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ReactDOMFizzServer-test.js
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8575 lines (7626 loc) · 229 KB
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/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @emails react-core
* @jest-environment ./scripts/jest/ReactDOMServerIntegrationEnvironment
*/
'use strict';
import {
insertNodesAndExecuteScripts,
mergeOptions,
stripExternalRuntimeInNodes,
withLoadingReadyState,
getVisibleChildren,
} from '../test-utils/FizzTestUtils';
let JSDOM;
let Stream;
let Scheduler;
let React;
let ReactDOM;
let ReactDOMClient;
let ReactDOMFizzServer;
let ReactDOMFizzStatic;
let Suspense;
let SuspenseList;
let assertConsoleErrorDev;
let useSyncExternalStore;
let useSyncExternalStoreWithSelector;
let use;
let useActionState;
let PropTypes;
let textCache;
let writable;
let CSPnonce = null;
let container;
let buffer = '';
let hasErrored = false;
let fatalError = undefined;
let renderOptions;
let waitFor;
let waitForAll;
let assertLog;
let waitForPaint;
let clientAct;
let streamingContainer;
function normalizeError(msg) {
// Take the first sentence to make it easier to assert on.
const idx = msg.indexOf('.');
if (idx > -1) {
return msg.slice(0, idx + 1);
}
return msg;
}
describe('ReactDOMFizzServer', () => {
beforeEach(() => {
jest.resetModules();
JSDOM = require('jsdom').JSDOM;
const jsdom = new JSDOM(
'<!DOCTYPE html><html><head></head><body><div id="container">',
{
runScripts: 'dangerously',
},
);
// We mock matchMedia. for simplicity it only matches 'all' or '' and misses everything else
Object.defineProperty(jsdom.window, 'matchMedia', {
writable: true,
value: jest.fn().mockImplementation(query => ({
matches: query === 'all' || query === '',
media: query,
})),
});
streamingContainer = null;
global.window = jsdom.window;
global.document = global.window.document;
global.navigator = global.window.navigator;
global.Node = global.window.Node;
global.addEventListener = global.window.addEventListener;
global.MutationObserver = global.window.MutationObserver;
container = document.getElementById('container');
Scheduler = require('scheduler');
React = require('react');
ReactDOM = require('react-dom');
ReactDOMClient = require('react-dom/client');
ReactDOMFizzServer = require('react-dom/server');
if (__EXPERIMENTAL__) {
ReactDOMFizzStatic = require('react-dom/static');
}
Stream = require('stream');
Suspense = React.Suspense;
use = React.use;
if (gate(flags => flags.enableSuspenseList)) {
SuspenseList = React.unstable_SuspenseList;
}
PropTypes = require('prop-types');
if (__VARIANT__) {
const originalConsoleError = console.error;
console.error = (error, ...args) => {
if (
typeof error !== 'string' ||
error.indexOf('ReactDOM.useFormState has been renamed') === -1
) {
originalConsoleError(error, ...args);
}
};
// Remove after API is deleted.
useActionState = ReactDOM.useFormState;
} else {
useActionState = React.useActionState;
}
({
assertConsoleErrorDev,
assertLog,
act: clientAct,
waitFor,
waitForAll,
waitForPaint,
} = require('internal-test-utils'));
if (gate(flags => flags.source)) {
// The `with-selector` module composes the main `use-sync-external-store`
// entrypoint. In the compiled artifacts, this is resolved to the `shim`
// implementation by our build config, but when running the tests against
// the source files, we need to tell Jest how to resolve it. Because this
// is a source module, this mock has no affect on the build tests.
