| 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 | function emptyFunction() {} |
| 13 | |
| 14 | describe('ReactDOMTextarea', () => { |
| 15 | let React; |
| 16 | let ReactDOMClient; |
| 17 | let ReactDOMServer; |
| 18 | let act; |
| 19 | let assertConsoleErrorDev; |
| 20 | |
| 21 | let renderTextarea; |
| 22 | |
| 23 | const ReactFeatureFlags = require('shared/ReactFeatureFlags'); |
| 24 | |
| 25 | beforeEach(() => { |
| 26 | jest.resetModules(); |
| 27 | |
| 28 | React = require('react'); |
| 29 | ReactDOMClient = require('react-dom/client'); |
| 30 | ReactDOMServer = require('react-dom/server'); |
| 31 | act = require('internal-test-utils').act; |
| 32 | assertConsoleErrorDev = |
| 33 | require('internal-test-utils').assertConsoleErrorDev; |
| 34 | |
| 35 | renderTextarea = async function (component, container, root) { |
| 36 | await act(() => { |
| 37 | root.render(component); |
| 38 | }); |
| 39 | |
| 40 | const node = container.firstChild; |
| 41 | |
| 42 | // Fixing jsdom's quirky behavior -- in reality, the parser should strip |
| 43 | // off the leading newline but we need to do it by hand here. |
| 44 | node.defaultValue = node.innerHTML.replace(/^\n/, ''); |
| 45 | return node; |
| 46 | }; |
| 47 | }); |
| 48 | |
| 49 | afterEach(() => { |
| 50 | jest.restoreAllMocks(); |
| 51 | }); |
| 52 | |
| 53 | it('should allow setting `defaultValue`', async () => { |
| 54 | const container = document.createElement('div'); |
| 55 | const root = ReactDOMClient.createRoot(container); |
| 56 | const node = await renderTextarea( |
| 57 | <textarea defaultValue="giraffe" />, |
| 58 | container, |
| 59 | root, |
| 60 | ); |
| 61 | |
| 62 | expect(node.value).toBe('giraffe'); |
| 63 | |
| 64 | // Changing `defaultValue` should do nothing. |
| 65 | await renderTextarea(<textarea defaultValue="gorilla" />, container, root); |
| 66 | expect(node.value).toEqual('giraffe'); |
| 67 | |
| 68 | node.value = 'cat'; |
| 69 | |
| 70 | await renderTextarea(<textarea defaultValue="monkey" />, container, root); |
| 71 | expect(node.value).toEqual('cat'); |
| 72 | }); |
| 73 | |
| 74 | it('should display `defaultValue` of number 0', async () => { |
| 75 | const container = document.createElement('div'); |
| 76 | const root = ReactDOMClient.createRoot(container); |
| 77 | const node = await renderTextarea( |
| 78 | <textarea defaultValue={0} />, |
| 79 | container, |
| 80 | root, |
| 81 | ); |
| 82 | |
| 83 | expect(node.value).toBe('0'); |
| 84 | }); |
| 85 | |
| 86 | it('should display `defaultValue` of bigint 0', async () => { |
| 87 | const container = document.createElement('div'); |
| 88 | const root = ReactDOMClient.createRoot(container); |
| 89 | const node = await renderTextarea( |
| 90 | <textarea defaultValue={0n} />, |
| 91 | container, |
| 92 | root, |
| 93 | ); |
| 94 | |
| 95 | expect(node.value).toBe('0'); |
| 96 | }); |
| 97 | |
| 98 | it('should display "false" for `defaultValue` of `false`', async () => { |
| 99 | const container = document.createElement('div'); |
| 100 | const root = ReactDOMClient.createRoot(container); |
| 101 | const node = await renderTextarea( |
| 102 | <textarea defaultValue={false} />, |
| 103 | container, |
| 104 | root, |
| 105 | ); |
| 106 | |
| 107 | expect(node.value).toBe('false'); |
| 108 | }); |
| 109 | |
| 110 | it('should display "foobar" for `defaultValue` of `objToString`', async () => { |
| 111 | const container = document.createElement('div'); |
