import DropDown from '~/droplab/drop_down'; import utils from '~/droplab/utils'; import { SELECTED_CLASS } from '~/droplab/constants'; describe('DropLab DropDown', () => { let testContext; beforeEach(() => { testContext = {}; }); describe('class constructor', () => { beforeEach(() => { jest.spyOn(DropDown.prototype, 'getItems').mockImplementation(() => {}); jest.spyOn(DropDown.prototype, 'initTemplateString').mockImplementation(() => {}); jest.spyOn(DropDown.prototype, 'addEvents').mockImplementation(() => {}); testContext.list = { innerHTML: 'innerHTML' }; testContext.dropdown = new DropDown(testContext.list); }); it('sets the .hidden property to true', () => { expect(testContext.dropdown.hidden).toBe(true); }); it('sets the .list property', () => { expect(testContext.dropdown.list).toBe(testContext.list); }); it('calls .getItems', () => { expect(DropDown.prototype.getItems).toHaveBeenCalled(); }); it('calls .initTemplateString', () => { expect(DropDown.prototype.initTemplateString).toHaveBeenCalled(); }); it('calls .addEvents', () => { expect(DropDown.prototype.addEvents).toHaveBeenCalled(); }); it('sets the .initialState property to the .list.innerHTML', () => { expect(testContext.dropdown.initialState).toBe(testContext.list.innerHTML); }); describe('if the list argument is a string', () => { beforeEach(() => { testContext.element = {}; testContext.selector = '.selector'; jest.spyOn(Document.prototype, 'querySelector').mockReturnValue(testContext.element); testContext.dropdown = new DropDown(testContext.selector); }); it('calls .querySelector with the selector string', () => { expect(Document.prototype.querySelector).toHaveBeenCalledWith(testContext.selector); }); it('sets the .list property element', () => { expect(testContext.dropdown.list).toBe(testContext.element); }); }); }); describe('getItems', () => { beforeEach(() => { testContext.list = { querySelectorAll: () => {} }; testContext.dropdown = { list: testContext.list }; testContext.nodeList = []; jest.spyOn(testContext.list, 'querySelectorAll').mockReturnValue(testContext.nodeList); testContext.getItems = DropDown.prototype.getItems.call(testContext.dropdown); }); it('calls .querySelectorAll with a list item query', () => { expect(testContext.list.querySelectorAll).toHaveBeenCalledWith('li'); }); it('sets the .items property to the returned list items', () => { expect(testContext.dropdown.items).toEqual(expect.any(Array)); }); it('returns the .items', () => { expect(testContext.getItems).toEqual(expect.any(Array)); }); }); describe('initTemplateString', () => { beforeEach(() => { testContext.items = [{ outerHTML: '' }, { outerHTML: '' }]; testContext.dropdown = { items: testContext.items }; DropDown.prototype.initTemplateString.call(testContext.dropdown); }); it('should set .templateString to the last items .outerHTML', () => { expect(testContext.dropdown.templateString).toBe(testContext.items[1].outerHTML); }); it('should not set .templateString to a non-last items .outerHTML', () => { expect(testContext.dropdown.templateString).not.toBe(testContext.items[0].outerHTML); }); describe('if .items is not set', () => { beforeEach(() => { testContext.dropdown = { getItems: () => {} }; jest.spyOn(testContext.dropdown, 'getItems').mockReturnValue([]); DropDown.prototype.initTemplateString.call(testContext.dropdown); }); it('should call .getItems', () => { expect(testContext.dropdown.getItems).toHaveBeenCalled(); }); }); describe('if items array is empty', () => { beforeEach(() => { testContext.dropdown = { items: [] }; DropDown.prototype.initTemplateString.call(testContext.dropdown); }); it('should set .templateString to an empty string', () => { expect(testContext.dropdown.templateString).toBe(''); }); }); }); describe('clickEvent', () => { beforeEach(() => { testContext.classList = { contains: jest.fn(), }; testContext.list = { dispatchEvent: () => {} }; testContext.dropdown = { hideOnClick: true, hide: () => {}, list: testContext.list, addSelectedClass: () => {}, }; testContext.event = { preventDefault: () => {}, target: { classList: testContext.classList, closest: () => null, }, }; testContext.dummyListItem = document.createElement('li'); jest.spyOn(testContext.event.target, 'closest').mockImplementation(selector => { if (selector === 'li') { return testContext.dummyListItem; } return null; }); jest.spyOn(testContext.dropdown, 'hide').mockImplementation(() => {}); jest.spyOn(testContext.dropdown, 'addSelectedClass').mockImplementation(() => {}); jest.spyOn(testContext.list, 'dispatchEvent').mockImplementation(() => {}); jest.spyOn(testContext.event, 'preventDefault').mockImplementation(() => {}); window.CustomEvent = jest.fn(); testContext.classList.contains.mockReturnValue(false); }); describe('normal click event', () => { beforeEach(() => { DropDown.prototype.clickEvent.call(testContext.dropdown, testContext.event); }); it('should call event.target.closest', () => { expect(testContext.event.target.closest).toHaveBeenCalledWith('.droplab-item-ignore'); expect(testContext.event.target.closest).toHaveBeenCalledWith('li'); }); it('should call addSelectedClass', () => { expect(testContext.dropdown.addSelectedClass).toHaveBeenCalledWith( testContext.dummyListItem, ); }); it('should call .preventDefault', () => { expect(testContext.event.preventDefault).toHaveBeenCalled(); }); it('should call .hide', () => { expect(testContext.dropdown.hide).toHaveBeenCalled(); }); it('should construct CustomEvent', () => { expect(window.CustomEvent).toHaveBeenCalledWith('click.dl', expect.any(Object)); }); it('should call .dispatchEvent with the customEvent', () => { expect(testContext.list.dispatchEvent).toHaveBeenCalledWith({}); }); }); describe('if the target is a UL element', () => { beforeEach(() => { testContext.event.target = document.createElement('ul'); jest.spyOn(testContext.event.target, 'closest').mockImplementation(() => {}); }); it('should return immediately', () => { DropDown.prototype.clickEvent.call(testContext.dropdown, testContext.event); expect(testContext.event.target.closest).not.toHaveBeenCalled(); expect(testContext.dropdown.addSelectedClass).not.toHaveBeenCalled(); }); }); describe('if the target has the droplab-item-ignore class', () => { beforeEach(() => { testContext.ignoredButton = document.createElement('button'); testContext.ignoredButton.classList.add('droplab-item-ignore'); testContext.event.target = testContext.ignoredButton; jest.spyOn(testContext.ignoredButton, 'closest'); }); it('does not select element', () => { DropDown.prototype.clickEvent.call(testContext.dropdown, testContext.event); expect(testContext.ignoredButton.closest.mock.calls.length).toBe(1); expect(testContext.ignoredButton.closest).toHaveBeenCalledWith('.droplab-item-ignore'); expect(testContext.dropdown.addSelectedClass).not.toHaveBeenCalled(); }); }); describe('if no selected element exists', () => { beforeEach(() => { testContext.event.preventDefault.mockReset(); testContext.dummyListItem = null; }); it('should return before .preventDefault is called', () => { DropDown.prototype.clickEvent.call(testContext.dropdown, testContext.event); expect(testContext.event.preventDefault).not.toHaveBeenCalled(); expect(testContext.dropdown.addSelectedClass).not.toHaveBeenCalled(); }); }); describe('if hideOnClick is false', () => { beforeEach(() => { testContext.dropdown.hideOnClick = false; testContext.dropdown.hide.mockReset(); }); it('should not call .hide', () => { DropDown.prototype.clickEvent.call(testContext.dropdown, testContext.event); expect(testContext.dropdown.hide).not.toHaveBeenCalled(); }); }); }); describe('addSelectedClass', () => { beforeEach(() => { testContext.items = Array(4).forEach((item, i) => { testContext.items[i] = { classList: { add: () => {} } }; jest.spyOn(testContext.items[i].classList, 'add').mockImplementation(() => {}); }); testContext.selected = { classList: { add: () => {} } }; testContext.dropdown = { removeSelectedClasses: () => {} }; jest.spyOn(testContext.dropdown, 'removeSelectedClasses').mockImplementation(() => {}); jest.spyOn(testContext.selected.classList, 'add').mockImplementation(() => {}); DropDown.prototype.addSelectedClass.call(testContext.dropdown, testContext.selected); }); it('should call .removeSelectedClasses', () => { expect(testContext.dropdown.removeSelectedClasses).toHaveBeenCalled(); }); it('should call .classList.add', () => { expect(testContext.selected.classList.add).toHaveBeenCalledWith(SELECTED_CLASS); }); }); describe('removeSelectedClasses', () => { beforeEach(() => { testContext.items = [...Array(4)]; testContext.items.forEach((item, i) => { testContext.items[i] = { classList: { add: jest.fn(), remove: jest.fn() } }; }); testContext.dropdown = { items: testContext.items }; DropDown.prototype.removeSelectedClasses.call(testContext.dropdown); }); it('should call .classList.remove for all items', () => { testContext.items.forEach((_, i) => { expect(testContext.items[i].classList.remove).toHaveBeenCalledWith(SELECTED_CLASS); }); }); describe('if .items is not set', () => { beforeEach(() => { testContext.dropdown = { getItems: () => {} }; jest.spyOn(testContext.dropdown, 'getItems').mockReturnValue([]); DropDown.prototype.removeSelectedClasses.call(testContext.dropdown); }); it('should call .getItems', () => { expect(testContext.dropdown.getItems).toHaveBeenCalled(); }); }); }); describe('addEvents', () => { beforeEach(() => { testContext.list = { addEventListener: () => {}, querySelectorAll: () => [], }; testContext.dropdown = { list: testContext.list, clickEvent: () => {}, closeDropdown: () => {}, eventWrapper: {}, }; }); it('should call .addEventListener', () => { jest.spyOn(testContext.list, 'addEventListener').mockImplementation(() => {}); DropDown.prototype.addEvents.call(testContext.dropdown); expect(testContext.list.addEventListener).toHaveBeenCalledWith('click', expect.any(Function)); expect(testContext.list.addEventListener).toHaveBeenCalledWith('keyup', expect.any(Function)); }); }); describe('setData', () => { beforeEach(() => { testContext.dropdown = { render: () => {} }; testContext.data = ['data']; jest.spyOn(testContext.dropdown, 'render').mockImplementation(() => {}); DropDown.prototype.setData.call(testContext.dropdown, testContext.data); }); it('should set .data', () => { expect(testContext.dropdown.data).toBe(testContext.data); }); it('should call .render with the .data', () => { expect(testContext.dropdown.render).toHaveBeenCalledWith(testContext.data); }); }); describe('addData', () => { beforeEach(() => { testContext.dropdown = { render: () => {}, data: ['data1'] }; testContext.data = ['data2']; jest.spyOn(testContext.dropdown, 'render').mockImplementation(() => {}); jest.spyOn(Array.prototype, 'concat'); DropDown.prototype.addData.call(testContext.dropdown, testContext.data); }); it('should call .concat with data', () => { expect(Array.prototype.concat).toHaveBeenCalledWith(testContext.data); }); it('should set .data with concatination', () => { expect(testContext.dropdown.data).toStrictEqual(['data1', 'data2']); }); it('should call .render with the .data', () => { expect(testContext.dropdown.render).toHaveBeenCalledWith(['data1', 'data2']); }); describe('if .data is undefined', () => { beforeEach(() => { testContext.dropdown = { render: () => {}, data: undefined }; testContext.data = ['data2']; jest.spyOn(testContext.dropdown, 'render').mockImplementation(() => {}); DropDown.prototype.addData.call(testContext.dropdown, testContext.data); }); it('should