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buildfirst/ch08/05_proxying-your-dependencies/test/mapper.js
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| var test = require('tape'); | |
| var sinon = require('sinon'); | |
| var proxyquire = require('proxyquire'); | |
| var user = { | |
| id: 123, | |
| name: 'Marian', | |
| email: 'marian@company.com' | |
| }; | |
| var mapperMock = { | |
| './models/User.js': { | |
| findOne: function (query, done) { | |
| setTimeout(done.bind(null, null, user)); | |
| } | |
| } | |
| }; | |
| test('user mapper returns a subset of user', function (t) { | |
| // Arrange | |
| var mapper = proxyquire('../src/mapper.js', mapperMock); | |
| var clock = sinon.useFakeTimers(); | |
| var cb = sinon.spy(); | |
| // Act | |
| mapper(123, cb); | |
| clock.tick(0); | |
| var result = cb.args[0][1]; | |
| var actual = Object.keys(result).sort(); | |
| var expected = ['name', 'email'].sort(); | |
| // Assert | |
| t.plan(2); | |
| t.ok(cb.calledOnce, 'called once'); | |
| t.deepEqual(actual, expected); | |
| }); |