optimizely-oui/src/utils/localstorage-mock.js

Optimizely's Component Library.

// setup file
import { configure } from "enzyme";
import Adapter from "enzyme-adapter-react-16";

configure({ adapter: new Adapter() });

var localStorageMock = (function () {
    var store = {};
    return {
        getItem: function (key) {
            return store[key];
        },
        setItem: function (key, value) {
            store[key] = value.toString();
        },
        clear: function () {
            store = {};
        },
        removeItem: function (key) {
            delete store[key];
        },
    };
})();
Object.defineProperty(window, "localStorage", { value: localStorageMock });