set .data with concatination', () => { expect(testContext.dropdown.data).toStrictEqual(['data2']); }); }); }); describe('render', () => { beforeEach(() => { testContext.renderableList = {}; testContext.list = { querySelector: q => { if (q === '.filter-dropdown-loading') { return false; } return testContext.renderableList; }, dispatchEvent: () => {}, }; testContext.dropdown = { renderChildren: () => {}, list: testContext.list }; testContext.data = [0, 1]; testContext.customEvent = {}; jest.spyOn(testContext.dropdown, 'renderChildren').mockImplementation(data => data); jest.spyOn(testContext.list, 'dispatchEvent').mockImplementation(() => {}); jest.spyOn(testContext.data, 'map'); jest.spyOn(window, 'CustomEvent').mockReturnValue(testContext.customEvent); DropDown.prototype.render.call(testContext.dropdown, testContext.data); }); it('should call .map', () => { expect(testContext.data.map).toHaveBeenCalledWith(expect.any(Function)); }); it('should call .renderChildren for each data item', () => { expect(testContext.dropdown.renderChildren.mock.calls.length).toBe(testContext.data.length); }); it('sets the renderableList .innerHTML', () => { expect(testContext.renderableList.innerHTML).toBe('01'); }); it('should call render.dl', () => { expect(window.CustomEvent).toHaveBeenCalledWith('render.dl', expect.any(Object)); }); it('should call dispatchEvent with the customEvent', () => { expect(testContext.list.dispatchEvent).toHaveBeenCalledWith(testContext.customEvent); }); describe('if no data argument is passed', () => { beforeEach(() => { testContext.data.map.mockReset(); testContext.dropdown.renderChildren.mockReset(); DropDown.prototype.render.call(testContext.dropdown, undefined); }); it('should not call .map', () => { expect(testContext.data.map).not.toHaveBeenCalled(); }); it('should not call .renderChildren', () => { expect(testContext.dropdown.renderChildren).not.toHaveBeenCalled(); }); }); describe('if no dynamic list is present', () => { beforeEach(() => { testContext.list = { querySelector: () => {}, dispatchEvent: () => {} }; testContext.dropdown = { renderChildren: () => {}, list: testContext.list }; testContext.data = [0, 1]; jest.spyOn(testContext.dropdown, 'renderChildren').mockImplementation(data => data); jest.spyOn(testContext.list, 'querySelector').mockImplementation(() => {}); jest.spyOn(testContext.data, 'map'); DropDown.prototype.render.call(testContext.dropdown, testContext.data); }); it('sets the .list .innerHTML', () => { expect(testContext.list.innerHTML).toBe('01'); }); }); }); describe('renderChildren', () => { beforeEach(() => { testContext.templateString = 'templateString'; testContext.dropdown = { templateString: testContext.templateString }; testContext.data = { droplab_hidden: true }; testContext.html = 'html'; testContext.template = { firstChild: { outerHTML: 'outerHTML', style: {} } }; jest.spyOn(utils, 'template').mockReturnValue(testContext.html); jest.spyOn(document, 'createElement').mockReturnValue(testContext.template); jest.spyOn(DropDown, 'setImagesSrc').mockImplementation(() => {}); testContext.renderChildren = DropDown.prototype.renderChildren.call( testContext.dropdown, testContext.data, ); }); it('should call utils.t with .templateString and data', () => { expect(utils.template).toHaveBeenCalledWith(testContext.templateString, testContext.data); }); it('should call document.createElement', () => { expect(document.createElement).toHaveBeenCalledWith('div'); }); it('should set the templates .innerHTML to the HTML', () => { expect(testContext.template.innerHTML).toBe(testContext.html); }); it('should call .setImagesSrc with the template', () => { expect(DropDown.setImagesSrc).toHaveBeenCalledWith(testContext.template); }); it('should set the template display to none', () => { expect(testContext.template.firstChild.style.display).toBe('none'); }); it('should