jest.mock('use-sync-external-store/src/useSyncExternalStore', () =>
jest.requireActual('react'),
);
}
useSyncExternalStore = React.useSyncExternalStore;
useSyncExternalStoreWithSelector =
require('use-sync-external-store/with-selector').useSyncExternalStoreWithSelector;
textCache = new Map();
buffer = '';
hasErrored = false;
writable = new Stream.PassThrough();
writable.setEncoding('utf8');
writable.on('data', chunk => {
buffer += chunk;
});
writable.on('error', error => {
hasErrored = true;
fatalError = error;
});
renderOptions = {};
if (gate(flags => flags.shouldUseFizzExternalRuntime)) {
renderOptions.unstable_externalRuntimeSrc =
'react-dom-bindings/src/server/ReactDOMServerExternalRuntime.js';
}
});
function expectErrors(errorsArr, toBeDevArr, toBeProdArr) {
const mappedErrows = errorsArr.map(({error, errorInfo}) => {
const stack = errorInfo && errorInfo.componentStack;
const digest = error.digest;
if (stack) {
return [error.message, digest, normalizeCodeLocInfo(stack)];
} else if (digest) {
return [error.message, digest];
}
return error.message;
});
if (__DEV__) {
expect(mappedErrows).toEqual(toBeDevArr);
} else {
expect(mappedErrows).toEqual(toBeProdArr);
}
}
function componentStack(components) {
return components
.map(component => `\n in ${component} (at **)`)
.join('');
}
const bodyStartMatch = /<body(?:>| .*?>)/;
const headStartMatch = /<head(?:>| .*?>)/;
async function act(callback) {
await callback();
// Await one turn around the event loop.
// This assumes that we'll flush everything we have so far.
await new Promise(resolve => {
setImmediate(resolve);
});
if (hasErrored) {
throw fatalError;
}
// JSDOM doesn't support stream HTML parser so we need to give it a proper fragment.
// We also want to execute any scripts that are embedded.
// We assume that we have now received a proper fragment of HTML.
let bufferedContent = buffer;
buffer = '';
if (!bufferedContent) {
return;
}
await withLoadingReadyState(async () => {
const bodyMatch = bufferedContent.match(bodyStartMatch);
const headMatch = bufferedContent.match(headStartMatch);
if (streamingContainer === null) {
// This is the first streamed content. We decide here where to insert it. If we get <html>, <head>, or <body>
// we abandon the pre-built document and start from scratch. If we get anything else we assume it goes into the
// container. This is not really production behavior because you can't correctly stream into a deep div effectively
// but it's pragmatic for tests.
if (
bufferedContent.startsWith('<head>') ||
bufferedContent.startsWith('<head ') ||
bufferedContent.startsWith('<body>') ||
bufferedContent.startsWith('<body ')
) {
// wrap in doctype to normalize the parsing process
bufferedContent = '<!DOCTYPE html><html>' + bufferedContent;
} else if (
bufferedContent.startsWith('<html>') ||
bufferedContent.startsWith('<html ')
) {
throw new Error(
'Recieved <html> without a <!DOCTYPE html> which is almost certainly a bug in React',
);
}
if (bufferedContent.startsWith('<!DOCTYPE html>')) {
// we can just use the whole document
const tempDom = new JSDOM(bufferedContent);
// Wipe existing head and body content
document.head.innerHTML = '';
document.body.innerHTML = '';
// Copy the <html> attributes over
const tempHtmlNode = tempDom.window.document.documentElement;
for (let i = 0; i < tempHtmlNode.attributes.length; i++) {
const attr = tempHtmlNode.attributes[i];
document.documentElement.setAttribute(attr.name, attr.value);
}
if (headMatch) {
// We parsed a head open tag. we need to copy head attributes and insert future
// content into <head>
streamingContainer = document.head;
const tempHeadNode = tempDom.window.document.head;
for (let i = 0; i < tempHeadNode.attributes.length; i++) {
const attr = tempHeadNode.attributes[i];
document.head.setAttribute(attr.name, attr.value);
}
const source = document.createElement('head');
source.innerHTML = tempHeadNode.innerHTML;
await insertNodesAndExecuteScripts(source, document.head, CSPnonce);
