEach(() => {
    WS.clean();
  });
  it('should connect to the WS server and receive messages on iOS', async () => {
    const server = new WS(`ws://${IOS_WS_HOST}:${WEBSOCKET_PORT}`);
    await require('./websocket').initWebSocket(logger, 'ios', onMessage);
    await server.connected;
    server.send('data');
    expect(onMessage).toHaveBeenCalledWith('data');
  });
  it('should connect to the WS server and receive messages on Android', async () => {
    const server = new WS(`ws://${ANDROID_WS_HOST}:${WEBSOCKET_PORT}`);
    await require('./websocket').initWebSocket(logger, 'android', onMessage);
    await server.connected;
    server.send('data');
    expect(onMessage).toHaveBeenCalledWith('data');
  });
  it('should reject when failing to connect to a WS server', async () => {
    await expect(require('./websocket').initWebSocket(logger, 'ios', onMessage)).rejects.toBeTruthy();
  });
});
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