| 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 'react-dom/src/test-utils/FizzTestUtils'; |
| 13 | |
| 14 | // Polyfills for test environment |
| 15 | global.ReadableStream = |
| 16 | require('web-streams-polyfill/ponyfill/es6').ReadableStream; |
| 17 | global.TextEncoder = require('util').TextEncoder; |
| 18 | global.TextDecoder = require('util').TextDecoder; |
| 19 | |
| 20 | // Polyfill stream methods on JSDOM. |
| 21 | global.Blob.prototype.stream = function () { |
| 22 | const impl = Object.getOwnPropertySymbols(this)[0]; |
| 23 | const buffer = this[impl]._buffer; |
| 24 | return new ReadableStream({ |
| 25 | start(c) { |
| 26 | c.enqueue(new Uint8Array(buffer)); |
| 27 | c.close(); |
| 28 | }, |
| 29 | }); |
| 30 | }; |
| 31 | |
| 32 | global.Blob.prototype.text = async function () { |
| 33 | const impl = Object.getOwnPropertySymbols(this)[0]; |
| 34 | return this[impl]._buffer.toString('utf8'); |
| 35 | }; |
| 36 | |
| 37 | // Don't wait before processing work on the server. |
| 38 | // TODO: we can replace this with FlightServer.act(). |
| 39 | global.setTimeout = cb => cb(); |
| 40 | |
| 41 | let container; |
| 42 | let clientExports; |
| 43 | let serverExports; |
| 44 | let webpackMap; |
| 45 | let webpackServerMap; |
| 46 | let React; |
| 47 | let ReactDOMServer; |
| 48 | let ReactServerDOMServer; |
| 49 | let ReactServerDOMClient; |
| 50 | let ReactDOMClient; |
| 51 | let useActionState; |
| 52 | let act; |
| 53 | let assertConsoleErrorDev; |
| 54 | |
| 55 | describe('ReactFlightDOMForm', () => { |
| 56 | beforeEach(() => { |
| 57 | jest.resetModules(); |
| 58 | // Simulate the condition resolution |
| 59 | jest.mock('react', () => require('react/react.react-server')); |
| 60 | jest.mock('react-server-dom-webpack/server', () => |
| 61 | require('react-server-dom-webpack/server.edge'), |
| 62 | ); |
| 63 | ReactServerDOMServer = require('react-server-dom-webpack/server.edge'); |
| 64 | const WebpackMock = require('./utils/WebpackMock'); |
| 65 | clientExports = WebpackMock.clientExports; |
| 66 | serverExports = WebpackMock.serverExports; |
| 67 | webpackMap = WebpackMock.webpackMap; |
| 68 | webpackServerMap = WebpackMock.webpackServerMap; |
| 69 | __unmockReact(); |
| 70 | jest.resetModules(); |
| 71 | React = require('react'); |
| 72 | ReactServerDOMClient = require('react-server-dom-webpack/client.edge'); |
| 73 | ReactDOMServer = require('react-dom/server.edge'); |
| 74 | ReactDOMClient = require('react-dom/client'); |
| 75 | act = React.act; |
| 76 | assertConsoleErrorDev = |
| 77 | require('internal-test-utils').assertConsoleErrorDev; |
| 78 | |
| 79 | // TODO: Test the old api but it warns so needs warnings to be asserted. |
| 80 | // if (__VARIANT__) { |
| 81 | // Remove after API is deleted. |
| 82 | // useActionState = require('react-dom').useFormState; |
| 83 | // } |
| 84 | useActionState = require('react').useActionState; |
| 85 | container = document.createElement('div'); |
| 86 | document.body.appendChild(container); |
| 87 | }); |
| 88 | |
| 89 | afterEach(() => { |
| 90 | document.body.removeChild(container); |
| 91 | }); |
| 92 | |
| 93 | async function POST(formData) { |
| 94 | const boundAction = await ReactServerDOMServer.decodeAction( |
| 95 | formData, |
| 96 | webpackServerMap, |
| 97 | ); |
| 98 | const returnValue = boundAction(); |
| 99 | const formState = await ReactServerDOMServer.decodeFormState( |
| 100 | await returnValue, |
| 101 | formData, |
| 102 | webpackServerMap, |
| 103 | ); |
| 104 | return {returnValue, formState}; |
| 105 | } |
| 106 | |
| 107 | function submit(submitter) { |
| 108 | const form = submitter.form || submitter; |
| 109 | if (!submitter.form) { |
| 110 | submitter = undefined; |
| 111 | } |
| 112 | const submitEvent = new Event('submit', {bubbles: true, cancelable: true}); |
| 113 | submitEvent.submitter = submitter; |
| 114 | const returnValue = form.dispatchEvent(submitEvent); |
| 115 | if (!returnValue) { |
| 116 | return; |
| 117 | } |
| 118 | const action = |
| 119 | (submitter && submitter.getAttribute('formaction')) || form.action; |
| 120 | if (!/\s*javascript:/i.test(action)) { |
| 121 | const method = (submitter && submitter.formMethod) || form.method; |
| 122 | const encType = (submitter && submitter.formEnctype) || form.enctype; |
| 123 | if (method === 'post' && encType === 'multipart/form-data') { |
| 124 | const formData = new FormData(form, submitter); |
| 125 | return POST(formData); |
| 126 | } |
| 127 | throw new Error('Navigate to: ' + action); |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | async function readIntoContainer(stream) { |
| 132 | const reader = stream.getReader(); |
| 133 | let result = ''; |
| 134 | while (true) { |