| 112 | const root = ReactDOMClient.createRoot(container); |
| 113 | const objToString = { |
| 114 | toString: function () { |
| 115 | return 'foobar'; |
| 116 | }, |
| 117 | }; |
| 118 | const node = await renderTextarea( |
| 119 | <textarea defaultValue={objToString} />, |
| 120 | container, |
| 121 | root, |
| 122 | ); |
| 123 | |
| 124 | expect(node.value).toBe('foobar'); |
| 125 | }); |
| 126 | |
| 127 | it('should set defaultValue', async () => { |
| 128 | const container = document.createElement('div'); |
| 129 | const root = ReactDOMClient.createRoot(container); |
| 130 | await act(() => { |
| 131 | root.render(<textarea defaultValue="foo" />); |
| 132 | }); |
| 133 | await act(() => { |
| 134 | root.render(<textarea defaultValue="bar" />); |
| 135 | }); |
| 136 | await act(() => { |
| 137 | root.render(<textarea defaultValue="noise" />); |
| 138 | }); |
| 139 | |
| 140 | expect(container.firstChild.defaultValue).toBe('noise'); |
| 141 | }); |
| 142 | |
| 143 | it('should not render value as an attribute', async () => { |
| 144 | const container = document.createElement('div'); |
| 145 | const root = ReactDOMClient.createRoot(container); |
| 146 | const node = await renderTextarea( |
| 147 | <textarea value="giraffe" onChange={emptyFunction} />, |
| 148 | container, |
| 149 | root, |
| 150 | ); |
| 151 | |
| 152 | expect(node.getAttribute('value')).toBe(null); |
| 153 | }); |
| 154 | |
| 155 | it('should display `value` of number 0', async () => { |
| 156 | const container = document.createElement('div'); |
| 157 | const root = ReactDOMClient.createRoot(container); |
| 158 | const node = await renderTextarea( |
| 159 | <textarea value={0} onChange={emptyFunction} />, |
| 160 | container, |
| 161 | root, |
| 162 | ); |
| 163 | |
| 164 | expect(node.value).toBe('0'); |
| 165 | }); |
| 166 | |
| 167 | it('should update defaultValue to empty string', async () => { |
| 168 | const container = document.createElement('div'); |
| 169 | const root = ReactDOMClient.createRoot(container); |
| 170 | await act(() => { |
| 171 | root.render(<textarea defaultValue={'foo'} />); |
| 172 | }); |
| 173 | |
| 174 | await act(() => { |
| 175 | root.render(<textarea defaultValue={''} />); |
| 176 | }); |
| 177 | |
| 178 | expect(container.firstChild.defaultValue).toBe(''); |
| 179 | }); |
| 180 | |
| 181 | it('should allow setting `value` to `giraffe`', async () => { |
| 182 | const container = document.createElement('div'); |
| 183 | const root = ReactDOMClient.createRoot(container); |
| 184 | const node = await renderTextarea( |
| 185 | <textarea value="giraffe" onChange={emptyFunction} />, |
| 186 | container, |
| 187 | root, |
| 188 | ); |
| 189 | |
| 190 | expect(node.value).toBe('giraffe'); |
| 191 | |
| 192 | await act(() => { |
| 193 | root.render(<textarea value="gorilla" onChange={emptyFunction} />); |
| 194 | }); |
| 195 | |
| 196 | expect(node.value).toEqual('gorilla'); |
| 197 | }); |
| 198 | |
| 199 | it('will not initially assign an empty value (covers case where firefox throws a validation error when required attribute is set)', async () => { |
| 200 | const container = document.createElement('div'); |
| 201 | |
| 202 | let counter = 0; |
| 203 | const originalCreateElement = document.createElement; |
| 204 | spyOnDevAndProd(document, 'createElement').mockImplementation( |
| 205 | function (type) { |
| 206 | const el = originalCreateElement.apply(this, arguments); |
| 207 | let value = ''; |
| 208 | if (type === 'textarea') { |
