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import {
renameKey,
getReferrersCache,
addExperimentContext,
addReferrersCacheEntry,
filterOldReferrersCacheEntries,
} from '~/tracking/utils';
import { TRACKING_CONTEXT_SCHEMA } from '~/experimentation/constants';
import { REFERRER_TTL, URLS_CACHE_STORAGE_KEY } from '~/tracking/constants';
import { TEST_HOST } from 'helpers/test_constants';
jest.mock('~/experimentation/utils', () => ({
getExperimentData: jest.fn().mockReturnValue({}),
}));
describe('~/tracking/utils', () => {
beforeEach(() => {
window.gl = window.gl || {};
window.gl.snowplowStandardContext = {};
});
describe('addExperimentContext', () => {
const options = {
category: 'root:index',
action: 'generic',
};
it('returns same options if no experiment is provided', () => {
expect(addExperimentContext({ options })).toStrictEqual({ options });
});
it('adds experiment if provided', () => {
const experiment = 'TEST_EXPERIMENT_NAME';
expect(addExperimentContext({ experiment, ...options })).toStrictEqual({
...options,
context: { data: {}, schema: TRACKING_CONTEXT_SCHEMA },
});
});
});
describe('renameKey', () => {
it('renames a given key', () => {
expect(renameKey({ allow: [] }, 'allow', 'permit')).toStrictEqual({ permit: [] });
});
});
describe('referrers cache', () => {
describe('filterOldReferrersCacheEntries', () => {
it('removes entries with old or no timestamp', () => {
const now = Date.now();
const cache = [{ timestamp: now }, { timestamp: now - REFERRER_TTL }, { referrer: '' }];
expect(filterOldReferrersCacheEntries(cache)).toStrictEqual([{ timestamp: now }]);
});
});
describe('getReferrersCache', () => {
beforeEach(() => {
localStorage.removeItem(URLS_CACHE_STORAGE_KEY);
});
it('returns an empty array if cache is not found', () => {
expect(getReferrersCache()).toHaveLength(0);
});
it('returns an empty array if cache is invalid', () => {
localStorage.setItem(URLS_CACHE_STORAGE_KEY, 'Invalid JSON');
expect(getReferrersCache()).toHaveLength(0);
});
it('returns parsed entries if valid', () => {
localStorage.setItem(
URLS_CACHE_STORAGE_KEY,
JSON.stringify([{ referrer: '', timestamp: Date.now() }]),
);
expect(getReferrersCache()).toHaveLength(1);
});
});
describe('addReferrersCacheEntry', () => {
it('unshifts entry and adds timestamp', () => {
const now = Date.now();
addReferrersCacheEntry([{ referrer: '', originalUrl: TEST_HOST, timestamp: now }], {
referrer: TEST_HOST,
});
const cache = getReferrersCache();
expect(cache).toHaveLength(2);
expect(cache[0].referrer).toBe(TEST_HOST);
expect(cache[0].timestamp).toBeDefined();
});
});
});
});
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