| 135 | const {done, value} = await reader.read(); |
| 136 | if (done) { |
| 137 | break; |
| 138 | } |
| 139 | result += Buffer.from(value).toString('utf8'); |
| 140 | } |
| 141 | const temp = document.createElement('div'); |
| 142 | temp.innerHTML = result; |
| 143 | insertNodesAndExecuteScripts(temp, container, null); |
| 144 | } |
| 145 | |
| 146 | it('can submit a passed server action without hydrating it', async () => { |
| 147 | let foo = null; |
| 148 | |
| 149 | const serverAction = serverExports(function action(formData) { |
| 150 | foo = formData.get('foo'); |
| 151 | return 'hello'; |
| 152 | }); |
| 153 | function App() { |
| 154 | return ( |
| 155 | <form action={serverAction}> |
| 156 | <input type="text" name="foo" defaultValue="bar" /> |
| 157 | </form> |
| 158 | ); |
| 159 | } |
| 160 | const rscStream = ReactServerDOMServer.renderToReadableStream(<App />); |
| 161 | const response = ReactServerDOMClient.createFromReadableStream(rscStream, { |
| 162 | serverConsumerManifest: { |
| 163 | moduleMap: null, |
| 164 | moduleLoading: null, |
| 165 | }, |
| 166 | }); |
| 167 | const ssrStream = await ReactDOMServer.renderToReadableStream(response); |
| 168 | await readIntoContainer(ssrStream); |
| 169 | |
| 170 | const form = container.firstChild; |
| 171 | |
| 172 | expect(foo).toBe(null); |
| 173 | |
| 174 | const {returnValue} = await submit(form); |
| 175 | |
| 176 | expect(returnValue).toBe('hello'); |
| 177 | expect(foo).toBe('bar'); |
| 178 | }); |
| 179 | |
| 180 | it('can submit an imported server action without hydrating it', async () => { |
| 181 | let foo = null; |
| 182 | |
| 183 | const ServerModule = serverExports(function action(formData) { |
| 184 | foo = formData.get('foo'); |
| 185 | return 'hi'; |
| 186 | }); |
| 187 | const serverAction = ReactServerDOMClient.createServerReference( |
| 188 | ServerModule.$$id, |
| 189 | ); |
| 190 | function App() { |
| 191 | return ( |
| 192 | <form action={serverAction}> |
| 193 | <input type="text" name="foo" defaultValue="bar" /> |
| 194 | </form> |
| 195 | ); |
| 196 | } |
| 197 | |
| 198 | const ssrStream = await ReactDOMServer.renderToReadableStream(<App />); |
| 199 | await readIntoContainer(ssrStream); |
| 200 | |
| 201 | const form = container.firstChild; |
| 202 | |
| 203 | expect(foo).toBe(null); |
| 204 | |
| 205 | const {returnValue} = await submit(form); |
| 206 | |
| 207 | expect(returnValue).toBe('hi'); |
| 208 | |
| 209 | expect(foo).toBe('bar'); |
| 210 | }); |
| 211 | |
| 212 | it('can submit a complex closure server action without hydrating it', async () => { |
| 213 | let foo = null; |
| 214 | |
| 215 | const serverAction = serverExports(function action(bound, formData) { |
| 216 | foo = formData.get('foo') + bound.complex; |
| 217 | return 'hello'; |
| 218 | }); |
| 219 | function App() { |
| 220 | return ( |
| 221 | <form action={serverAction.bind(null, {complex: 'object'})}> |
| 222 | <input type="text" name="foo" defaultValue="bar" /> |
| 223 | </form> |
| 224 | ); |
| 225 | } |
| 226 | const rscStream = ReactServerDOMServer.renderToReadableStream(<App />); |
| 227 | const response = ReactServerDOMClient.createFromReadableStream(rscStream, { |
| 228 | serverConsumerManifest: { |
| 229 | moduleMap: null, |
| 230 | moduleLoading: null, |
| 231 | }, |
| 232 | }); |
| 233 | const ssrStream = await ReactDOMServer.renderToReadableStream(response); |
| 234 | await readIntoContainer(ssrStream); |
| 235 | |
| 236 | const form = container.firstChild; |
| 237 | |
| 238 | expect(foo).toBe(null); |
| 239 | |
| 240 | const {returnValue} = await submit(form); |
| 241 | |
| 242 | expect(returnValue).toBe('hello'); |
| 243 | expect(foo).toBe('barobject'); |
| 244 | }); |
| 245 | |
| 246 | it('can submit a multiple complex closure server action without hydrating it', async () => { |
| 247 | let foo = null; |
| 248 | |
| 249 | const serverAction = serverExports(function action(bound, formData) { |
| 250 | foo = formData.get('foo') + bound.complex; |
| 251 | return 'hello' + bound.complex; |
| 252 | }); |
| 253 | function App() { |
| 254 | return ( |
| 255 | <form action={serverAction.bind(null, {complex: 'a'})}> |
| 256 | <input type="text" name="foo" defaultValue="bar" /> |
| 257 | <button formAction={serverAction.bind(null, {complex: 'b'})} /> |
| 258 | <button formAction={serverAction.bind(null, {complex: 'c'})} /> |
| 259 | <input |
| 260 | type="submit" |
| 261 | formAction={serverAction.bind(null, {complex: 'd'})} |
| 262 | /> |
| 263 | </form> |
| 264 | ); |
| 265 | } |
| 266 | const rscStream = ReactServerDOMServer.renderToReadableStream(<App />); |
| 267 | const response = ReactServerDOMClient.createFromReadableStream(rscStream, { |
| 268 | serverConsumerManifest: { |