}
if (bodyMatch) {
// We parsed a body open tag. we need to copy head attributes and insert future
// content into <body>
streamingContainer = document.body;
const tempBodyNode = tempDom.window.document.body;
for (let i = 0; i < tempBodyNode.attributes.length; i++) {
const attr = tempBodyNode.attributes[i];
document.body.setAttribute(attr.name, attr.value);
}
const source = document.createElement('body');
source.innerHTML = tempBodyNode.innerHTML;
await insertNodesAndExecuteScripts(source, document.body, CSPnonce);
}
if (!headMatch && !bodyMatch) {
throw new Error('expected <head> or <body> after <html>');
}
} else {
// we assume we are streaming into the default container'
streamingContainer = container;
const div = document.createElement('div');
div.innerHTML = bufferedContent;
await insertNodesAndExecuteScripts(div, container, CSPnonce);
}
} else if (streamingContainer === document.head) {
bufferedContent = '<!DOCTYPE html><html><head>' + bufferedContent;
const tempDom = new JSDOM(bufferedContent);
const tempHeadNode = tempDom.window.document.head;
const source = document.createElement('head');
source.innerHTML = tempHeadNode.innerHTML;
await insertNodesAndExecuteScripts(source, document.head, CSPnonce);
if (bodyMatch) {
streamingContainer = document.body;
const tempBodyNode = tempDom.window.document.body;
for (let i = 0; i < tempBodyNode.attributes.length; i++) {
const attr = tempBodyNode.attributes[i];
document.body.setAttribute(attr.name, attr.value);
}
const bodySource = document.createElement('body');
bodySource.innerHTML = tempBodyNode.innerHTML;
await insertNodesAndExecuteScripts(
bodySource,
document.body,
CSPnonce,
);
}
} else {
const div = document.createElement('div');
div.innerHTML = bufferedContent;
await insertNodesAndExecuteScripts(div, streamingContainer, CSPnonce);
}
}, document);
}
function resolveText(text) {
const record = textCache.get(text);
if (record === undefined) {
const newRecord = {
status: 'resolved',
value: text,
};
textCache.set(text, newRecord);
} else if (record.status === 'pending') {
const thenable = record.value;
record.status = 'resolved';
record.value = text;
thenable.pings.forEach(t => t());
}
}
function rejectText(text, error) {
const record = textCache.get(text);
if (record === undefined) {
const newRecord = {
status: 'rejected',
value: error,
};
textCache.set(text, newRecord);
} else if (record.status === 'pending') {
const thenable = record.value;
record.status = 'rejected';
record.value = error;
thenable.pings.forEach(t => t());
}
}
function readText(text) {
const record = textCache.get(text);
if (record !== undefined) {
switch (record.status) {
case 'pending':
throw record.value;
case 'rejected':
throw record.value;
case 'resolved':
return record.value;
}
} else {
const thenable = {
pings: [],
then(resolve) {
if (newRecord.status === 'pending') {
thenable.pings.push(resolve);
} else {
Promise.resolve().then(() => resolve(newRecord.value));
}
},
};
const newRecord = {
status: 'pending',
value: thenable,
};
textCache.set(text, newRecord);
throw thenable;
}
}
function Text({text}) {
return text;
}
function AsyncText({text}) {
return readText(text);
}
function AsyncTextWrapped({as, text}) {
const As = as;
return <As>{readText(text)}</As>;
}
function renderToPipeableStream(jsx, options) {
// Merge options with renderOptions, which may contain featureFlag specific behavior
return ReactDOMFizzServer.renderToPipeableStream(
jsx,
mergeOptions(options, renderOptions),
);
}
it('should asynchronously load a lazy component', async () => {
let resolveA;
const LazyA = React.lazy(() => {
return new Promise(r => {
resolveA = r;
});
});
let resolveB;
const LazyB = React.lazy(() => {
return new Promise(r => {
resolveB = r;
});
});
class TextWithPunctuation extends React.Component {
render() {
return <Text text={this.props.text + this.props.punctuation} />;
}
}
// This tests that default props of the inner element is resolved.
