| 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 act; |
| 21 | let serverAct; |
| 22 | let container; |
| 23 | let React; |
| 24 | let ReactDOMServer; |
| 25 | let ReactDOMClient; |
| 26 | let Suspense; |
| 27 | let useFormStatus; |
| 28 | let useOptimistic; |
| 29 | let useActionState; |
| 30 | let assertConsoleErrorDev; |
| 31 | |
| 32 | describe('ReactDOMFizzForm', () => { |
| 33 | beforeEach(() => { |
| 34 | jest.resetModules(); |
| 35 | patchMessageChannel(); |
| 36 | React = require('react'); |
| 37 | ReactDOMServer = require('react-dom/server.browser'); |
| 38 | ReactDOMClient = require('react-dom/client'); |
| 39 | Suspense = React.Suspense; |
| 40 | useFormStatus = require('react-dom').useFormStatus; |
| 41 | useOptimistic = require('react').useOptimistic; |
| 42 | act = require('internal-test-utils').act; |
| 43 | serverAct = require('internal-test-utils').serverAct; |
| 44 | assertConsoleErrorDev = |
| 45 | require('internal-test-utils').assertConsoleErrorDev; |
| 46 | container = document.createElement('div'); |
| 47 | document.body.appendChild(container); |
| 48 | // TODO: Test the old api but it warns so needs warnings to be asserted. |
| 49 | // if (__VARIANT__) { |
| 50 | // Remove after API is deleted. |
| 51 | // useActionState = require('react-dom').useFormState; |
| 52 | // } |
| 53 | useActionState = require('react').useActionState; |
| 54 | }); |
| 55 | |
| 56 | afterEach(() => { |
| 57 | document.body.removeChild(container); |
| 58 | }); |
| 59 | |
| 60 | function submit(submitter) { |
| 61 | const form = submitter.form || submitter; |
| 62 | if (!submitter.form) { |
| 63 | submitter = undefined; |
| 64 | } |
| 65 | const submitEvent = new Event('submit', {bubbles: true, cancelable: true}); |
| 66 | submitEvent.submitter = submitter; |
| 67 | const returnValue = form.dispatchEvent(submitEvent); |
| 68 | if (!returnValue) { |
| 69 | return; |
| 70 | } |
| 71 | const action = |
| 72 | (submitter && submitter.getAttribute('formaction')) || form.action; |
| 73 | if (!/\s*javascript:/i.test(action)) { |
| 74 | throw new Error('Navigate to: ' + action); |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | async function readIntoContainer(stream) { |
| 79 | const reader = stream.getReader(); |
| 80 | let result = ''; |
| 81 | while (true) { |
| 82 | const {done, value} = await reader.read(); |
| 83 | if (done) { |
| 84 | break; |
| 85 | } |
| 86 | result += Buffer.from(value).toString('utf8'); |
| 87 | } |
| 88 | const temp = document.createElement('div'); |
| 89 | temp.innerHTML = result; |
| 90 | insertNodesAndExecuteScripts(temp, container, null); |
| 91 | } |
| 92 | |
| 93 | it('should allow passing a function to form action during SSR', async () => { |
| 94 | const ref = React.createRef(); |
| 95 | let foo; |
| 96 | |
| 97 | function action(formData) { |
| 98 | foo = formData.get('foo'); |
| 99 | } |
| 100 | function App() { |
| 101 | return ( |
| 102 | <form action={action} ref={ref}> |
| 103 | <input type="text" name="foo" defaultValue="bar" /> |
| 104 | </form> |
| 105 | ); |
| 106 | } |
| 107 | |
| 108 | const stream = await serverAct(() => |
| 109 | ReactDOMServer.renderToReadableStream(<App />), |
| 110 | ); |
| 111 | await readIntoContainer(stream); |
| 112 | await act(async () => { |
| 113 | ReactDOMClient.hydrateRoot(container, <App />); |
| 114 | }); |
| 115 | |
| 116 | submit(ref.current); |
| 117 | |
| 118 | expect(foo).toBe('bar'); |
