/
RendererService.test.ts
242 lines (208 loc) · 6.8 KB
/
RendererService.test.ts
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import { Component, ɵresetJitOptions } from '@angular/core';
import { platformBrowserDynamicTesting } from '@angular/platform-browser-dynamic/testing';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { Parameters } from '../types-6-0';
import { RendererService } from './RendererService';
jest.mock('@angular/platform-browser-dynamic');
declare const document: Document;
describe('RendererService', () => {
let rendererService: RendererService;
beforeEach(async () => {
document.body.innerHTML = '<div id="root"></div>';
(platformBrowserDynamic as any).mockImplementation(platformBrowserDynamicTesting);
rendererService = new RendererService();
});
afterEach(() => {
jest.clearAllMocks();
// Necessary to avoid this error "Provided value for `preserveWhitespaces` can not be changed once it has been set." :
// Source: https://github.com/angular/angular/commit/e342ffd855ffeb8af7067b42307ffa320d82177e#diff-92b125e532cc22977b46a91f068d6d7ea81fd61b772842a4a0212f1cfd875be6R28
ɵresetJitOptions();
});
it('should initialize', () => {
expect(rendererService).toBeDefined();
});
describe('render', () => {
it('should add storybook-wrapper for story template', async () => {
await rendererService.render({
storyFnAngular: {
template: '🦊',
props: {},
},
forced: false,
parameters: {} as any,
});
expect(document.body.getElementsByTagName('storybook-wrapper')[0].innerHTML).toBe('🦊');
});
it('should add storybook-wrapper for story component', async () => {
@Component({ selector: 'foo', template: '🦊' })
class FooComponent {}
await rendererService.render({
storyFnAngular: {
props: {},
},
forced: false,
parameters: {
component: FooComponent,
},
});
expect(document.body.getElementsByTagName('storybook-wrapper')[0].innerHTML).toBe(
'<foo>🦊</foo><!--container-->'
);
});
it('should handle circular reference in moduleMetadata', async () => {
class Thing {
token: Thing;
constructor() {
this.token = this;
}
}
const token = new Thing();
await rendererService.render({
storyFnAngular: {
template: '🦊',
props: {},
moduleMetadata: { providers: [{ provide: 'foo', useValue: token }] },
},
forced: false,
parameters: {} as any,
});
expect(document.body.getElementsByTagName('storybook-wrapper')[0].innerHTML).toBe('🦊');
});
describe('when forced=true', () => {
beforeEach(async () => {
// Init first render
await rendererService.render({
storyFnAngular: {
template: '{{ logo }}: {{ name }}',
props: {
logo: '🦊',
name: 'Fox',
},
},
forced: true,
parameters: {} as any,
});
});
it('should be rendered a first time', async () => {
expect(document.body.getElementsByTagName('storybook-wrapper')[0].innerHTML).toBe(
'🦊: Fox'
);
});
it('should not be re-rendered when only props change', async () => {
let countDestroy = 0;
rendererService.platform.onDestroy(() => {
countDestroy += 1;
});
// only props change
await rendererService.render({
storyFnAngular: {
props: {
logo: '👾',
},
},
forced: true,
parameters: {} as any,
});
expect(countDestroy).toEqual(0);
expect(document.body.getElementsByTagName('storybook-wrapper')[0].innerHTML).toBe(
'👾: Fox'
);
});
it('should be re-rendered when template change', async () => {
await rendererService.render({
storyFnAngular: {
template: '{{ beer }}',
props: {
beer: '🍺',
},
},
forced: true,
parameters: {} as any,
});
expect(document.body.getElementsByTagName('storybook-wrapper')[0].innerHTML).toBe('🍺');
});
it('should be re-rendered when moduleMetadata structure change', async () => {
let countDestroy = 0;
rendererService.platform.onDestroy(() => {
countDestroy += 1;
});
// Only props change -> no full rendering
await rendererService.render({
storyFnAngular: {
template: '{{ logo }}: {{ name }}',
props: {
logo: '🍺',
name: 'Beer',
},
},
forced: true,
parameters: {} as any,
});
expect(countDestroy).toEqual(0);
// Change in the module structure -> full rendering
await rendererService.render({
storyFnAngular: {
template: '{{ logo }}: {{ name }}',
props: {
logo: '🍺',
name: 'Beer',
},
moduleMetadata: { providers: [{ provide: 'foo', useValue: 42 }] },
},
forced: true,
parameters: {} as any,
});
expect(countDestroy).toEqual(1);
});
});
it('should properly destroy angular platform between each render', async () => {
let countDestroy = 0;
await rendererService.render({
storyFnAngular: {
template: '🦊',
props: {},
},
forced: false,
parameters: {} as any,
});
rendererService.platform.onDestroy(() => {
countDestroy += 1;
});
await rendererService.render({
storyFnAngular: {
template: '🐻',
props: {},
},
forced: false,
parameters: {} as any,
});
expect(countDestroy).toEqual(1);
});
describe('bootstrap module options', () => {
async function setupComponentWithWhitespace(bootstrapModuleOptions: unknown) {
await rendererService.render({
storyFnAngular: {
template: '<div> </div>',
props: {},
},
forced: false,
parameters: {
bootstrapModuleOptions,
} as Parameters,
});
}
it('should preserve whitespaces', async () => {
await setupComponentWithWhitespace({ preserveWhitespaces: true });
expect(document.body.getElementsByTagName('storybook-wrapper')[0].innerHTML).toBe(
'<div> </div>'
);
});
it('should remove whitespaces', async () => {
await setupComponentWithWhitespace({ preserveWhitespaces: false });
expect(document.body.getElementsByTagName('storybook-wrapper')[0].innerHTML).toBe(
'<div></div>'
);
});
});
});
});