| 1 | /** |
| 2 | * Copyright (c) Meta Platforms, Inc. and affiliates. |
| 3 | * |
| 4 | * This source code is licensed under the MIT license found in the |
| 5 | * LICENSE file in the root directory of this source tree. |
| 6 | * |
| 7 | * @emails react-core |
| 8 | */ |
| 9 | |
| 10 | 'use strict'; |
| 11 | |
| 12 | import {insertNodesAndExecuteScripts} from '../test-utils/FizzTestUtils'; |
| 13 | import {patchMessageChannel} from '../../../../scripts/jest/patchMessageChannel'; |
| 14 | |
| 15 | // Polyfills for test environment |
| 16 | global.ReadableStream = |
| 17 | require('web-streams-polyfill/ponyfill/es6').ReadableStream; |
| 18 | global.TextEncoder = require('util').TextEncoder; |
| 19 | |
| 20 | let React; |
| 21 | let ReactDOMServer; |
| 22 | let Scheduler; |
| 23 | let assertLog; |
| 24 | let container; |
| 25 | let serverAct; |
| 26 | |
| 27 | describe('ReactClassComponentPropResolutionFizz', () => { |
| 28 | beforeEach(() => { |
| 29 | jest.resetModules(); |
| 30 | Scheduler = require('scheduler'); |
| 31 | patchMessageChannel(); |
| 32 | |
| 33 | React = require('react'); |
| 34 | ReactDOMServer = require('react-dom/server.browser'); |
| 35 | assertLog = require('internal-test-utils').assertLog; |
| 36 | serverAct = require('internal-test-utils').serverAct; |
| 37 | container = document.createElement('div'); |
| 38 | document.body.appendChild(container); |
| 39 | }); |
| 40 | |
| 41 | afterEach(() => { |
| 42 | document.body.removeChild(container); |
| 43 | }); |
| 44 | |
| 45 | async function readIntoContainer(stream) { |
| 46 | const reader = stream.getReader(); |
| 47 | let result = ''; |
| 48 | while (true) { |
| 49 | const {done, value} = await reader.read(); |
| 50 | if (done) { |
| 51 | break; |
| 52 | } |
| 53 | result += Buffer.from(value).toString('utf8'); |
| 54 | } |
| 55 | const temp = document.createElement('div'); |
| 56 | temp.innerHTML = result; |
| 57 | insertNodesAndExecuteScripts(temp, container, null); |
| 58 | } |
| 59 | |
| 60 | function Text({text}) { |
| 61 | Scheduler.log(text); |
| 62 | return text; |
| 63 | } |
| 64 | |
| 65 | it('resolves ref and default props before calling lifecycle methods', async () => { |
| 66 | function getPropKeys(props) { |
| 67 | return Object.keys(props).join(', '); |
| 68 | } |
| 69 | |
| 70 | class Component extends React.Component { |
| 71 | constructor(props) { |
| 72 | super(props); |
| 73 | Scheduler.log('constructor: ' + getPropKeys(props)); |
| 74 | } |
| 75 | UNSAFE_componentWillMount() { |
| 76 | Scheduler.log('componentWillMount: ' + getPropKeys(this.props)); |
| 77 | } |
| 78 | render() { |
| 79 | return <Text text={'render: ' + getPropKeys(this.props)} />; |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | Component.defaultProps = { |
| 84 | default: 'yo', |
| 85 | }; |
| 86 | |
| 87 | // `ref` should never appear as a prop. `default` always should. |
| 88 | |
| 89 | const ref = React.createRef(); |
| 90 | const stream = await serverAct(() => |
| 91 | ReactDOMServer.renderToReadableStream(<Component text="Yay" ref={ref} />), |
| 92 | ); |
| 93 | await readIntoContainer(stream); |
| 94 | |
| 95 | assertLog([ |
| 96 | 'constructor: text, default', |
| 97 | 'componentWillMount: text, default', |
| 98 | 'render: text, default', |
| 99 | ]); |
| 100 | }); |
| 101 | }); |