| 119 | }); |
| 120 | |
| 121 | it('should allow passing a function to an input/button formAction', async () => { |
| 122 | const inputRef = React.createRef(); |
| 123 | const buttonRef = React.createRef(); |
| 124 | let rootActionCalled = false; |
| 125 | let savedTitle = null; |
| 126 | let deletedTitle = null; |
| 127 | |
| 128 | function action(formData) { |
| 129 | rootActionCalled = true; |
| 130 | } |
| 131 | |
| 132 | function saveItem(formData) { |
| 133 | savedTitle = formData.get('title'); |
| 134 | } |
| 135 | |
| 136 | function deleteItem(formData) { |
| 137 | deletedTitle = formData.get('title'); |
| 138 | } |
| 139 | |
| 140 | function App() { |
| 141 | return ( |
| 142 | <form action={action}> |
| 143 | <input type="text" name="title" defaultValue="Hello" /> |
| 144 | <input |
| 145 | type="submit" |
| 146 | formAction={saveItem} |
| 147 | value="Save" |
| 148 | ref={inputRef} |
| 149 | /> |
| 150 | <button formAction={deleteItem} ref={buttonRef}> |
| 151 | Delete |
| 152 | </button> |
| 153 | </form> |
| 154 | ); |
| 155 | } |
| 156 | |
| 157 | const stream = await serverAct(() => |
| 158 | ReactDOMServer.renderToReadableStream(<App />), |
| 159 | ); |
| 160 | await readIntoContainer(stream); |
| 161 | await act(async () => { |
| 162 | ReactDOMClient.hydrateRoot(container, <App />); |
| 163 | }); |
| 164 | |
| 165 | expect(savedTitle).toBe(null); |
| 166 | expect(deletedTitle).toBe(null); |
| 167 | |
| 168 | submit(inputRef.current); |
| 169 | expect(savedTitle).toBe('Hello'); |
| 170 | expect(deletedTitle).toBe(null); |
| 171 | savedTitle = null; |
| 172 | |
| 173 | submit(buttonRef.current); |
| 174 | expect(savedTitle).toBe(null); |
| 175 | expect(deletedTitle).toBe('Hello'); |
| 176 | deletedTitle = null; |
| 177 | |
| 178 | expect(rootActionCalled).toBe(false); |
| 179 | }); |
| 180 | |
| 181 | it('should warn when passing a function action during SSR and string during hydration', async () => { |
| 182 | function action(formData) {} |
| 183 | function App({isClient}) { |
| 184 | return ( |
| 185 | <form action={isClient ? 'action' : action}> |
| 186 | <input type="text" name="foo" defaultValue="bar" /> |
| 187 | </form> |
| 188 | ); |
| 189 | } |
| 190 | |
| 191 | const stream = await serverAct(() => |
| 192 | ReactDOMServer.renderToReadableStream(<App />), |
| 193 | ); |
| 194 | await readIntoContainer(stream); |
| 195 | await act(async () => { |
| 196 | ReactDOMClient.hydrateRoot(container, <App isClient={true} />); |
| 197 | }); |
| 198 | assertConsoleErrorDev([ |
| 199 | "A tree hydrated but some attributes of the server rendered HTML didn't match the client properties. " + |
| 200 | "This won't be patched up. This can happen if a SSR-ed Client Component used:\n\n" + |
| 201 | "- A server/client branch `if (typeof window !== 'undefined')`.\n" + |
| 202 | "- Variable input such as `Date.now()` or `Math.random()` which changes each time it's called.\n" + |
| 203 | "- Date formatting in a user's locale which doesn't match the server.\n" + |
| 204 | '- External changing data without sending a snapshot of it along with the HTML.\n' + |
| 205 | '- Invalid HTML tag nesting.\n\n' + |
| 206 | 'It can also happen if the client has a browser extension installed which messes with the HTML before React loaded.\n\n' + |
| 207 | 'https://react.dev/link/hydration-mismatch\n\n' + |
| 208 | ' <App isClient={true}>\n' + |
| 209 | ' <form\n' + |
