gitlab-org--gitlab-foss/spec/javascripts/pager_spec.js

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