| 209 | Object.defineProperty(el, 'value', { |
| 210 | get: function () { |
| 211 | return value; |
| 212 | }, |
| 213 | set: function (val) { |
| 214 | value = String(val); |
| 215 | counter++; |
| 216 | }, |
| 217 | }); |
| 218 | } |
| 219 | return el; |
| 220 | }, |
| 221 | ); |
| 222 | |
| 223 | const root = ReactDOMClient.createRoot(container); |
| 224 | await act(() => { |
| 225 | root.render(<textarea value="" readOnly={true} />); |
| 226 | }); |
| 227 | |
| 228 | expect(counter).toEqual(0); |
| 229 | }); |
| 230 | |
| 231 | it('should render defaultValue for SSR', () => { |
| 232 | const markup = ReactDOMServer.renderToString(<textarea defaultValue="1" />); |
| 233 | const div = document.createElement('div'); |
| 234 | div.innerHTML = markup; |
| 235 | expect(div.firstChild.innerHTML).toBe('1'); |
| 236 | expect(div.firstChild.getAttribute('defaultValue')).toBe(null); |
| 237 | }); |
| 238 | |
| 239 | it('should render value for SSR', () => { |
| 240 | const element = <textarea value="1" onChange={function () {}} />; |
| 241 | const markup = ReactDOMServer.renderToString(element); |
| 242 | const div = document.createElement('div'); |
| 243 | div.innerHTML = markup; |
| 244 | expect(div.firstChild.innerHTML).toBe('1'); |
| 245 | expect(div.firstChild.getAttribute('defaultValue')).toBe(null); |
| 246 | }); |
| 247 | |
| 248 | it('should allow setting `value` to `true`', async () => { |
| 249 | const container = document.createElement('div'); |
| 250 | const root = ReactDOMClient.createRoot(container); |
| 251 | const node = await renderTextarea( |
| 252 | <textarea value="giraffe" onChange={emptyFunction} />, |
| 253 | container, |
| 254 | root, |
| 255 | ); |
| 256 | |
| 257 | expect(node.value).toBe('giraffe'); |
| 258 | |
| 259 | await act(() => { |
| 260 | root.render(<textarea value={true} onChange={emptyFunction} />); |
| 261 | }); |
| 262 | |
| 263 | expect(node.value).toEqual('true'); |
| 264 | }); |
| 265 | |
| 266 | it('should allow setting `value` to `false`', async () => { |
| 267 | const container = document.createElement('div'); |
| 268 | const root = ReactDOMClient.createRoot(container); |
| 269 | const node = await renderTextarea( |
| 270 | <textarea value="giraffe" onChange={emptyFunction} />, |
| 271 | container, |
| 272 | root, |
| 273 | ); |
| 274 | |
| 275 | expect(node.value).toBe('giraffe'); |
| 276 | |
| 277 | await act(() => { |
| 278 | root.render(<textarea value={false} onChange={emptyFunction} />); |
| 279 | }); |
| 280 | |
| 281 | expect(node.value).toEqual('false'); |
| 282 | }); |
| 283 | |
| 284 | it('should allow setting `value` to `objToString`', async () => { |
| 285 | const container = document.createElement('div'); |
| 286 | const root = ReactDOMClient.createRoot(container); |
| 287 | const node = await renderTextarea( |
| 288 | <textarea value="giraffe" onChange={emptyFunction} />, |
| 289 | container, |
| 290 | root, |
| 291 | ); |
| 292 | |
| 293 | expect(node.value).toBe('giraffe'); |
| 294 | |
| 295 | const objToString = { |
| 296 | toString: function () { |
| 297 | return 'foo'; |
| 298 | }, |
| 299 | }; |
| 300 | |
| 301 | await act(() => { |
| 302 | root.render(<textarea value={objToString} onChange={emptyFunction} />); |
| 303 | }); |
| 304 | |
| 305 | expect(node.value).toEqual('foo'); |
| 306 | }); |
| 307 | |
| 308 | it('should throw when value is set to a Temporal-like object', async () => { |
| 309 | class TemporalLike { |
| 310 | valueOf() { |