| 210 | '+ action="action"\n' + |
| 211 | '- action="function"\n' + |
| 212 | ' >\n' + |
| 213 | '\n in form (at **)' + |
| 214 | '\n in App (at **)', |
| 215 | ]); |
| 216 | }); |
| 217 | |
| 218 | it('should ideally warn when passing a string during SSR and function during hydration', async () => { |
| 219 | function action(formData) {} |
| 220 | function App({isClient}) { |
| 221 | return ( |
| 222 | <form action={isClient ? action : 'action'}> |
| 223 | <input type="text" name="foo" defaultValue="bar" /> |
| 224 | </form> |
| 225 | ); |
| 226 | } |
| 227 | |
| 228 | const stream = await serverAct(() => |
| 229 | ReactDOMServer.renderToReadableStream(<App />), |
| 230 | ); |
| 231 | await readIntoContainer(stream); |
| 232 | // This should ideally warn because only the client provides a function that doesn't line up. |
| 233 | await act(async () => { |
| 234 | ReactDOMClient.hydrateRoot(container, <App isClient={true} />); |
| 235 | }); |
| 236 | }); |
| 237 | |
| 238 | it('should reset form fields after you update away from hydrated function', async () => { |
| 239 | const formRef = React.createRef(); |
| 240 | const inputRef = React.createRef(); |
| 241 | const buttonRef = React.createRef(); |
| 242 | function action(formData) {} |
| 243 | function App({isUpdate}) { |
| 244 | return ( |
| 245 | <form |
| 246 | action={isUpdate ? 'action' : action} |
| 247 | ref={formRef} |
| 248 | method={isUpdate ? 'POST' : null}> |
| 249 | <input |
| 250 | type="submit" |
| 251 | formAction={isUpdate ? 'action' : action} |
| 252 | ref={inputRef} |
| 253 | formTarget={isUpdate ? 'elsewhere' : null} |
| 254 | /> |
| 255 | <button |
| 256 | formAction={isUpdate ? 'action' : action} |
| 257 | ref={buttonRef} |
| 258 | formEncType={isUpdate ? 'multipart/form-data' : null} |
| 259 | /> |
| 260 | </form> |
| 261 | ); |
| 262 | } |
| 263 | |
| 264 | const stream = await serverAct(() => |
| 265 | ReactDOMServer.renderToReadableStream(<App />), |
| 266 | ); |
| 267 | await readIntoContainer(stream); |
| 268 | let root; |
| 269 | await act(async () => { |
| 270 | root = ReactDOMClient.hydrateRoot(container, <App />); |
| 271 | }); |
| 272 | await act(async () => { |
| 273 | root.render(<App isUpdate={true} />); |
| 274 | }); |
| 275 | expect(formRef.current.getAttribute('action')).toBe('action'); |
| 276 | expect(formRef.current.hasAttribute('encType')).toBe(false); |
| 277 | expect(formRef.current.getAttribute('method')).toBe('POST'); |
| 278 | expect(formRef.current.hasAttribute('target')).toBe(false); |
| 279 | |
| 280 | expect(inputRef.current.getAttribute('formAction')).toBe('action'); |
| 281 | expect(inputRef.current.hasAttribute('name')).toBe(false); |
| 282 | expect(inputRef.current.hasAttribute('formEncType')).toBe(false); |
| 283 | expect(inputRef.current.hasAttribute('formMethod')).toBe(false); |
| 284 | expect(inputRef.current.getAttribute('formTarget')).toBe('elsewhere'); |
| 285 | |
| 286 | expect(buttonRef.current.getAttribute('formAction')).toBe('action'); |
| 287 | expect(buttonRef.current.hasAttribute('name')).toBe(false); |
| 288 | expect(buttonRef.current.getAttribute('formEncType')).toBe( |
| 289 | 'multipart/form-data', |
| 290 | ); |
| 291 | expect(buttonRef.current.hasAttribute('formMethod')).toBe(false); |
| 292 | expect(buttonRef.current.hasAttribute('formTarget')).toBe(false); |
| 293 | }); |
| 294 | |
| 295 | it('should reset form fields after you remove a hydrated function', async () => { |