| 269 | moduleMap: null, |
| 270 | moduleLoading: null, |
| 271 | }, |
| 272 | }); |
| 273 | const ssrStream = await ReactDOMServer.renderToReadableStream(response); |
| 274 | await readIntoContainer(ssrStream); |
| 275 | |
| 276 | const form = container.firstChild; |
| 277 | |
| 278 | expect(foo).toBe(null); |
| 279 | |
| 280 | const {returnValue} = await submit(form.getElementsByTagName('button')[1]); |
| 281 | |
| 282 | expect(returnValue).toBe('helloc'); |
| 283 | expect(foo).toBe('barc'); |
| 284 | }); |
| 285 | |
| 286 | it('can bind an imported server action on the client without hydrating it', async () => { |
| 287 | let foo = null; |
| 288 | |
| 289 | const ServerModule = serverExports(function action(bound, formData) { |
| 290 | foo = formData.get('foo') + bound.complex; |
| 291 | return 'hello'; |
| 292 | }); |
| 293 | const serverAction = ReactServerDOMClient.createServerReference( |
| 294 | ServerModule.$$id, |
| 295 | ); |
| 296 | function Client() { |
| 297 | return ( |
| 298 | <form action={serverAction.bind(null, {complex: 'object'})}> |
| 299 | <input type="text" name="foo" defaultValue="bar" /> |
| 300 | </form> |
| 301 | ); |
| 302 | } |
| 303 | |
| 304 | const ssrStream = await ReactDOMServer.renderToReadableStream(<Client />); |
| 305 | await readIntoContainer(ssrStream); |
| 306 | |
| 307 | const form = container.firstChild; |
| 308 | |
| 309 | expect(foo).toBe(null); |
| 310 | |
| 311 | const {returnValue} = await submit(form); |
| 312 | |
| 313 | expect(returnValue).toBe('hello'); |
| 314 | expect(foo).toBe('barobject'); |
| 315 | }); |
| 316 | |
| 317 | it('can bind a server action on the client without hydrating it', async () => { |
| 318 | let foo = null; |
| 319 | |
| 320 | const serverAction = serverExports(function action(bound, formData) { |
| 321 | foo = formData.get('foo') + bound.complex; |
| 322 | return 'hello'; |
| 323 | }); |
| 324 | |
| 325 | function Client({action}) { |
| 326 | return ( |
| 327 | <form action={action.bind(null, {complex: 'object'})}> |
| 328 | <input type="text" name="foo" defaultValue="bar" /> |
| 329 | </form> |
| 330 | ); |
| 331 | } |
| 332 | const ClientRef = await clientExports(Client); |
| 333 | |
| 334 | const rscStream = ReactServerDOMServer.renderToReadableStream( |
| 335 | <ClientRef action={serverAction} />, |
| 336 | webpackMap, |
| 337 | ); |
| 338 | const response = ReactServerDOMClient.createFromReadableStream(rscStream, { |
| 339 | serverConsumerManifest: { |
| 340 | moduleMap: null, |
| 341 | moduleLoading: null, |
| 342 | }, |
| 343 | }); |
| 344 | const ssrStream = await ReactDOMServer.renderToReadableStream(response); |
| 345 | await readIntoContainer(ssrStream); |
| 346 | |
| 347 | const form = container.firstChild; |
| 348 | |
| 349 | expect(foo).toBe(null); |
| 350 | |
| 351 | const {returnValue} = await submit(form); |
| 352 | |
| 353 | expect(returnValue).toBe('hello'); |
| 354 | expect(foo).toBe('barobject'); |
| 355 | }); |
| 356 | |
| 357 | it("useActionState's dispatch binds the initial state to the provided action", async () => { |
| 358 | const serverAction = serverExports( |
| 359 | async function action(prevState, formData) { |
| 360 | return { |
| 361 | count: |
| 362 | prevState.count + parseInt(formData.get('incrementAmount'), 10), |
| 363 | }; |
| 364 | }, |
| 365 | ); |
| 366 | |
| 367 | const initialState = {count: 1}; |
| 368 | function Client({action}) { |
| 369 | const [state, dispatch, isPending] = useActionState(action, initialState); |
| 370 | return ( |
| 371 | <form action={dispatch}> |
| 372 | <span>{isPending ? 'Pending...' : ''}</span> |
| 373 | <span>Count: {state.count}</span> |
| 374 | <input type="text" name="incrementAmount" defaultValue="5" /> |
| 375 | </form> |
| 376 | ); |
| 377 | } |
| 378 | |
| 379 | const ClientRef = await clientExports(Client); |
| 380 | |
| 381 | const rscStream = ReactServerDOMServer.renderToReadableStream( |
| 382 | <ClientRef action={serverAction} />, |
| 383 | webpackMap, |
| 384 | ); |
| 385 | const response = ReactServerDOMClient.createFromReadableStream(rscStream, { |
| 386 | serverConsumerManifest: { |
| 387 | moduleMap: null, |
| 388 | moduleLoading: null, |
| 389 | }, |
| 390 | }); |
| 391 | const ssrStream = await ReactDOMServer.renderToReadableStream(response); |
| 392 | await readIntoContainer(ssrStream); |
| 393 | |
| 394 | const form = container.getElementsByTagName('form')[0]; |
| 395 | const pendingSpan = container.getElementsByTagName('span')[0]; |
| 396 | const stateSpan = container.getElementsByTagName('span')[1]; |
| 397 | expect(pendingSpan.textContent).toBe(''); |
| 398 | expect(stateSpan.textContent).toBe('Count: 1'); |
| 399 | |
| 400 | const {returnValue} = await submit(form); |
