154 lines
4 KiB
JavaScript
154 lines
4 KiB
JavaScript
import $ from 'jquery';
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import Autosave from '~/autosave';
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import AccessorUtilities from '~/lib/utils/accessor';
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import { useLocalStorageSpy } from 'helpers/local_storage_helper';
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describe('Autosave', () => {
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useLocalStorageSpy();
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let autosave;
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const field = $('<textarea></textarea>');
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const key = 'key';
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describe('class constructor', () => {
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beforeEach(() => {
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jest.spyOn(AccessorUtilities, 'isLocalStorageAccessSafe').mockReturnValue(true);
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jest.spyOn(Autosave.prototype, 'restore').mockImplementation(() => {});
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});
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it('should set .isLocalStorageAvailable', () => {
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autosave = new Autosave(field, key);
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expect(AccessorUtilities.isLocalStorageAccessSafe).toHaveBeenCalled();
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expect(autosave.isLocalStorageAvailable).toBe(true);
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});
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});
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describe('restore', () => {
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beforeEach(() => {
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autosave = {
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field,
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key,
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};
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});
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describe('if .isLocalStorageAvailable is `false`', () => {
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beforeEach(() => {
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autosave.isLocalStorageAvailable = false;
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Autosave.prototype.restore.call(autosave);
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});
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it('should not call .getItem', () => {
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expect(window.localStorage.getItem).not.toHaveBeenCalled();
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});
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});
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describe('if .isLocalStorageAvailable is `true`', () => {
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beforeEach(() => {
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autosave.isLocalStorageAvailable = true;
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});
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it('should call .getItem', () => {
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Autosave.prototype.restore.call(autosave);
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expect(window.localStorage.getItem).toHaveBeenCalledWith(key);
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});
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it('triggers jquery event', () => {
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jest.spyOn(autosave.field, 'trigger').mockImplementation(() => {});
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Autosave.prototype.restore.call(autosave);
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expect(field.trigger).toHaveBeenCalled();
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});
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it('triggers native event', () => {
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const fieldElement = autosave.field.get(0);
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const eventHandler = jest.fn();
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fieldElement.addEventListener('change', eventHandler);
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Autosave.prototype.restore.call(autosave);
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expect(eventHandler).toHaveBeenCalledTimes(1);
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fieldElement.removeEventListener('change', eventHandler);
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});
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});
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describe('if field gets deleted from DOM', () => {
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beforeEach(() => {
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autosave.field = $('.not-a-real-element');
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});
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it('does not trigger event', () => {
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jest.spyOn(field, 'trigger');
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expect(field.trigger).not.toHaveBeenCalled();
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});
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});
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});
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describe('save', () => {
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beforeEach(() => {
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autosave = { reset: jest.fn() };
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autosave.field = field;
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field.val('value');
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});
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describe('if .isLocalStorageAvailable is `false`', () => {
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beforeEach(() => {
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autosave.isLocalStorageAvailable = false;
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Autosave.prototype.save.call(autosave);
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});
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it('should not call .setItem', () => {
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expect(window.localStorage.setItem).not.toHaveBeenCalled();
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});
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});
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describe('if .isLocalStorageAvailable is `true`', () => {
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beforeEach(() => {
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autosave.isLocalStorageAvailable = true;
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Autosave.prototype.save.call(autosave);
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});
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it('should call .setItem', () => {
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expect(window.localStorage.setItem).toHaveBeenCalled();
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});
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});
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});
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describe('reset', () => {
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beforeEach(() => {
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autosave = {
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key,
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};
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});
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describe('if .isLocalStorageAvailable is `false`', () => {
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beforeEach(() => {
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autosave.isLocalStorageAvailable = false;
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Autosave.prototype.reset.call(autosave);
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});
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it('should not call .removeItem', () => {
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expect(window.localStorage.removeItem).not.toHaveBeenCalled();
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});
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});
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describe('if .isLocalStorageAvailable is `true`', () => {
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beforeEach(() => {
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autosave.isLocalStorageAvailable = true;
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Autosave.prototype.reset.call(autosave);
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});
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it('should call .removeItem', () => {
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expect(window.localStorage.removeItem).toHaveBeenCalledWith(key);
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});
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});
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});
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});
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