gitlab-org--gitlab-foss/spec/frontend/droplab/drop_down_spec.js

663 lines
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JavaScript
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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: '<a></a>' }, { outerHTML: '<img>' }];
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,
);
});
});
});