| 401 | expect(await returnValue).toEqual({count: 6}); |
| 402 | }); |
| 403 | |
| 404 | it('useActionState can reuse state during MPA form submission', async () => { |
| 405 | const serverAction = serverExports( |
| 406 | async function action(prevState, formData) { |
| 407 | return prevState + 1; |
| 408 | }, |
| 409 | ); |
| 410 | |
| 411 | function Form({action}) { |
| 412 | const [count, dispatch, isPending] = useActionState(action, 1); |
| 413 | return ( |
| 414 | <form action={dispatch}> |
| 415 | {isPending ? 'Pending...' : ''} |
| 416 | {count} |
| 417 | </form> |
| 418 | ); |
| 419 | } |
| 420 | |
| 421 | function Client({action}) { |
| 422 | return ( |
| 423 | <div> |
| 424 | <Form action={action} /> |
| 425 | <Form action={action} /> |
| 426 | <Form action={action} /> |
| 427 | </div> |
| 428 | ); |
| 429 | } |
| 430 | |
| 431 | const ClientRef = await clientExports(Client); |
| 432 | |
| 433 | const rscStream = ReactServerDOMServer.renderToReadableStream( |
| 434 | <ClientRef action={serverAction} />, |
| 435 | webpackMap, |
| 436 | ); |
| 437 | const response = ReactServerDOMClient.createFromReadableStream(rscStream, { |
| 438 | serverConsumerManifest: { |
| 439 | moduleMap: null, |
| 440 | moduleLoading: null, |
| 441 | }, |
| 442 | }); |
| 443 | const ssrStream = await ReactDOMServer.renderToReadableStream(response); |
| 444 | await readIntoContainer(ssrStream); |
| 445 | |
| 446 | expect(container.textContent).toBe('111'); |
| 447 | |
| 448 | // There are three identical forms. We're going to submit the second one. |
| 449 | const form = container.getElementsByTagName('form')[1]; |
| 450 | const {formState} = await submit(form); |
| 451 | |
| 452 | // Simulate an MPA form submission by resetting the container and |
| 453 | // rendering again. |
| 454 | container.innerHTML = ''; |
| 455 | |
| 456 | const postbackRscStream = ReactServerDOMServer.renderToReadableStream( |
| 457 | <ClientRef action={serverAction} />, |
| 458 | webpackMap, |
| 459 | ); |
| 460 | const postbackResponse = ReactServerDOMClient.createFromReadableStream( |
| 461 | postbackRscStream, |
| 462 | { |
| 463 | serverConsumerManifest: { |
| 464 | moduleMap: null, |
| 465 | moduleLoading: null, |
| 466 | }, |
| 467 | }, |
| 468 | ); |
| 469 | const postbackSsrStream = await ReactDOMServer.renderToReadableStream( |
| 470 | postbackResponse, |
| 471 | {formState: formState}, |
| 472 | ); |
| 473 | await readIntoContainer(postbackSsrStream); |
| 474 | |
| 475 | // Only the second form's state should have been updated. |
| 476 | expect(container.textContent).toBe('121'); |
| 477 | |
| 478 | // Test that it hydrates correctly |
| 479 | if (__DEV__) { |
| 480 | // TODO: Can't use our internal act() util that works in production |
| 481 | // because it works by overriding the timer APIs, which this test module |
| 482 | // also does. Remove dev condition once FlightServer.act() is available. |
| 483 | await act(() => { |
| 484 | ReactDOMClient.hydrateRoot(container, postbackResponse, { |
| 485 | formState: formState, |
| 486 | }); |
| 487 | }); |
| 488 | expect(container.textContent).toBe('121'); |
| 489 | } |
| 490 | }); |
| 491 | |
| 492 | it( |
| 493 | 'useActionState preserves state if arity is the same, but different ' + |
| 494 | 'arguments are bound (i.e. inline closure)', |
| 495 | async () => { |
| 496 | const serverAction = serverExports( |
| 497 | async function action(stepSize, prevState, formData) { |
| 498 | return prevState + stepSize; |
| 499 | }, |
| 500 | ); |
| 501 | |
| 502 | function Form({action}) { |
| 503 | const [count, dispatch, isPending] = useActionState(action, 1); |
| 504 | return ( |
| 505 | <form action={dispatch}> |
| 506 | {isPending ? 'Pending...' : ''} |
| 507 | {count} |
| 508 | </form> |
| 509 | ); |
| 510 | } |
| 511 | |
| 512 | function Client({action}) { |
| 513 | return ( |
| 514 | <div> |
| 515 | <Form action={action} /> |
| 516 | <Form action={action} /> |
| 517 | <Form action={action} /> |
| 518 | </div> |
| 519 | ); |
| 520 | } |
| 521 | |
| 522 | const ClientRef = await clientExports(Client); |
| 523 | |
| 524 | const rscStream = ReactServerDOMServer.renderToReadableStream( |
| 525 | // Note: `.bind` is the same as an inline closure with 'use server' |
| 526 | <ClientRef action={serverAction.bind(null, 1)} />, |
| 527 | webpackMap, |
| 528 | ); |
| 529 | const response = ReactServerDOMClient.createFromReadableStream( |
| 530 | rscStream, |
| 531 | { |
| 532 | serverConsumerManifest: { |
| 533 | moduleMap: null, |
| 534 | moduleLoading: null, |
| 535 | }, |
| 536 | }, |
| 537 | ); |
| 538 | const ssrStream = await ReactDOMServer.renderToReadableStream(response); |
| 539 | await readIntoContainer(ssrStream); |
| 540 | |