TextWithPunctuation.defaultProps = {
punctuation: '!',
};
await act(() => {
const {pipe} = renderToPipeableStream(
<div>
<div>
<Suspense fallback={<Text text="Loading..." />}>
<LazyA text="Hello" />
</Suspense>
</div>
<div>
<Suspense fallback={<Text text="Loading..." />}>
<LazyB text="world" />
</Suspense>
</div>
</div>,
);
pipe(writable);
});
expect(getVisibleChildren(container)).toEqual(
<div>
<div>Loading...</div>
<div>Loading...</div>
</div>,
);
await act(() => {
resolveA({default: Text});
});
expect(getVisibleChildren(container)).toEqual(
<div>
<div>Hello</div>
<div>Loading...</div>
</div>,
);
await act(() => {
resolveB({default: TextWithPunctuation});
});
expect(getVisibleChildren(container)).toEqual(
<div>
<div>Hello</div>
<div>world!</div>
</div>,
);
});
it('#23331: does not warn about hydration mismatches if something suspended in an earlier sibling', async () => {
const makeApp = () => {
let resolve;
const imports = new Promise(r => {
resolve = () => r({default: () => <span id="async">async</span>});
});
const Lazy = React.lazy(() => imports);
const App = () => (
<div>
<Suspense fallback={<span>Loading...</span>}>
<Lazy />
<span id="after">after</span>
</Suspense>
</div>
);
return [App, resolve];
};
// Server-side
const [App, resolve] = makeApp();
await act(() => {
const {pipe} = renderToPipeableStream(<App />);
pipe(writable);
});
expect(getVisibleChildren(container)).toEqual(
<div>
<span>Loading...</span>
</div>,
);
await act(() => {
resolve();
});
expect(getVisibleChildren(container)).toEqual(
<div>
<span id="async">async</span>
<span id="after">after</span>
</div>,
);
// Client-side
const [HydrateApp, hydrateResolve] = makeApp();
await act(() => {
ReactDOMClient.hydrateRoot(container, <HydrateApp />);
});
expect(getVisibleChildren(container)).toEqual(
<div>
<span id="async">async</span>
<span id="after">after</span>
</div>,
);
await act(() => {
hydrateResolve();
});
expect(getVisibleChildren(container)).toEqual(
<div>
<span id="async">async</span>
<span id="after">after</span>
</div>,
);
});
it('should support nonce for bootstrap and runtime scripts', async () => {
CSPnonce = 'R4nd0m';
try {
let resolve;
const Lazy = React.lazy(() => {
return new Promise(r => {
resolve = r;
});
});
await act(() => {
const {pipe} = renderToPipeableStream(
<div>
<Suspense fallback={<Text text="Loading..." />}>
<Lazy text="Hello" />
</Suspense>
</div>,
{
nonce: 'R4nd0m',
bootstrapScriptContent: 'function noop(){}',
bootstrapScripts: [
'init.js',
{src: 'init2.js', integrity: 'init2hash'},
],
bootstrapModules: [
'init.mjs',
{src: 'init2.mjs', integrity: 'init2hash'},
],
},
);
pipe(writable);
});
expect(getVisibleChildren(container)).toEqual([
<link
rel="preload"
fetchpriority="low"
href="init.js"
as="script"
nonce={CSPnonce}
/>,
<link
rel="preload"
fetchpriority="low"
href="init2.js"
as="script"
nonce={CSPnonce}
integrity="init2hash"
/>,
<link
rel="modulepreload"
fetchpriority="low"
href="init.mjs"
nonce={CSPnonce}
/>,
<link
rel="modulepreload"
fetchpriority="low"
href="init2.mjs"
nonce={CSPnonce}
integrity="init2hash"
/>,
<div>Loading...</div>,
]);
// check that there are 6 scripts with a matching nonce:
// The runtime script, an inline bootstrap script, two bootstrap scripts and two bootstrap modules
expect(
Array.from(container.getElementsByTagName('script')).filter(
node => node.getAttribute('nonce') === CSPnonce,
).length,
).toEqual(gate(flags => flags.shouldUseFizzExternalRuntime) ? 6 : 5);
await act(() => {
resolve({default: Text});
});
expect(getVisibleChildren(container)).toEqual([
<link
rel="preload"
fetchpriority="low"
href="init.js"
as="script"
nonce={CSPnonce}
/>,
<link
rel="preload"
fetchpriority="low"
href="init2.js"
as="script"
nonce={CSPnonce}
integrity="init2hash"
/>,