| 296 | const formRef = React.createRef(); |
| 297 | const inputRef = React.createRef(); |
| 298 | const buttonRef = React.createRef(); |
| 299 | function action(formData) {} |
| 300 | function App({isUpdate}) { |
| 301 | return ( |
| 302 | <form action={isUpdate ? undefined : action} ref={formRef}> |
| 303 | <input |
| 304 | type="submit" |
| 305 | formAction={isUpdate ? undefined : action} |
| 306 | ref={inputRef} |
| 307 | /> |
| 308 | <button formAction={isUpdate ? undefined : action} ref={buttonRef} /> |
| 309 | </form> |
| 310 | ); |
| 311 | } |
| 312 | |
| 313 | const stream = await serverAct(() => |
| 314 | ReactDOMServer.renderToReadableStream(<App />), |
| 315 | ); |
| 316 | await readIntoContainer(stream); |
| 317 | let root; |
| 318 | await act(async () => { |
| 319 | root = ReactDOMClient.hydrateRoot(container, <App />); |
| 320 | }); |
| 321 | await act(async () => { |
| 322 | root.render(<App isUpdate={true} />); |
| 323 | }); |
| 324 | expect(formRef.current.hasAttribute('action')).toBe(false); |
| 325 | expect(formRef.current.hasAttribute('encType')).toBe(false); |
| 326 | expect(formRef.current.hasAttribute('method')).toBe(false); |
| 327 | expect(formRef.current.hasAttribute('target')).toBe(false); |
| 328 | |
| 329 | expect(inputRef.current.hasAttribute('formAction')).toBe(false); |
| 330 | expect(inputRef.current.hasAttribute('name')).toBe(false); |
| 331 | expect(inputRef.current.hasAttribute('formEncType')).toBe(false); |
| 332 | expect(inputRef.current.hasAttribute('formMethod')).toBe(false); |
| 333 | expect(inputRef.current.hasAttribute('formTarget')).toBe(false); |
| 334 | |
| 335 | expect(buttonRef.current.hasAttribute('formAction')).toBe(false); |
| 336 | expect(buttonRef.current.hasAttribute('name')).toBe(false); |
| 337 | expect(buttonRef.current.hasAttribute('formEncType')).toBe(false); |
| 338 | expect(buttonRef.current.hasAttribute('formMethod')).toBe(false); |
| 339 | expect(buttonRef.current.hasAttribute('formTarget')).toBe(false); |
| 340 | }); |
| 341 | |
| 342 | it('should restore the form fields even if they were incorrectly set', async () => { |
| 343 | const formRef = React.createRef(); |
| 344 | const inputRef = React.createRef(); |
| 345 | const buttonRef = React.createRef(); |
| 346 | function action(formData) {} |
| 347 | function App({isUpdate}) { |
| 348 | return ( |
| 349 | <form |
| 350 | action={isUpdate ? 'action' : action} |
| 351 | ref={formRef} |
| 352 | method="DELETE"> |
| 353 | <input |
| 354 | type="submit" |
| 355 | formAction={isUpdate ? 'action' : action} |
| 356 | ref={inputRef} |
| 357 | formTarget="elsewhere" |
| 358 | /> |
| 359 | <button |
| 360 | formAction={isUpdate ? 'action' : action} |
| 361 | ref={buttonRef} |
| 362 | formEncType="text/plain" |
| 363 | /> |
| 364 | </form> |
| 365 | ); |
| 366 | } |
| 367 | |
| 368 | // Specifying the extra form fields are a DEV error, but we expect it |
| 369 | // to eventually still be patched up after an update. |
| 370 | const stream = await serverAct(() => |
| 371 | ReactDOMServer.renderToReadableStream(<App />), |
| 372 | ); |
| 373 | await readIntoContainer(stream); |
| 374 | assertConsoleErrorDev([ |
| 375 | 'Cannot specify a encType or method for a form that specifies a function as the action. ' + |
| 376 | 'React provides those automatically. They will get overridden.\n' + |
| 377 | ' in form (at **)\n' + |
| 378 | ' in App (at **)', |