| 541 | expect(container.textContent).toBe('111'); |
| 542 | |
| 543 | // There are three identical forms. We're going to submit the second one. |
| 544 | const form = container.getElementsByTagName('form')[1]; |
| 545 | const {formState} = await submit(form); |
| 546 | |
| 547 | // Simulate an MPA form submission by resetting the container and |
| 548 | // rendering again. |
| 549 | container.innerHTML = ''; |
| 550 | |
| 551 | // On the next page, the same server action is rendered again, but with |
| 552 | // a different bound stepSize argument. We should treat this as the same |
| 553 | // action signature. |
| 554 | const postbackRscStream = ReactServerDOMServer.renderToReadableStream( |
| 555 | // Note: `.bind` is the same as an inline closure with 'use server' |
| 556 | <ClientRef action={serverAction.bind(null, 5)} />, |
| 557 | webpackMap, |
| 558 | ); |
| 559 | const postbackResponse = ReactServerDOMClient.createFromReadableStream( |
| 560 | postbackRscStream, |
| 561 | { |
| 562 | serverConsumerManifest: { |
| 563 | moduleMap: null, |
| 564 | moduleLoading: null, |
| 565 | }, |
| 566 | }, |
| 567 | ); |
| 568 | const postbackSsrStream = await ReactDOMServer.renderToReadableStream( |
| 569 | postbackResponse, |
| 570 | {formState: formState}, |
| 571 | ); |
| 572 | await readIntoContainer(postbackSsrStream); |
| 573 | |
| 574 | // The state should have been preserved because the action signatures are |
| 575 | // the same. (Note that the amount increased by 1, because that was the |
| 576 | // value of stepSize at the time the form was submitted) |
| 577 | expect(container.textContent).toBe('121'); |
| 578 | |
| 579 | // Now submit the form again. This time, the state should increase by 5 |
| 580 | // because the stepSize argument has changed. |
| 581 | const form2 = container.getElementsByTagName('form')[1]; |
| 582 | const {formState: formState2} = await submit(form2); |
| 583 | |
| 584 | container.innerHTML = ''; |
| 585 | |
| 586 | const postbackRscStream2 = ReactServerDOMServer.renderToReadableStream( |
| 587 | // Note: `.bind` is the same as an inline closure with 'use server' |
| 588 | <ClientRef action={serverAction.bind(null, 5)} />, |
| 589 | webpackMap, |
| 590 | ); |
| 591 | const postbackResponse2 = ReactServerDOMClient.createFromReadableStream( |
| 592 | postbackRscStream2, |
| 593 | { |
| 594 | serverConsumerManifest: { |
| 595 | moduleMap: null, |
| 596 | moduleLoading: null, |
| 597 | }, |
| 598 | }, |
| 599 | ); |
| 600 | const postbackSsrStream2 = await ReactDOMServer.renderToReadableStream( |
| 601 | postbackResponse2, |
| 602 | {formState: formState2}, |
| 603 | ); |
| 604 | await readIntoContainer(postbackSsrStream2); |
| 605 | |
| 606 | expect(container.textContent).toBe('171'); |
| 607 | }, |
| 608 | ); |
| 609 | |
| 610 | it('useActionState does not reuse state if action signatures are different', async () => { |
| 611 | // This is the same as the previous test, except instead of using bind to |
| 612 | // configure the server action (i.e. a closure), it swaps the action. |
| 613 | const increaseBy1 = serverExports( |
| 614 | async function action(prevState, formData) { |
| 615 | return prevState + 1; |
| 616 | }, |
| 617 | ); |
| 618 | |
| 619 | const increaseBy5 = serverExports( |
| 620 | async function action(prevState, formData) { |
| 621 | return prevState + 5; |
| 622 | }, |
| 623 | ); |
| 624 | |
| 625 | function Form({action}) { |
| 626 | const [count, dispatch, isPending] = useActionState(action, 1); |
| 627 | return ( |
| 628 | <form action={dispatch}> |
| 629 | {isPending ? 'Pending...' : ''} |
| 630 | {count} |
| 631 | </form> |
| 632 | ); |
| 633 | } |
| 634 | |
| 635 | function Client({action}) { |
| 636 | return ( |
| 637 | <div> |
| 638 | <Form action={action} /> |
| 639 | <Form action={action} /> |
| 640 | <Form action={action} /> |
| 641 | </div> |
| 642 | ); |
| 643 | } |
| 644 | |
| 645 | const ClientRef = await clientExports(Client); |
| 646 | |
| 647 | const rscStream = ReactServerDOMServer.renderToReadableStream( |
| 648 | <ClientRef action={increaseBy1} />, |
| 649 | webpackMap, |
| 650 | ); |
| 651 | const response = ReactServerDOMClient.createFromReadableStream(rscStream, { |
| 652 | serverConsumerManifest: { |
| 653 | moduleMap: null, |
| 654 | moduleLoading: null, |
| 655 | }, |
| 656 | }); |
| 657 | const ssrStream = await ReactDOMServer.renderToReadableStream(response); |
| 658 | await readIntoContainer(ssrStream); |
| 659 | |
| 660 | expect(container.textContent).toBe('111'); |
| 661 | |
| 662 | // There are three identical forms. We're going to submit the second one. |
| 663 | const form = container.getElementsByTagName('form')[1]; |
| 664 | const {formState} = await submit(form); |
| 665 | |