<link
rel="modulepreload"
fetchpriority="low"
href="init.mjs"
nonce={CSPnonce}
/>,
<link
rel="modulepreload"
fetchpriority="low"
href="init2.mjs"
nonce={CSPnonce}
integrity="init2hash"
/>,
<div>Hello</div>,
]);
} finally {
CSPnonce = null;
}
});
it('should not automatically add nonce to rendered scripts', async () => {
CSPnonce = 'R4nd0m';
try {
await act(async () => {
const {pipe} = renderToPipeableStream(
<html>
<body>
<script nonce={CSPnonce}>{'try { foo() } catch (e) {} ;'}</script>
<script nonce={CSPnonce} src="foo" async={true} />
<script src="bar" />
<script src="baz" integrity="qux" async={true} />
<script type="module" src="quux" async={true} />
<script type="module" src="corge" async={true} />
<script
type="module"
src="grault"
integrity="garply"
async={true}
/>
</body>
</html>,
{
nonce: CSPnonce,
},
);
pipe(writable);
});
expect(
stripExternalRuntimeInNodes(
document.getElementsByTagName('script'),
renderOptions.unstable_externalRuntimeSrc,
).map(n => n.outerHTML),
).toEqual([
`<script nonce="${CSPnonce}" src="foo" async=""></script>`,
`<script src="baz" integrity="qux" async=""></script>`,
`<script type="module" src="quux" async=""></script>`,
`<script type="module" src="corge" async=""></script>`,
`<script type="module" src="grault" integrity="garply" async=""></script>`,
`<script nonce="${CSPnonce}">try { foo() } catch (e) {} ;</script>`,
`<script src="bar"></script>`,
]);
} finally {
CSPnonce = null;
}
});
it('should client render a boundary if a lazy component rejects', async () => {
let rejectComponent;
const promise = new Promise((resolve, reject) => {
rejectComponent = reject;
});
const LazyComponent = React.lazy(() => {
return promise;
});
const LazyLazy = React.lazy(async () => {
return {
default: LazyComponent,
};
});
function Wrapper({children}) {
return children;
}
const LazyWrapper = React.lazy(() => {
return {
then(callback) {
callback({
default: Wrapper,
});
},
};
});
function App({isClient}) {
return (
<div>
<Suspense fallback={<Text text="Loading..." />}>
<LazyWrapper>
{isClient ? <Text text="Hello" /> : <LazyLazy text="Hello" />}
</LazyWrapper>
</Suspense>
</div>
);
}
let bootstrapped = false;
const errors = [];
window.__INIT__ = function () {
bootstrapped = true;
// Attempt to hydrate the content.
ReactDOMClient.hydrateRoot(container, <App isClient={true} />, {
onRecoverableError(error, errorInfo) {
errors.push({error, errorInfo});
},
});
};
const theError = new Error('Test');
const loggedErrors = [];
function onError(x, errorInfo) {
loggedErrors.push(x);
return 'Hash of (' + x.message + ')';
}
const expectedDigest = onError(theError);
loggedErrors.length = 0;
await act(() => {
const {pipe} = renderToPipeableStream(<App isClient={false} />, {
bootstrapScriptContent: '__INIT__();',
onError,
});
pipe(writable);
});
expect(loggedErrors).toEqual([]);
expect(bootstrapped).toBe(true);
await waitForAll([]);
// We're still loading because we're waiting for the server to stream more content.
expect(getVisibleChildren(container)).toEqual(<div>Loading...</div>);
expect(loggedErrors).toEqual([]);
await act(() => {
rejectComponent(theError);
});
expect(loggedErrors).toEqual([theError]);
// We haven't ran the client hydration yet.
expect(getVisibleChildren(container)).toEqual(<div>Loading...</div>);
// Now we can client render it instead.
await waitForAll([]);
expectErrors(
errors,
[
[
'Switched to client rendering because the server rendering errored:\n\n' +
theError.message,
expectedDigest,
componentStack(['Lazy', 'Wrapper', 'Suspense', 'div', 'App']),
],
],
[
[
'The server could not finish this Suspense boundary, likely due to an error during server rendering. Switched to client rendering.',
expectedDigest,
],
],
);
// The client rendered HTML is now in place.