| 379 | 'Cannot specify a formTarget for a button that specifies a function as a formAction. ' + |
| 380 | 'The function will always be executed in the same window.\n' + |
| 381 | ' in input (at **)\n' + |
| 382 | ' in App (at **)', |
| 383 | ]); |
| 384 | let root; |
| 385 | await act(async () => { |
| 386 | root = ReactDOMClient.hydrateRoot(container, <App />); |
| 387 | }); |
| 388 | assertConsoleErrorDev([ |
| 389 | "A tree hydrated but some attributes of the server rendered HTML didn't match the client properties. " + |
| 390 | "This won't be patched up. This can happen if a SSR-ed Client Component used:\n\n" + |
| 391 | "- A server/client branch `if (typeof window !== 'undefined')`.\n" + |
| 392 | "- Variable input such as `Date.now()` or `Math.random()` which changes each time it's called.\n" + |
| 393 | "- Date formatting in a user's locale which doesn't match the server.\n" + |
| 394 | '- External changing data without sending a snapshot of it along with the HTML.\n' + |
| 395 | '- Invalid HTML tag nesting.\n\n' + |
| 396 | 'It can also happen if the client has a browser extension installed which messes with the HTML before React loaded.\n\n' + |
| 397 | 'https://react.dev/link/hydration-mismatch\n\n' + |
| 398 | ' <App>\n' + |
| 399 | ' <form\n' + |
| 400 | ' action={function action}\n' + |
| 401 | ' ref={{current:null}}\n' + |
| 402 | '+ method="DELETE"\n' + |
| 403 | '- method={null}\n' + |
| 404 | ' >\n' + |
| 405 | ' <input\n' + |
| 406 | ' type="submit"\n' + |
| 407 | ' formAction={function action}\n' + |
| 408 | ' ref={{current:null}}\n' + |
| 409 | '+ formTarget="elsewhere"\n' + |
| 410 | '- formTarget={null}\n' + |
| 411 | ' >\n' + |
| 412 | ' <button\n' + |
| 413 | ' formAction={function action}\n' + |
| 414 | ' ref={{current:null}}\n' + |
| 415 | '+ formEncType="text/plain"\n' + |
| 416 | '- formEncType={null}\n' + |
| 417 | ' >\n' + |
| 418 | '\n in input (at **)' + |
| 419 | '\n in App (at **)', |
| 420 | ]); |
| 421 | await act(async () => { |
| 422 | root.render(<App isUpdate={true} />); |
| 423 | }); |
| 424 | expect(formRef.current.getAttribute('action')).toBe('action'); |
| 425 | expect(formRef.current.hasAttribute('encType')).toBe(false); |
| 426 | expect(formRef.current.getAttribute('method')).toBe('DELETE'); |
| 427 | expect(formRef.current.hasAttribute('target')).toBe(false); |
| 428 | |
| 429 | expect(inputRef.current.getAttribute('formAction')).toBe('action'); |
| 430 | expect(inputRef.current.hasAttribute('name')).toBe(false); |
| 431 | expect(inputRef.current.hasAttribute('formEncType')).toBe(false); |
| 432 | expect(inputRef.current.hasAttribute('formMethod')).toBe(false); |
| 433 | expect(inputRef.current.getAttribute('formTarget')).toBe('elsewhere'); |
| 434 | |
| 435 | expect(buttonRef.current.getAttribute('formAction')).toBe('action'); |
| 436 | expect(buttonRef.current.hasAttribute('name')).toBe(false); |
| 437 | expect(buttonRef.current.getAttribute('formEncType')).toBe('text/plain'); |
| 438 | expect(buttonRef.current.hasAttribute('formMethod')).toBe(false); |
| 439 | expect(buttonRef.current.hasAttribute('formTarget')).toBe(false); |
| 440 | }); |
| 441 | |
| 442 | it('useFormStatus is not pending during server render', async () => { |
| 443 | function App() { |
| 444 | const {pending} = useFormStatus(); |
| 445 | return 'Pending: ' + pending; |
| 446 | } |
| 447 | |
| 448 | const stream = await serverAct(() => |