| 311 | // Throwing here is the behavior of ECMAScript "Temporal" date/time API. |
| 312 | // See https://tc39.es/proposal-temporal/docs/plaindate.html#valueOf |
| 313 | throw new TypeError('prod message'); |
| 314 | } |
| 315 | toString() { |
| 316 | return '2020-01-01'; |
| 317 | } |
| 318 | } |
| 319 | const container = document.createElement('div'); |
| 320 | const root = ReactDOMClient.createRoot(container); |
| 321 | const node = await renderTextarea( |
| 322 | <textarea value="giraffe" onChange={emptyFunction} />, |
| 323 | container, |
| 324 | root, |
| 325 | ); |
| 326 | |
| 327 | expect(node.value).toBe('giraffe'); |
| 328 | |
| 329 | const test = async () => { |
| 330 | await act(() => { |
| 331 | root.render( |
| 332 | <textarea value={new TemporalLike()} onChange={emptyFunction} />, |
| 333 | ); |
| 334 | }); |
| 335 | }; |
| 336 | await expect(test).rejects.toThrow(new TypeError('prod message')); |
| 337 | assertConsoleErrorDev([ |
| 338 | 'Form field values (value, checked, defaultValue, or defaultChecked props) must be ' + |
| 339 | 'strings, not TemporalLike. This value must be coerced to a string before using it here.\n' + |
| 340 | ' in textarea (at **', |
| 341 | ]); |
| 342 | }); |
| 343 | |
| 344 | it('should take updates to `defaultValue` for uncontrolled textarea', async () => { |
| 345 | const container = document.createElement('div'); |
| 346 | const root = ReactDOMClient.createRoot(container); |
| 347 | await act(() => { |
| 348 | root.render(<textarea defaultValue="0" />); |
| 349 | }); |
| 350 | |
| 351 | const node = container.firstChild; |
| 352 | |
| 353 | expect(node.value).toBe('0'); |
| 354 | |
| 355 | await act(() => { |
| 356 | root.render(<textarea defaultValue="1" />); |
| 357 | }); |
| 358 | |
| 359 | expect(node.value).toBe('0'); |
| 360 | }); |
| 361 | |
| 362 | it('should take updates to children in lieu of `defaultValue` for uncontrolled textarea', async () => { |
| 363 | const container = document.createElement('div'); |
| 364 | const root = ReactDOMClient.createRoot(container); |
| 365 | await act(() => { |
| 366 | root.render(<textarea defaultValue="0" />); |
| 367 | }); |
| 368 | |
| 369 | const node = container.firstChild; |
| 370 | |
| 371 | expect(node.value).toBe('0'); |
| 372 | |
| 373 | await act(() => { |
| 374 | root.render(<textarea>1</textarea>); |
| 375 | }); |
| 376 | |
| 377 | expect(node.value).toBe('0'); |
| 378 | }); |
| 379 | |
| 380 | it('should not incur unnecessary DOM mutations', async () => { |
| 381 | const container = document.createElement('div'); |
| 382 | const root = ReactDOMClient.createRoot(container); |
| 383 | await act(() => { |
| 384 | root.render(<textarea value="a" onChange={emptyFunction} />); |
| 385 | }); |
| 386 | |
| 387 | const node = container.firstChild; |
| 388 | let nodeValue = 'a'; |
| 389 | const nodeValueSetter = jest.fn(); |
| 390 | Object.defineProperty(node, 'value', { |
| 391 | get: function () { |
| 392 | return nodeValue; |
| 393 | }, |
| 394 | set: nodeValueSetter.mockImplementation(function (newValue) { |
| 395 | nodeValue = newValue; |
| 396 | }), |
| 397 | }); |
| 398 | |
| 399 | await act(() => { |
| 400 | root.render(<textarea value="a" onChange={emptyFunction} />); |
| 401 | }); |
| 402 | |
| 403 | expect(nodeValueSetter).toHaveBeenCalledTimes(0); |
| 404 | |
| 405 | await act(() => { |
| 406 | root.render(<textarea value="b" onChange={emptyFunction} />); |
| 407 | }); |
| 408 | |