| 666 | // Simulate an MPA form submission by resetting the container and |
| 667 | // rendering again. |
| 668 | container.innerHTML = ''; |
| 669 | |
| 670 | // On the next page, a different server action is rendered. It should not |
| 671 | // reuse the state from the previous page. |
| 672 | const postbackRscStream = ReactServerDOMServer.renderToReadableStream( |
| 673 | <ClientRef action={increaseBy5} />, |
| 674 | webpackMap, |
| 675 | ); |
| 676 | const postbackResponse = ReactServerDOMClient.createFromReadableStream( |
| 677 | postbackRscStream, |
| 678 | { |
| 679 | serverConsumerManifest: { |
| 680 | moduleMap: null, |
| 681 | moduleLoading: null, |
| 682 | }, |
| 683 | }, |
| 684 | ); |
| 685 | const postbackSsrStream = await ReactDOMServer.renderToReadableStream( |
| 686 | postbackResponse, |
| 687 | {formState: formState}, |
| 688 | ); |
| 689 | await readIntoContainer(postbackSsrStream); |
| 690 | |
| 691 | // The state should not have been preserved because the action signatures |
| 692 | // are not the same. |
| 693 | expect(container.textContent).toBe('111'); |
| 694 | }); |
| 695 | |
| 696 | it('when permalink is provided, useActionState compares that instead of the keypath', async () => { |
| 697 | const serverAction = serverExports( |
| 698 | async function action(prevState, formData) { |
| 699 | return prevState + 1; |
| 700 | }, |
| 701 | ); |
| 702 | |
| 703 | function Form({action, permalink}) { |
| 704 | const [count, dispatch, isPending] = useActionState(action, 1, permalink); |
| 705 | return ( |
| 706 | <form action={dispatch}> |
| 707 | {isPending ? 'Pending...' : ''} |
| 708 | {count} |
| 709 | </form> |
| 710 | ); |
| 711 | } |
| 712 | |
| 713 | function Page1({action, permalink}) { |
| 714 | return <Form action={action} permalink={permalink} />; |
| 715 | } |
| 716 | |
| 717 | function Page2({action, permalink}) { |
| 718 | return <Form action={action} permalink={permalink} />; |
| 719 | } |
| 720 | |
| 721 | const Page1Ref = await clientExports(Page1); |
| 722 | const Page2Ref = await clientExports(Page2); |
| 723 | |
| 724 | const rscStream = ReactServerDOMServer.renderToReadableStream( |
| 725 | <Page1Ref action={serverAction} permalink="/permalink" />, |
| 726 | webpackMap, |
| 727 | ); |
| 728 | const response = ReactServerDOMClient.createFromReadableStream(rscStream, { |
| 729 | serverConsumerManifest: { |
| 730 | moduleMap: null, |
| 731 | moduleLoading: null, |
| 732 | }, |
| 733 | }); |
| 734 | const ssrStream = await ReactDOMServer.renderToReadableStream(response); |
| 735 | await readIntoContainer(ssrStream); |
| 736 | |
| 737 | expect(container.textContent).toBe('1'); |
| 738 | |
| 739 | // Submit the form |
| 740 | const form = container.getElementsByTagName('form')[0]; |
| 741 | const {formState} = await submit(form); |
| 742 | |
| 743 | // Simulate an MPA form submission by resetting the container and |
| 744 | // rendering again. |
| 745 | container.innerHTML = ''; |
| 746 | |
| 747 | // On the next page, the same server action is rendered again, but in |
| 748 | // a different component tree. However, because a permalink option was |
| 749 | // passed, the state should be preserved. |
| 750 | const postbackRscStream = ReactServerDOMServer.renderToReadableStream( |
| 751 | <Page2Ref action={serverAction} permalink="/permalink" />, |
| 752 | webpackMap, |
| 753 | ); |
| 754 | const postbackResponse = ReactServerDOMClient.createFromReadableStream( |
| 755 | postbackRscStream, |
| 756 | { |
| 757 | serverConsumerManifest: { |
| 758 | moduleMap: null, |
| 759 | moduleLoading: null, |
| 760 | }, |
| 761 | }, |
| 762 | ); |
| 763 | const postbackSsrStream = await ReactDOMServer.renderToReadableStream( |
| 764 | postbackResponse, |
| 765 | {formState: formState}, |
| 766 | ); |
| 767 | await readIntoContainer(postbackSsrStream); |
| 768 | |
| 769 | expect(container.textContent).toBe('2'); |
| 770 | |
| 771 | // Now submit the form again. This time, the permalink will be different, so |
| 772 | // the state is not preserved. |
| 773 | const form2 = container.getElementsByTagName('form')[0]; |
| 774 | const {formState: formState2} = await submit(form2); |
| 775 | |
| 776 | container.innerHTML = ''; |
| 777 | |
| 778 | const postbackRscStream2 = ReactServerDOMServer.renderToReadableStream( |
| 779 | <Page1Ref action={serverAction} permalink="/some-other-permalink" />, |
| 780 | webpackMap, |
| 781 | ); |
| 782 | const postbackResponse2 = ReactServerDOMClient.createFromReadableStream( |
| 783 | postbackRscStream2, |
| 784 | { |
| 785 | serverConsumerManifest: { |
| 786 | moduleMap: null, |
| 787 | moduleLoading: null, |
| 788 | }, |
| 789 | }, |
| 790 | ); |
| 791 | const postbackSsrStream2 = await ReactDOMServer.renderToReadableStream( |
