@whook/whook/dist/services/repl.test.js

Build strong and efficient REST web services.

import { describe, test, beforeEach, jest, expect } from '@jest/globals';
import initREPL from './repl.js';
import { PassThrough } from 'node:stream';
import streamtest from 'streamtest';
describe('initREPL', () => {
    const $ready = Promise.resolve(undefined);
    const $instance = {
        registered: jest.fn(),
        getRegisteredInitializer: jest.fn(),
    };
    const $injector = jest.fn();
    const $dispose = jest.fn();
    const log = jest.fn();
    beforeEach(() => {
        $injector.mockReset();
        $dispose.mockReset();
        log.mockReset();
    });
    test('should work as expected', async () => {
        const stdin = new PassThrough();
        const [stdout, textPromise] = streamtest.toText();
        const injectorPromise = new Promise((resolve) => {
            $injector.mockImplementation(() => {
                resolve();
                return Promise.resolve({
                    time: () => Date.parse('2020-01-01T00:00:00Z'),
                });
            });
        });
        const { dispose } = await initREPL({
            $ready,
            $instance: $instance,
            $injector,
            $dispose,
            log,
            stdin: stdin,
            stdout: stdout,
        });
        // Need to wait a bit
        await Promise.resolve();
        await Promise.resolve();
        stdin.write('.inject time;\n\n');
        await injectorPromise;
        stdin.write('time();\n\n');
        $instance.registered.mockReturnValueOnce(['time', 'log']);
        stdin.write('.registered\n\n');
        if (dispose) {
            await dispose();
        }
        stdout.end();
        expect({
            text: await textPromise,
            disposeCalls: $dispose.mock.calls,
            injectorCalls: $injector.mock.calls,
            logCalls: log.mock.calls.filter(([type]) => !type.endsWith('stack')),
        }).toMatchInlineSnapshot(`
     {
       "disposeCalls": [
         [],
       ],
       "injectorCalls": [
         [
           [
             "time;",
           ],
         ],
       ],
       "logCalls": [
         [
           "debug",
           "🖵 - Initializing the REPL service!",
         ],
       ],
       "text": "
         _      ____             __     ___  _______  __ 
         | | /| / / /  ___  ___  / /__  / _ \\/ __/ _ \\/ / 
         | |/ |/ / _ \\/ _ \\/ _ \\/  '_/ / , _/ _// ___/ /__
         |__/|__/_//_/\\___/\\___/_/\\_\\ /_/|_/___/_/  /____/

                Inject services with \`.inject\`.
                > .inject log
                > log('info', '👋 - Hello REPL!'); 
     whook> whook> whook> 1577836800000
     whook> whook> # Registered Services:
     - time (I),
     - log.
     (I: instantiated)
     whook> whook> ",
     }
    `);
    });
});
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