@empathyco/x-storage-service/dist/cjs/__tests__/browser-storage-service.spec.js

Storage service with TTL

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var browser_storage_service_1 = require("../browser-storage-service");
var storage;
var prefix = 'custom';
var key = 'key';
var anotherKey = 'another-key';
var item = { a: 'item', b: true, c: 288 };
var startingTimestamp = 1563868724320;
describe('testing BrowserStorageService', function () {
    beforeEach(function () {
        localStorage.clear();
        storage = new browser_storage_service_1.BrowserStorageService(localStorage);
        Date.now = jest.fn(function () { return startingTimestamp; });
    });
    it('saves an item in local storage', function () {
        storage.setItem(key, item);
        expect(localStorage).toHaveLength(1);
    });
    it('gets an item from local storage', function () {
        storage.setItem(key, item);
        expect(storage.getItem(key)).toEqual(item);
    });
    it('removes an item from local storage and returns it', function () {
        storage.setItem(key, item);
        expect(storage.removeItem(key)).toEqual(item);
        expect(localStorage).toHaveLength(0);
    });
    it('supports custom prefixes', function () {
        storage = new browser_storage_service_1.BrowserStorageService(localStorage, prefix);
        storage.setItem(key, item);
        expect(localStorage).toHaveLength(1);
        expect(localStorage.getItem(key)).toBeNull();
        expect(Object.keys(localStorage).filter(function (key) { return key.indexOf(prefix) === 0; })).toHaveLength(1);
        expect(storage.getItem(key)).toEqual(item);
        expect(storage.removeItem(key)).toEqual(item);
        expect(localStorage).toHaveLength(0);
    });
    it('supports ttl', function () {
        storage.setItem(key, item, 50);
        expect(storage.getItem(key)).toEqual(item);
        Date.now = jest.fn(function () { return startingTimestamp + 100; });
        expect(storage.getItem(key)).toBeNull();
    });
    it('removes expired items without explicitly getting them', function () {
        storage.setItem(key, item, 50);
        storage.setItem(anotherKey, item);
        expect(storage.getItem(key)).toEqual(item);
        expect(storage.getItem(anotherKey)).toEqual(item);
        Date.now = jest.fn(function () { return startingTimestamp + 100; });
        // Unexpired item still exists
        expect(storage.getItem(anotherKey)).toEqual(item);
        // Expired item is removed from storage without actively getting it
        expect(localStorage).toHaveLength(1);
    });
    it('clears all the items', function () {
        storage.setItem(key, item);
        storage.setItem(anotherKey, item);
        expect(storage.clear()).toEqual(2);
        expect(localStorage).toHaveLength(0);
    });
    it('does not allow you to save undefined values', function () {
        storage.setItem(key, undefined);
        expect(localStorage).toHaveLength(0);
    });
    it('allows you to save null values', function () {
        storage.setItem(key, null);
        expect(storage.getItem(key)).toBeNull();
    });
    it('returns null if you try to retrieve a non valid JSON item', function () {
        localStorage.setItem("empathy-".concat(key), '{a: 1}');
        expect(localStorage).toHaveLength(1);
        expect(storage.getItem(key)).toBeNull();
    });
});
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