| 449 | ReactDOMServer.renderToReadableStream(<App />), |
| 450 | ); |
| 451 | await readIntoContainer(stream); |
| 452 | expect(container.textContent).toBe('Pending: false'); |
| 453 | |
| 454 | await act(() => ReactDOMClient.hydrateRoot(container, <App />)); |
| 455 | expect(container.textContent).toBe('Pending: false'); |
| 456 | }); |
| 457 | |
| 458 | it('should replay a form action after hydration', async () => { |
| 459 | let foo; |
| 460 | function action(formData) { |
| 461 | foo = formData.get('foo'); |
| 462 | } |
| 463 | function App() { |
| 464 | return ( |
| 465 | <form action={action}> |
| 466 | <input type="text" name="foo" defaultValue="bar" /> |
| 467 | </form> |
| 468 | ); |
| 469 | } |
| 470 | |
| 471 | const stream = await serverAct(() => |
| 472 | ReactDOMServer.renderToReadableStream(<App />), |
| 473 | ); |
| 474 | await readIntoContainer(stream); |
| 475 | |
| 476 | // Dispatch an event before hydration |
| 477 | submit(container.getElementsByTagName('form')[0]); |
| 478 | |
| 479 | await act(async () => { |
| 480 | ReactDOMClient.hydrateRoot(container, <App />); |
| 481 | }); |
| 482 | |
| 483 | // It should've now been replayed |
| 484 | expect(foo).toBe('bar'); |
| 485 | }); |
| 486 | |
| 487 | it('should replay input/button formAction', async () => { |
| 488 | let rootActionCalled = false; |
| 489 | let savedTitle = null; |
| 490 | let deletedTitle = null; |
| 491 | |
| 492 | function action(formData) { |
| 493 | rootActionCalled = true; |
| 494 | } |
| 495 | |
| 496 | function saveItem(formData) { |
| 497 | savedTitle = formData.get('title'); |
| 498 | } |
| 499 | |
| 500 | function deleteItem(formData) { |
| 501 | deletedTitle = formData.get('title'); |
| 502 | } |
| 503 | |
| 504 | function App() { |
| 505 | return ( |
| 506 | <form action={action}> |
| 507 | <input type="text" name="title" defaultValue="Hello" /> |
| 508 | <input type="submit" formAction={saveItem} value="Save" /> |
| 509 | <button formAction={deleteItem}>Delete</button> |
| 510 | </form> |
| 511 | ); |
| 512 | } |
| 513 | |
| 514 | const stream = await serverAct(() => |
| 515 | ReactDOMServer.renderToReadableStream(<App />), |
| 516 | ); |
| 517 | await readIntoContainer(stream); |
| 518 | |
| 519 | submit(container.getElementsByTagName('input')[1]); |
| 520 | submit(container.getElementsByTagName('button')[0]); |
| 521 | |
| 522 | await act(async () => { |
| 523 | ReactDOMClient.hydrateRoot(container, <App />); |
| 524 | }); |
| 525 | |
| 526 | expect(savedTitle).toBe('Hello'); |
| 527 | expect(deletedTitle).toBe('Hello'); |
| 528 | expect(rootActionCalled).toBe(false); |
| 529 | }); |
| 530 | |
| 531 | it('useOptimistic returns passthrough value', async () => { |
| 532 | function App() { |
| 533 | const [optimisticState] = useOptimistic('hi'); |
| 534 | return optimisticState; |
| 535 | } |
| 536 | |
| 537 | const stream = await serverAct(() => |
| 538 | ReactDOMServer.renderToReadableStream(<App />), |
| 539 | ); |
| 540 | await readIntoContainer(stream); |
| 541 | expect(container.textContent).toBe('hi'); |
| 542 | |
| 543 | await act(async () => { |
| 544 | ReactDOMClient.hydrateRoot(container, <App />); |
| 545 | }); |
| 546 | expect(container.textContent).toBe('hi'); |
| 547 | }); |
| 548 | |
| 549 | it('useActionState returns initial state', async () => { |
| 550 | async function action(state) { |
| 551 | return state; |
| 552 | } |
| 553 | |
| 554 | function App() { |