| 792 | postbackResponse2, |
| 793 | {formState: formState2}, |
| 794 | ); |
| 795 | await readIntoContainer(postbackSsrStream2); |
| 796 | |
| 797 | // The state was reset because the permalink didn't match |
| 798 | expect(container.textContent).toBe('1'); |
| 799 | }); |
| 800 | |
| 801 | it('useActionState can change the action URL with the `permalink` argument', async () => { |
| 802 | const serverAction = serverExports(function action(prevState) { |
| 803 | return {state: prevState.count + 1}; |
| 804 | }); |
| 805 | |
| 806 | const initialState = {count: 1}; |
| 807 | function Client({action}) { |
| 808 | const [state, dispatch, isPending] = useActionState( |
| 809 | action, |
| 810 | initialState, |
| 811 | '/permalink', |
| 812 | ); |
| 813 | return ( |
| 814 | <form action={dispatch}> |
| 815 | <span>{isPending ? 'Pending...' : ''}</span> |
| 816 | <span>Count: {state.count}</span> |
| 817 | </form> |
| 818 | ); |
| 819 | } |
| 820 | |
| 821 | const ClientRef = await clientExports(Client); |
| 822 | |
| 823 | const rscStream = ReactServerDOMServer.renderToReadableStream( |
| 824 | <ClientRef action={serverAction} />, |
| 825 | webpackMap, |
| 826 | ); |
| 827 | const response = ReactServerDOMClient.createFromReadableStream(rscStream, { |
| 828 | serverConsumerManifest: { |
| 829 | moduleMap: null, |
| 830 | moduleLoading: null, |
| 831 | }, |
| 832 | }); |
| 833 | const ssrStream = await ReactDOMServer.renderToReadableStream(response); |
| 834 | await readIntoContainer(ssrStream); |
| 835 | |
| 836 | const form = container.getElementsByTagName('form')[0]; |
| 837 | const pendingSpan = container.getElementsByTagName('span')[0]; |
| 838 | const stateSpan = container.getElementsByTagName('span')[1]; |
| 839 | expect(pendingSpan.textContent).toBe(''); |
| 840 | expect(stateSpan.textContent).toBe('Count: 1'); |
| 841 | |
| 842 | expect(form.action).toBe('http://localhost/permalink'); |
| 843 | }); |
| 844 | |
| 845 | it('useActionState `permalink` is coerced to string', async () => { |
| 846 | const serverAction = serverExports(function action(prevState) { |
| 847 | return {state: prevState.count + 1}; |
| 848 | }); |
| 849 | |
| 850 | class Permalink { |
| 851 | toString() { |
| 852 | return '/permalink'; |
| 853 | } |
| 854 | } |
| 855 | |
| 856 | const permalink = new Permalink(); |
| 857 | |
| 858 | const initialState = {count: 1}; |
| 859 | function Client({action}) { |
| 860 | const [state, dispatch, isPending] = useActionState( |
| 861 | action, |
| 862 | initialState, |
| 863 | permalink, |
| 864 | ); |
| 865 | return ( |
| 866 | <form action={dispatch}> |
| 867 | <span>{isPending ? 'Pending...' : ''}</span> |
| 868 | <span>Count: {state.count}</span> |
| 869 | </form> |
| 870 | ); |
| 871 | } |
| 872 | |
| 873 | const ClientRef = await clientExports(Client); |
| 874 | |
| 875 | const rscStream = ReactServerDOMServer.renderToReadableStream( |
| 876 | <ClientRef action={serverAction} />, |
| 877 | webpackMap, |
| 878 | ); |
| 879 | const response = ReactServerDOMClient.createFromReadableStream(rscStream, { |
| 880 | serverConsumerManifest: { |
| 881 | moduleMap: null, |
| 882 | moduleLoading: null, |
| 883 | }, |
| 884 | }); |
| 885 | const ssrStream = await ReactDOMServer.renderToReadableStream(response); |
| 886 | await readIntoContainer(ssrStream); |
| 887 | |
| 888 | const form = container.getElementsByTagName('form')[0]; |
| 889 | const pendingSpan = container.getElementsByTagName('span')[0]; |
| 890 | const stateSpan = container.getElementsByTagName('span')[1]; |
| 891 | expect(pendingSpan.textContent).toBe(''); |
| 892 | expect(stateSpan.textContent).toBe('Count: 1'); |
| 893 | |
| 894 | expect(form.action).toBe('http://localhost/permalink'); |
| 895 | }); |
| 896 | |
| 897 | it('useActionState can return JSX state during MPA form submission', async () => { |
| 898 | const serverAction = serverExports( |
| 899 | async function action(prevState, formData) { |
| 900 | return <div>error message</div>; |
| 901 | }, |
| 902 | ); |
| 903 | |
| 904 | function Form({action}) { |
| 905 | const [errorMsg, dispatch] = useActionState(action, null); |
| 906 | return <form action={dispatch}>{errorMsg}</form>; |
| 907 | } |
| 908 | |
| 909 | const FormRef = await clientExports(Form); |
| 910 | |
| 911 | const rscStream = ReactServerDOMServer.renderToReadableStream( |
| 912 | <FormRef action={serverAction} />, |
| 913 | webpackMap, |
| 914 | ); |
| 915 | const response = ReactServerDOMClient.createFromReadableStream(rscStream, { |
| 916 | serverConsumerManifest: { |
| 917 | moduleMap: null, |
| 918 | moduleLoading: null, |
| 919 | }, |
| 920 | }); |
| 921 | const ssrStream = await ReactDOMServer.renderToReadableStream(response); |
