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tests: add unit tests for yandex user id module
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import { yandexIdSubmodule, storage } from '../../../modules/yandexIdSystem.js'; | ||
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const MIN_METRICA_ID_LEN = 17; | ||
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/** | ||
* @typedef {import('sinon').SinonStub} SinonStub | ||
* @typedef {import('sinon').SinonSandbox} SinonSandbox | ||
*/ | ||
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describe('YandexId module', () => { | ||
/** @type {SinonSandbox} */ | ||
let sandbox; | ||
/** @type {SinonStub} */ | ||
let setCookieStub; | ||
/** @type {SinonStub} */ | ||
let getCookieStub; | ||
/** @type {SinonStub} */ | ||
let getLocalStorageStub; | ||
/** @type {SinonStub} */ | ||
let setLocalStorageStub; | ||
/** @type {SinonStub} */ | ||
let cookiesAreEnabledStub; | ||
/** @type {SinonStub} */ | ||
let getCryptoRandomValuesStub; | ||
/** @type {SinonStub} */ | ||
let randomStub; | ||
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beforeEach(() => { | ||
sandbox = sinon.sandbox.create(); | ||
getCookieStub = sandbox.stub(storage, 'getCookie'); | ||
setCookieStub = sandbox.stub(storage, 'setCookie'); | ||
getLocalStorageStub = sandbox.stub(storage, 'getDataFromLocalStorage'); | ||
setLocalStorageStub = sandbox.stub(storage, 'setDataInLocalStorage'); | ||
cookiesAreEnabledStub = sandbox.stub(storage, 'cookiesAreEnabled'); | ||
cookiesAreEnabledStub.returns(true); | ||
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getCryptoRandomValuesStub = sandbox | ||
.stub(window.crypto, 'getRandomValues') | ||
.callsFake((bufferView) => { | ||
bufferView[0] = 10000; | ||
}); | ||
randomStub = sandbox.stub(window.Math, 'random').returns(0.555); | ||
}); | ||
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afterEach(() => { | ||
sandbox.restore(); | ||
}); | ||
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describe('getId()', () => { | ||
describe('user id format', () => { | ||
it('matches Yandex Metrica format', () => { | ||
const generatedId = yandexIdSubmodule.getId().id; | ||
expect(isNaN(generatedId)).to.be.false; | ||
expect(generatedId).to.have.length.greaterThanOrEqual( | ||
MIN_METRICA_ID_LEN | ||
); | ||
}); | ||
}); | ||
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describe('when user id is set', () => { | ||
const dummyId = Array(MIN_METRICA_ID_LEN).fill(1).join(''); | ||
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beforeEach(() => { | ||
getCookieStub.returns(dummyId); | ||
}); | ||
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it('returns id', () => { | ||
const { id } = yandexIdSubmodule.getId(); | ||
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expect(id).to.equal(dummyId); | ||
}); | ||
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it('does not change existing id', () => { | ||
yandexIdSubmodule.getId(); | ||
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expect(setCookieStub.lastCall.args[1]).to.equal(dummyId); | ||
}); | ||
}); | ||
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describe('when user id is not set', () => { | ||
beforeEach(() => { | ||
getCookieStub.returns(undefined); | ||
}); | ||
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it('returns id', () => { | ||
const id = yandexIdSubmodule.getId(); | ||
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expect(id).not.to.be.undefined; | ||
}); | ||
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it('sets id', () => { | ||
yandexIdSubmodule.getId() | ||
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expect(setCookieStub.calledOnce).to.be.true; | ||
}); | ||
}); | ||
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describe('storage interaction', () => { | ||
describe('when cookie storage is disabled', () => { | ||
it('should not use storage api', () => { | ||
cookiesAreEnabledStub.returns(false); | ||
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yandexIdSubmodule.getId(); | ||
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expect(cookiesAreEnabledStub.called).to.be.true; | ||
expect(getCookieStub.called).to.be.false; | ||
expect(setCookieStub.called).to.be.false; | ||
expect(getLocalStorageStub.called).to.be.false; | ||
expect(setLocalStorageStub.called).to.be.false; | ||
}); | ||
}); | ||
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it('should use cookie', () => { | ||
yandexIdSubmodule.getId(); | ||
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expect(cookiesAreEnabledStub.called).to.be.true; | ||
expect(getCookieStub.calledOnce).to.be.true; | ||
expect(setCookieStub.calledOnce).to.be.true; | ||
}); | ||
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it('should not use localStorage', () => { | ||
yandexIdSubmodule.getId(); | ||
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expect(getLocalStorageStub.called).to.be.false; | ||
expect(setLocalStorageStub.called).to.be.false; | ||
}); | ||
}); | ||
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describe('crypto', () => { | ||
it('uses Math.random when crypto is not available', () => { | ||
sandbox.stub(window, 'crypto').value(undefined); | ||
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yandexIdSubmodule.getId(); | ||
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expect(randomStub.calledOnce).to.be.true; | ||
expect(getCryptoRandomValuesStub.called).to.be.false; | ||
}); | ||
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it('uses crypto when it is available', () => { | ||
yandexIdSubmodule.getId(); | ||
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expect(randomStub.called).to.be.false; | ||
expect(getCryptoRandomValuesStub.calledOnce).to.be.true; | ||
}); | ||
}); | ||
}); | ||
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describe('decode()', () => { | ||
it('should not transform value', () => { | ||
const value = 'test value'; | ||
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expect(yandexIdSubmodule.decode(value).yandexId).to.equal(value); | ||
}); | ||
}); | ||
}); |