import $ from 'jquery'; import MockAdapter from 'axios-mock-adapter'; import axios from '~/lib/utils/axios_utils'; import Pager from '~/pager'; import { removeParams } from '~/lib/utils/url_utility'; jest.mock('~/lib/utils/url_utility', () => ({ removeParams: jest.fn().mockName('removeParams'), })); describe('pager', () => { let axiosMock; beforeEach(() => { axiosMock = new MockAdapter(axios); }); afterEach(() => { axiosMock.restore(); }); describe('init', () => { const originalHref = window.location.href; beforeEach(() => { setFixtures('
'); jest.spyOn($.fn, 'endlessScroll').mockImplementation(); }); afterEach(() => { window.history.replaceState({}, null, originalHref); }); it('should use data-href attribute from list element', () => { const href = `${gl.TEST_HOST}/some_list.json`; setFixtures(`
`); Pager.init(); expect(Pager.url).toBe(href); }); it('should use current url if data-href attribute not provided', () => { const href = `${gl.TEST_HOST}/some_list`; removeParams.mockReturnValue(href); Pager.init(); expect(Pager.url).toBe(href); }); it('should get initial offset from query parameter', () => { window.history.replaceState({}, null, '?offset=100'); Pager.init(); expect(Pager.offset).toBe(100); }); it('keeps extra query parameters from url', () => { window.history.replaceState({}, null, '?filter=test&offset=100'); const href = `${gl.TEST_HOST}/some_list?filter=test`; removeParams.mockReturnValue(href); Pager.init(); expect(removeParams).toHaveBeenCalledWith(['limit', 'offset']); expect(Pager.url).toEqual(href); }); }); describe('getOld', () => { const urlRegex = /(.*)some_list(.*)$/; function mockSuccess(count = 0) { axiosMock.onGet(urlRegex).reply(200, { count, html: '', }); } function mockError() { axiosMock.onGet(urlRegex).networkError(); } beforeEach(() => { setFixtures( '
', ); jest.spyOn(axios, 'get'); Pager.init(); }); it('shows loader while loading next page', done => { mockSuccess(); jest.spyOn(Pager.loading, 'show').mockImplementation(() => {}); Pager.getOld(); setImmediate(() => { expect(Pager.loading.show).toHaveBeenCalled(); done(); }); }); it('hides loader on success', done => { mockSuccess(); jest.spyOn(Pager.loading, 'hide').mockImplementation(() => {}); Pager.getOld(); setImmediate(() => { expect(Pager.loading.hide).toHaveBeenCalled(); done(); }); }); it('hides loader on error', done => { mockError(); jest.spyOn(Pager.loading, 'hide').mockImplementation(() => {}); Pager.getOld(); setImmediate(() => { expect(Pager.loading.hide).toHaveBeenCalled(); done(); }); }); it('sends request to url with offset and limit params', done => { Pager.offset = 100; Pager.limit = 20; Pager.getOld(); setImmediate(() => { const [url, params] = axios.get.mock.calls[0]; expect(params).toEqual({ params: { limit: 20, offset: 100, }, }); expect(url).toBe('/some_list'); done(); }); }); it('disables if return count is less than limit', done => { Pager.offset = 0; Pager.limit = 20; mockSuccess(1); jest.spyOn(Pager.loading, 'hide').mockImplementation(() => {}); Pager.getOld(); setImmediate(() => { expect(Pager.loading.hide).toHaveBeenCalled(); expect(Pager.disable).toBe(true); done(); }); }); }); });