git.squeep.com Git - squeep-test-helper/blob - test/example.js

   1 'use strict';
   2 const { StubDatabase, StubLogger } = require('../index');
   3 const sinon = require('sinon');
   4 const assert = require('node:assert');
   5
   6 class App {
   7   constructor(logger, db) {
   8     this.logger = logger;
   9     this.db = db;
  10   }
  11   doAThing() {
  12     this.db.valueGet();
  13     this.logger.error('doAThing', 'oh no');
  14   }
  15 }
  16
  17 class AppDB extends StubDatabase {
  18   constructor() {
  19     super(sinon);
  20   }
  21   get _stubFns() {
  22     return [
  23       ...super._stubFns,
  24       'valueGet',
  25       'valueSet',
  26     ];
  27   }
  28 }
  29
  30 const logger = new StubLogger(sinon);
  31 const db = new AppDB();
  32
  33 describe('App Test', function () {
  34   beforeEach(function () {
  35     db._reset();
  36     logger._reset();
  37   });
  38   it('uses stubs', function () {
  39     const app = new App(logger, db);
  40     app.doAThing();
  41     assert(logger.error.called);
  42     assert(db.valueGet.called);
  43   });
  44 });