return the templates .firstChild.outerHTML', () => { expect(testContext.renderChildren).toBe(testContext.template.firstChild.outerHTML); }); describe('if droplab_hidden is false', () => { beforeEach(() => { testContext.data = { droplab_hidden: false }; testContext.renderChildren = DropDown.prototype.renderChildren.call( testContext.dropdown, testContext.data, ); }); it('should set the template display to block', () => { expect(testContext.template.firstChild.style.display).toBe('block'); }); }); }); describe('setImagesSrc', () => { beforeEach(() => { testContext.template = { querySelectorAll: () => {} }; jest.spyOn(testContext.template, 'querySelectorAll').mockReturnValue([]); DropDown.setImagesSrc(testContext.template); }); it('should call .querySelectorAll', () => { expect(testContext.template.querySelectorAll).toHaveBeenCalledWith('img[data-src]'); }); }); describe('show', () => { beforeEach(() => { testContext.list = { style: {} }; testContext.dropdown = { list: testContext.list, hidden: true }; DropDown.prototype.show.call(testContext.dropdown); }); it('it should set .list display to block', () => { expect(testContext.list.style.display).toBe('block'); }); it('it should set .hidden to false', () => { expect(testContext.dropdown.hidden).toBe(false); }); describe('if .hidden is false', () => { beforeEach(() => { testContext.list = { style: {} }; testContext.dropdown = { list: testContext.list, hidden: false }; testContext.show = DropDown.prototype.show.call(testContext.dropdown); }); it('should return undefined', () => { expect(testContext.show).toBeUndefined(); }); it('should not set .list display to block', () => { expect(testContext.list.style.display).not.toBe('block'); }); }); }); describe('hide', () => { beforeEach(() => { testContext.list = { style: {} }; testContext.dropdown = { list: testContext.list }; DropDown.prototype.hide.call(testContext.dropdown); }); it('it should set .list display to none', () => { expect(testContext.list.style.display).toBe('none'); }); it('it should set .hidden to true', () => { expect(testContext.dropdown.hidden).toBe(true); }); }); describe('toggle', () => { beforeEach(() => { testContext.hidden = true; testContext.dropdown = { hidden: testContext.hidden, show: () => {}, hide: () => {} }; jest.spyOn(testContext.dropdown, 'show').mockImplementation(() => {}); jest.spyOn(testContext.dropdown, 'hide').mockImplementation(() => {}); DropDown.prototype.toggle.call(testContext.dropdown); }); it('should call .show', () => { expect(testContext.dropdown.show).toHaveBeenCalled(); }); describe('if .hidden is false', () => { beforeEach(() => { testContext.hidden = false; testContext.dropdown = { hidden: testContext.hidden, show: () => {}, hide: () => {} }; jest.spyOn(testContext.dropdown, 'show').mockImplementation(() => {}); jest.spyOn(testContext.dropdown, 'hide').mockImplementation(() => {}); DropDown.prototype.toggle.call(testContext.dropdown); }); it('should call .hide', () => { expect(testContext.dropdown.hide).toHaveBeenCalled(); }); }); }); describe('destroy', () => { beforeEach(() => { testContext.list = { removeEventListener: () => {} }; testContext.eventWrapper = { clickEvent: 'clickEvent' }; testContext.dropdown = { list: testContext.list, hide: () => {}, eventWrapper: testContext.eventWrapper, }; jest.spyOn(testContext.list, 'removeEventListener').mockImplementation(() => {}); jest.spyOn(testContext.dropdown, 'hide').mockImplementation(() => {}); DropDown.prototype.destroy.call(testContext.dropdown); }); it('it should call .hide', () => { expect(testContext.dropdown.hide).toHaveBeenCalled(); }); it('it should call .removeEventListener', () => { expect(testContext.list.removeEventListener).toHaveBeenCalledWith( 'click', testContext.eventWrapper.clickEvent, ); }); }); });