expect(getVisibleChildren(container)).toEqual(<div>Hello</div>);
expect(loggedErrors).toEqual([theError]);
});
it('should asynchronously load a lazy element', async () => {
let resolveElement;
const lazyElement = React.lazy(() => {
return new Promise(r => {
resolveElement = r;
});
});
await act(() => {
const {pipe} = renderToPipeableStream(
<div>
<Suspense fallback={<Text text="Loading..." />}>
{lazyElement}
</Suspense>
</div>,
);
pipe(writable);
});
expect(getVisibleChildren(container)).toEqual(<div>Loading...</div>);
// Because there is no content inside the Suspense boundary that could've
// been written, we expect to not see any additional partial data flushed
// yet.
expect(
stripExternalRuntimeInNodes(
container.childNodes,
renderOptions.unstable_externalRuntimeSrc,
).length,
).toBe(1);
await act(() => {
resolveElement({default: <Text text="Hello" />});
});
expect(getVisibleChildren(container)).toEqual(<div>Hello</div>);
});
it('should client render a boundary if a lazy element rejects', async () => {
let rejectElement;
const element = <Text text="Hello" />;
const lazyElement = React.lazy(() => {
return new Promise((resolve, reject) => {
rejectElement = reject;
});
});
const theError = new Error('Test');
const loggedErrors = [];
function onError(x, errorInfo) {
loggedErrors.push(x);
return 'hash of (' + x.message + ')';
}
const expectedDigest = onError(theError);
loggedErrors.length = 0;
function App({isClient}) {
return (
<div>
<Suspense fallback={<Text text="Loading..." />}>
{isClient ? element : lazyElement}
</Suspense>
</div>
);
}
await act(() => {
const {pipe} = renderToPipeableStream(<App isClient={false} />, {
onError,
});
pipe(writable);
});
expect(loggedErrors).toEqual([]);
const errors = [];
// Attempt to hydrate the content.
ReactDOMClient.hydrateRoot(container, <App isClient={true} />, {
onRecoverableError(error, errorInfo) {
errors.push({error, errorInfo});
},
});
await waitForAll([]);
// We're still loading because we're waiting for the server to stream more content.
expect(getVisibleChildren(container)).toEqual(<div>Loading...</div>);
expect(loggedErrors).toEqual([]);
await act(() => {
rejectElement(theError);
});
expect(loggedErrors).toEqual([theError]);
// We haven't ran the client hydration yet.
expect(getVisibleChildren(container)).toEqual(<div>Loading...</div>);
// Now we can client render it instead.
await waitForAll([]);
expectErrors(
errors,
[
[
'Switched to client rendering because the server rendering errored:\n\n' +
theError.message,
expectedDigest,
componentStack(['Suspense', 'div', 'App']),
],
],
[
[
'The server could not finish this Suspense boundary, likely due to an error during server rendering. Switched to client rendering.',
expectedDigest,
],
],
);
// The client rendered HTML is now in place.
// expect(getVisibleChildren(container)).toEqual(<div>Hello</div>);
expect(loggedErrors).toEqual([theError]);
});
it('Errors in boundaries should be sent to the client and reported on client render - Error before flushing', async () => {
function Indirection({level, children}) {
if (level > 0) {
return <Indirection level={level - 1}>{children}</Indirection>;
}
return children;
}
const theError = new Error('uh oh');
function Erroring({isClient}) {
if (isClient) {
return 'Hello World';
}
throw theError;
}
function App({isClient}) {
return (
<div>
<Suspense fallback={<span>loading...</span>}>
<Indirection level={2}>
<Erroring isClient={isClient} />
</Indirection>
</Suspense>
</div>
);
}
const loggedErrors = [];
function onError(x) {
loggedErrors.push(x);
return 'hash(' + x.message + ')';
}
const expectedDigest = onError(theError);
loggedErrors.length = 0;
await act(() => {
const {pipe} = renderToPipeableStream(
<App />,
{
onError,
},
);
pipe(writable);
});
expect(loggedErrors).toEqual([theError]);
const errors = [];
// Attempt to hydrate the content.
ReactDOMClient.hydrateRoot(container, <App isClient={true} />, {
onRecoverableError(error, errorInfo) {
errors.push({error, errorInfo});
},
});
await waitForAll([]);
expect(getVisibleChildren(container)).toEqual(<div>Hello World</div>);
expectErrors(
errors,