| 922 | await readIntoContainer(ssrStream); |
| 923 | |
| 924 | const form1 = container.getElementsByTagName('form')[0]; |
| 925 | expect(form1.textContent).toBe(''); |
| 926 | |
| 927 | async function submitTheForm() { |
| 928 | const form = container.getElementsByTagName('form')[0]; |
| 929 | const {formState} = await submit(form); |
| 930 | |
| 931 | // Simulate an MPA form submission by resetting the container and |
| 932 | // rendering again. |
| 933 | container.innerHTML = ''; |
| 934 | |
| 935 | const postbackRscStream = ReactServerDOMServer.renderToReadableStream( |
| 936 | <FormRef action={serverAction} />, |
| 937 | webpackMap, |
| 938 | ); |
| 939 | const postbackResponse = ReactServerDOMClient.createFromReadableStream( |
| 940 | postbackRscStream, |
| 941 | { |
| 942 | serverConsumerManifest: { |
| 943 | moduleMap: null, |
| 944 | moduleLoading: null, |
| 945 | }, |
| 946 | }, |
| 947 | ); |
| 948 | const postbackSsrStream = await ReactDOMServer.renderToReadableStream( |
| 949 | postbackResponse, |
| 950 | {formState: formState}, |
| 951 | ); |
| 952 | await readIntoContainer(postbackSsrStream); |
| 953 | } |
| 954 | |
| 955 | await submitTheForm(); |
| 956 | assertConsoleErrorDev([ |
| 957 | 'Failed to serialize an action for progressive enhancement:\n' + |
| 958 | 'Error: React Element cannot be passed to Server Functions from the Client without a temporary reference set. Pass a TemporaryReferenceSet to the options.\n' + |
| 959 | ' [<div/>]\n' + |
| 960 | ' ^^^^^^' + |
| 961 | '\n in <stack>', |
| 962 | ]); |
| 963 | |
| 964 | // The error message was returned as JSX. |
| 965 | const form2 = container.getElementsByTagName('form')[0]; |
| 966 | expect(form2.textContent).toBe('error message'); |
| 967 | expect(form2.firstChild.tagName).toBe('DIV'); |
| 968 | }); |
| 969 | |
| 970 | it('useActionState can return binary state during MPA form submission', async () => { |
| 971 | const serverAction = serverExports( |
| 972 | async function action(prevState, formData) { |
| 973 | return new Blob([new Uint8Array([104, 105])]); |
| 974 | }, |
| 975 | ); |
| 976 | |
| 977 | let blob; |
| 978 | |
| 979 | function Form({action}) { |
| 980 | const [errorMsg, dispatch] = useActionState(action, null); |
| 981 | let text; |
| 982 | if (errorMsg) { |
| 983 | blob = errorMsg; |
| 984 | text = React.use(blob.text()); |
| 985 | } |
| 986 | return <form action={dispatch}>{text}</form>; |
| 987 | } |
| 988 | |
| 989 | const FormRef = await clientExports(Form); |
| 990 | |
| 991 | const rscStream = ReactServerDOMServer.renderToReadableStream( |
| 992 | <FormRef action={serverAction} />, |
| 993 | webpackMap, |
| 994 | ); |
| 995 | const response = ReactServerDOMClient.createFromReadableStream(rscStream, { |
| 996 | serverConsumerManifest: { |
| 997 | moduleMap: null, |
| 998 | moduleLoading: null, |
| 999 | }, |
| 1000 | }); |
| 1001 | const ssrStream = await ReactDOMServer.renderToReadableStream(response); |
| 1002 | await readIntoContainer(ssrStream); |
| 1003 | |
| 1004 | const form1 = container.getElementsByTagName('form')[0]; |
| 1005 | expect(form1.textContent).toBe(''); |
| 1006 | |
| 1007 | async function submitTheForm() { |
| 1008 | const form = container.getElementsByTagName('form')[0]; |
| 1009 | const {formState} = await submit(form); |
| 1010 | |
| 1011 | // Simulate an MPA form submission by resetting the container and |
| 1012 | // rendering again. |
| 1013 | container.innerHTML = ''; |
| 1014 | |
| 1015 | const postbackRscStream = ReactServerDOMServer.renderToReadableStream( |
| 1016 | {formState, root: <FormRef action={serverAction} />}, |
| 1017 | webpackMap, |
| 1018 | ); |
| 1019 | const postbackResponse = |
| 1020 | await ReactServerDOMClient.createFromReadableStream(postbackRscStream, { |
| 1021 | serverConsumerManifest: { |
| 1022 | moduleMap: null, |
| 1023 | moduleLoading: null, |
| 1024 | }, |
| 1025 | }); |
| 1026 | const postbackSsrStream = await ReactDOMServer.renderToReadableStream( |
| 1027 | postbackResponse.root, |
| 1028 | {formState: postbackResponse.formState}, |
| 1029 | ); |
| 1030 | await readIntoContainer(postbackSsrStream); |
| 1031 | } |
| 1032 | |
| 1033 | await submitTheForm(); |
| 1034 | assertConsoleErrorDev([ |
| 1035 | 'Failed to serialize an action for progressive enhancement:\n' + |
| 1036 | 'Error: File/Blob fields are not yet supported in progressive forms. Will fallback to client hydration.' + |
| 1037 | '\n in <stack>', |
| 1038 | ]); |
| 1039 | |
| 1040 | expect(blob instanceof Blob).toBe(true); |
| 1041 | expect(blob.size).toBe(2); |
| 1042 | |
| 1043 | const form2 = container.getElementsByTagName('form')[0]; |
| 1044 | expect(form2.textContent).toBe('hi'); |
| 1045 | }); |
| 1046 | }); |