| 555 | const [state] = useActionState(action, 0); |
| 556 | return state; |
| 557 | } |
| 558 | |
| 559 | const stream = await serverAct(() => |
| 560 | ReactDOMServer.renderToReadableStream(<App />), |
| 561 | ); |
| 562 | await readIntoContainer(stream); |
| 563 | expect(container.textContent).toBe('0'); |
| 564 | |
| 565 | await act(async () => { |
| 566 | ReactDOMClient.hydrateRoot(container, <App />); |
| 567 | }); |
| 568 | expect(container.textContent).toBe('0'); |
| 569 | }); |
| 570 | |
| 571 | it('can provide a custom action on the server for actions', async () => { |
| 572 | const ref = React.createRef(); |
| 573 | let foo; |
| 574 | |
| 575 | function action(formData) { |
| 576 | foo = formData.get('foo'); |
| 577 | } |
| 578 | action.$$FORM_ACTION = function (identifierPrefix) { |
| 579 | const extraFields = new FormData(); |
| 580 | extraFields.append(identifierPrefix + 'hello', 'world'); |
| 581 | return { |
| 582 | action: this.name, |
| 583 | name: identifierPrefix, |
| 584 | method: 'POST', |
| 585 | encType: 'multipart/form-data', |
| 586 | target: 'self', |
| 587 | data: extraFields, |
| 588 | }; |
| 589 | }; |
| 590 | function App() { |
| 591 | return ( |
| 592 | <form action={action} ref={ref} method={null}> |
| 593 | <Suspense /> |
| 594 | <input type="text" name="foo" defaultValue="bar" /> |
| 595 | </form> |
| 596 | ); |
| 597 | } |
| 598 | |
| 599 | const stream = await serverAct(() => |
| 600 | ReactDOMServer.renderToReadableStream(<App />), |
| 601 | ); |
| 602 | await readIntoContainer(stream); |
| 603 | |
| 604 | const form = container.firstChild; |
| 605 | expect(form.getAttribute('action')).toBe('action'); |
| 606 | expect(form.getAttribute('method')).toBe('POST'); |
| 607 | expect(form.getAttribute('enctype')).toBe('multipart/form-data'); |
| 608 | expect(form.getAttribute('target')).toBe('self'); |
| 609 | const formActionName = form.firstChild.getAttribute('name'); |
| 610 | expect( |
| 611 | container |
| 612 | .querySelector('input[name="' + formActionName + 'hello"]') |
| 613 | .getAttribute('value'), |
| 614 | ).toBe('world'); |
| 615 | |
| 616 | await act(async () => { |
| 617 | ReactDOMClient.hydrateRoot(container, <App />); |
| 618 | }); |
| 619 | |
| 620 | submit(ref.current); |
| 621 | |
| 622 | expect(foo).toBe('bar'); |
| 623 | }); |
| 624 | |
| 625 | it('can provide a custom action on buttons the server for actions', async () => { |
| 626 | const hiddenRef = React.createRef(); |
| 627 | const inputRef = React.createRef(); |
| 628 | const buttonRef = React.createRef(); |
| 629 | let foo; |
| 630 | |
| 631 | function action(formData) { |
| 632 | foo = formData.get('foo'); |
| 633 | } |
| 634 | action.$$FORM_ACTION = function (identifierPrefix) { |
| 635 | const extraFields = new FormData(); |
| 636 | extraFields.append(identifierPrefix + 'hello', 'world'); |
| 637 | return { |
| 638 | action: this.name, |
| 639 | name: identifierPrefix, |
| 640 | method: 'POST', |
| 641 | encType: 'multipart/form-data', |
| 642 | target: 'self', |
| 643 | data: extraFields, |
| 644 | }; |
| 645 | }; |
| 646 | function App() { |
| 647 | return ( |
| 648 | <form> |
| 649 | <input type="hidden" name="foo" value="bar" ref={hiddenRef} /> |
| 650 | <input |
| 651 | type="submit" |
| 652 | formAction={action} |
| 653 | method={null} |
| 654 | ref={inputRef} |
| 655 | /> |
| 656 | <button formAction={action} ref={buttonRef} target={null} /> |
