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