| 409 | expect(nodeValueSetter).toHaveBeenCalledTimes(1); |
| 410 | }); |
| 411 | |
| 412 | it('should properly control a value of number `0`', async () => { |
| 413 | const setUntrackedValue = Object.getOwnPropertyDescriptor( |
| 414 | HTMLTextAreaElement.prototype, |
| 415 | 'value', |
| 416 | ).set; |
| 417 | |
| 418 | const container = document.createElement('div'); |
| 419 | const root = ReactDOMClient.createRoot(container); |
| 420 | document.body.appendChild(container); |
| 421 | |
| 422 | try { |
| 423 | const node = await renderTextarea( |
| 424 | <textarea value={0} onChange={emptyFunction} />, |
| 425 | container, |
| 426 | root, |
| 427 | ); |
| 428 | |
| 429 | setUntrackedValue.call(node, 'giraffe'); |
| 430 | node.dispatchEvent( |
| 431 | new Event('input', {bubbles: true, cancelable: false}), |
| 432 | ); |
| 433 | expect(node.value).toBe('0'); |
| 434 | } finally { |
| 435 | document.body.removeChild(container); |
| 436 | } |
| 437 | }); |
| 438 | |
| 439 | if (ReactFeatureFlags.disableTextareaChildren) { |
| 440 | it('should ignore children content', async () => { |
| 441 | const container = document.createElement('div'); |
| 442 | const root = ReactDOMClient.createRoot(container); |
| 443 | const node = await renderTextarea( |
| 444 | <textarea>giraffe</textarea>, |
| 445 | container, |
| 446 | root, |
| 447 | ); |
| 448 | assertConsoleErrorDev([ |
| 449 | 'Use the `defaultValue` or `value` props instead of setting children on <textarea>.\n' + |
| 450 | ' in textarea (at **)', |
| 451 | ]); |
| 452 | expect(node.value).toBe(''); |
| 453 | |
| 454 | await act(() => { |
| 455 | root.render(<textarea>gorilla</textarea>); |
| 456 | }); |
| 457 | |
| 458 | expect(node.value).toEqual(''); |
| 459 | }); |
| 460 | } |
| 461 | |
| 462 | if (ReactFeatureFlags.disableTextareaChildren) { |
| 463 | it('should receive defaultValue and still ignore children content', async () => { |
| 464 | const container = document.createElement('div'); |
| 465 | const root = ReactDOMClient.createRoot(container); |
| 466 | |
| 467 | const node = await renderTextarea( |
| 468 | <textarea defaultValue="dragon">monkey</textarea>, |
| 469 | container, |
| 470 | root, |
| 471 | ); |
| 472 | assertConsoleErrorDev([ |
| 473 | 'Use the `defaultValue` or `value` props instead of setting children on <textarea>.\n' + |
| 474 | ' in textarea (at **)', |
| 475 | ]); |
| 476 | expect(node.value).toBe('dragon'); |
| 477 | }); |
| 478 | } |
| 479 | |
| 480 | if (!ReactFeatureFlags.disableTextareaChildren) { |
| 481 | it('should treat children like `defaultValue`', async () => { |
| 482 | const container = document.createElement('div'); |
| 483 | const root = ReactDOMClient.createRoot(container); |
| 484 | |
| 485 | const node = await renderTextarea( |
| 486 | <textarea>giraffe</textarea>, |
| 487 | container, |
| 488 | root, |
| 489 | ); |
| 490 | assertConsoleErrorDev([ |
| 491 | 'Use the `defaultValue` or `value` props instead of setting children on <textarea>.\n' + |
| 492 | ' in textarea (at **)', |
| 493 | ]); |
| 494 | |
| 495 | expect(node.value).toBe('giraffe'); |
| 496 | |
| 497 | await act(() => { |
| 498 | root.render(<textarea>gorilla</textarea>); |
| 499 | }); |
| 500 | |
| 501 | expect(node.value).toEqual('giraffe'); |
| 502 | }); |
| 503 | } |
| 504 | |
| 505 | it('should keep value when switching to uncontrolled element if not changed', async () => { |
| 506 | const container = document.createElement('div'); |