| 657 | </form> |
| 658 | ); |
| 659 | } |
| 660 | |
| 661 | const stream = await serverAct(() => |
| 662 | ReactDOMServer.renderToReadableStream(<App />), |
| 663 | ); |
| 664 | await readIntoContainer(stream); |
| 665 | |
| 666 | const input = container.getElementsByTagName('input')[1]; |
| 667 | const button = container.getElementsByTagName('button')[0]; |
| 668 | expect(input.getAttribute('formaction')).toBe('action'); |
| 669 | expect(input.getAttribute('formmethod')).toBe('POST'); |
| 670 | expect(input.getAttribute('formenctype')).toBe('multipart/form-data'); |
| 671 | expect(input.getAttribute('formtarget')).toBe('self'); |
| 672 | expect(button.getAttribute('formaction')).toBe('action'); |
| 673 | expect(button.getAttribute('formmethod')).toBe('POST'); |
| 674 | expect(button.getAttribute('formenctype')).toBe('multipart/form-data'); |
| 675 | expect(button.getAttribute('formtarget')).toBe('self'); |
| 676 | const inputName = input.getAttribute('name'); |
| 677 | const buttonName = button.getAttribute('name'); |
| 678 | expect( |
| 679 | container |
| 680 | .querySelector('input[name="' + inputName + 'hello"]') |
| 681 | .getAttribute('value'), |
| 682 | ).toBe('world'); |
| 683 | expect( |
| 684 | container |
| 685 | .querySelector('input[name="' + buttonName + 'hello"]') |
| 686 | .getAttribute('value'), |
| 687 | ).toBe('world'); |
| 688 | |
| 689 | await act(async () => { |
| 690 | ReactDOMClient.hydrateRoot(container, <App />); |
| 691 | }); |
| 692 | |
| 693 | expect(hiddenRef.current.name).toBe('foo'); |
| 694 | |
| 695 | submit(inputRef.current); |
| 696 | |
| 697 | expect(foo).toBe('bar'); |
| 698 | |
| 699 | foo = null; |
| 700 | |
| 701 | submit(buttonRef.current); |
| 702 | |
| 703 | expect(foo).toBe('bar'); |
| 704 | }); |
| 705 | |
| 706 | it('can hydrate hidden fields in the beginning of a form', async () => { |
| 707 | const hiddenRef = React.createRef(); |
| 708 | |
| 709 | let invoked = false; |
| 710 | function action(formData) { |
| 711 | invoked = true; |
| 712 | } |
| 713 | action.$$FORM_ACTION = function (identifierPrefix) { |
| 714 | const extraFields = new FormData(); |
| 715 | extraFields.append(identifierPrefix + 'hello', 'world'); |
| 716 | return { |
| 717 | action: '', |
| 718 | name: identifierPrefix, |
| 719 | method: 'POST', |
| 720 | encType: 'multipart/form-data', |
| 721 | data: extraFields, |
| 722 | }; |
| 723 | }; |
| 724 | function App() { |
| 725 | return ( |
| 726 | <form action={action}> |
| 727 | <input type="hidden" name="bar" defaultValue="baz" ref={hiddenRef} /> |
| 728 | <input type="text" name="foo" defaultValue="bar" /> |
| 729 | </form> |
| 730 | ); |
| 731 | } |
| 732 | |
| 733 | const stream = await serverAct(() => |
| 734 | ReactDOMServer.renderToReadableStream(<App />), |
| 735 | ); |
| 736 | await readIntoContainer(stream); |
| 737 | |
| 738 | const barField = container.querySelector('[name=bar]'); |
| 739 | |
| 740 | await act(async () => { |
| 741 | ReactDOMClient.hydrateRoot(container, <App />); |
| 742 | }); |
| 743 | |
| 744 | expect(hiddenRef.current).toBe(barField); |
| 745 | |
| 746 | expect(hiddenRef.current.name).toBe('bar'); |
| 747 | expect(hiddenRef.current.value).toBe('baz'); |
| 748 | |
| 749 | expect(container.querySelectorAll('[name=bar]').length).toBe(1); |
| 750 | |
| 751 | submit(hiddenRef.current.form); |
| 752 | |
| 753 | expect(invoked).toBe(true); |
| 754 | }); |
| 755 | }); |