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content-renderer.spec.js
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content-renderer.spec.js
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import Vue from 'vue';
import { mount } from '@vue/test-utils';
import store from 'kolibri.coreVue.vuex.store';
import ContentRenderer from '../src/views/ContentRenderer';
jest.mock('kolibri.lib.logging');
describe('ContentRenderer Component', () => {
beforeEach(() => {
Vue.prototype.Kolibri = {
canRenderContent: () => true,
};
});
afterEach(() => {
Vue.prototype.Kolibri = {};
});
const defaultFiles = [
{
available: true,
extension: 'tst',
},
];
function defaultPropsDataFromFiles(files = defaultFiles) {
return {
kind: 'test',
files,
};
}
describe('computed property', () => {
describe('availableFiles', () => {
function testAvailableFiles(files, expected) {
const wrapper = mount(ContentRenderer, {
propsData: defaultPropsDataFromFiles(files),
store,
});
expect(wrapper.vm.availableFiles.length).toEqual(expected);
}
it('should be 0 if the mediator concludes that there are no compatible renderers', () => {
Vue.prototype.Kolibri.canRenderContent = () => false;
testAvailableFiles(defaultFiles, 0);
Vue.prototype.Kolibri.canRenderContent = () => true;
});
it('should be 1 when there is one available file', () => {
testAvailableFiles(defaultFiles, 1);
});
it('should be 1 when there is one available file and a supplementary file', () => {
const newFiles = defaultFiles.concat({
available: true,
supplementary: true,
extension: 'vtt',
});
testAvailableFiles(newFiles, 1);
});
it('should be 1 when there is one available file and a thumbnail file', () => {
const newFiles = defaultFiles.concat({
available: true,
thumbnail: true,
extension: 'vtt',
});
testAvailableFiles(newFiles, 1);
});
it('should be 2 when there are two available files', () => {
const newFiles = defaultFiles.concat({
available: true,
extension: 'vtt',
});
testAvailableFiles(newFiles, 2);
});
});
describe('defaultFile', () => {
function testDefaultFile(files, expected) {
const wrapper = mount(ContentRenderer, {
propsData: defaultPropsDataFromFiles(files),
store,
});
expect(wrapper.vm.defaultFile).toEqual(expected);
}
it('should be the file when there is one available file', () => {
testDefaultFile(defaultFiles, defaultFiles[0]);
});
it('should be undefined when there are no available files', () => {
testDefaultFile([], undefined);
});
});
describe('extension', () => {
function testExtension(files, expected) {
const wrapper = mount(ContentRenderer, {
propsData: defaultPropsDataFromFiles(files),
store,
});
expect(wrapper.vm.extension).toEqual(expected);
}
it("should be the file's extension when there is one available file", () => {
testExtension(defaultFiles, defaultFiles[0].extension);
});
it('should be undefined when there are no available files', () => {
testExtension([], undefined);
});
});
});
describe('method', () => {
describe('updateRendererComponent', () => {
describe('when content is available', () => {
describe('when renderer is available', () => {
const dummyComponent = { test: 'testing' };
beforeEach(() => {
Vue.prototype.Kolibri.retrieveContentRenderer = () => Promise.resolve(dummyComponent);
});
afterEach(() => {
delete Vue.prototype.Kolibri.retrieveContentRenderer;
});
it('should set currentViewClass to returned component', () => {
const props = Object.assign(defaultPropsDataFromFiles(), {
available: true,
});
const wrapper = mount(ContentRenderer, {
propsData: props,
store,
});
return Vue.nextTick().then(() => {
expect(wrapper.vm.currentViewClass).toEqual(dummyComponent);
});
});
it('should call initSession', () => {
const props = Object.assign(defaultPropsDataFromFiles(), {
available: true,
initSession: jest.fn().mockResolvedValue(),
});
const wrapper = mount(ContentRenderer, {
propsData: props,
store,
});
return Vue.nextTick().then(() => {
expect(wrapper.vm.initSession).toHaveBeenCalledTimes(1);
});
});
});
describe('when no renderer is available', () => {
beforeEach(() => {
Vue.prototype.Kolibri.retrieveContentRenderer = () =>
Promise.reject({ message: 'oh no' });
});
afterEach(() => {
delete Vue.prototype.Kolibri.retrieveContentRenderer;
});
it('calling updateRendererComponent should set noRendererAvailable to true', () => {
const props = Object.assign(defaultPropsDataFromFiles(), {
available: true,
});
const wrapper = mount(ContentRenderer, {
propsData: props,
store,
});
// 'created' hook runs it once. Running it here again for testing.
// TODO Look into how to do this without calling the method directly
return wrapper.vm.updateRendererComponent().then(() => {
expect(wrapper.vm.noRendererAvailable).toEqual(true);
});
});
});
});
describe('when content is not available', () => {
it('should return null', () => {
const props = Object.assign(defaultPropsDataFromFiles(), {
available: false,
});
const wrapper = mount(ContentRenderer, {
propsData: props,
store,
});
// 'created' hook runs it once. Running it here again for testing.
return wrapper.vm.updateRendererComponent().then(component => {
expect(component).toEqual(null);
});
});
});
});
});
});