| 507 | const root = ReactDOMClient.createRoot(container); |
| 508 | const node = await renderTextarea( |
| 509 | <textarea value="kitten" onChange={emptyFunction} />, |
| 510 | container, |
| 511 | root, |
| 512 | ); |
| 513 | |
| 514 | expect(node.value).toBe('kitten'); |
| 515 | |
| 516 | await act(() => { |
| 517 | root.render(<textarea defaultValue="gorilla" />); |
| 518 | }); |
| 519 | |
| 520 | expect(node.value).toEqual('kitten'); |
| 521 | }); |
| 522 | |
| 523 | it('should keep value when switching to uncontrolled element if changed', async () => { |
| 524 | const container = document.createElement('div'); |
| 525 | const root = ReactDOMClient.createRoot(container); |
| 526 | const node = await renderTextarea( |
| 527 | <textarea value="kitten" onChange={emptyFunction} />, |
| 528 | container, |
| 529 | root, |
| 530 | ); |
| 531 | |
| 532 | expect(node.value).toBe('kitten'); |
| 533 | |
| 534 | await act(() => { |
| 535 | root.render(<textarea value="puppies" onChange={emptyFunction} />); |
| 536 | }); |
| 537 | |
| 538 | expect(node.value).toBe('puppies'); |
| 539 | |
| 540 | await act(() => { |
| 541 | root.render(<textarea defaultValue="gorilla" />); |
| 542 | }); |
| 543 | |
| 544 | expect(node.value).toEqual('puppies'); |
| 545 | }); |
| 546 | |
| 547 | if (ReactFeatureFlags.disableTextareaChildren) { |
| 548 | it('should ignore numbers as children', async () => { |
| 549 | const container = document.createElement('div'); |
| 550 | const root = ReactDOMClient.createRoot(container); |
| 551 | const node = await renderTextarea( |
| 552 | <textarea>{17}</textarea>, |
| 553 | container, |
| 554 | root, |
| 555 | ); |
| 556 | assertConsoleErrorDev([ |
| 557 | 'Use the `defaultValue` or `value` props instead of setting children on <textarea>.\n' + |
| 558 | ' in textarea (at **)', |
| 559 | ]); |
| 560 | expect(node.value).toBe(''); |
| 561 | }); |
| 562 | } |
| 563 | |
| 564 | if (!ReactFeatureFlags.disableTextareaChildren) { |
| 565 | it('should allow numbers as children', async () => { |
| 566 | const container = document.createElement('div'); |
| 567 | const root = ReactDOMClient.createRoot(container); |
| 568 | const node = await renderTextarea( |
| 569 | <textarea>{17}</textarea>, |
| 570 | container, |
| 571 | root, |
| 572 | ); |
| 573 | assertConsoleErrorDev([ |
| 574 | 'Use the `defaultValue` or `value` props instead of setting children on <textarea>.\n' + |
| 575 | ' in textarea (at **)', |
| 576 | ]); |
| 577 | expect(node.value).toBe('17'); |
| 578 | }); |
| 579 | } |
| 580 | |
| 581 | if (ReactFeatureFlags.disableTextareaChildren) { |
| 582 | it('should ignore booleans as children', async () => { |
| 583 | const container = document.createElement('div'); |
| 584 | const root = ReactDOMClient.createRoot(container); |
| 585 | const node = await renderTextarea( |
| 586 | <textarea>{false}</textarea>, |
| 587 | container, |
| 588 | root, |
| 589 | ); |
| 590 | assertConsoleErrorDev([ |
| 591 | 'Use the `defaultValue` or `value` props instead of setting children on <textarea>.\n' + |
| 592 | ' in textarea (at **)', |
| 593 | ]); |
| 594 | expect(node.value).toBe(''); |
| 595 | }); |
| 596 | } |
| 597 | |
| 598 | if (!ReactFeatureFlags.disableTextareaChildren) { |
| 599 | it('should allow booleans as children', async () => { |
| 600 | const container = document.createElement('div'); |
| 601 | const root = ReactDOMClient.createRoot(container); |
| 602 | const node = await renderTextarea( |
| 603 | <textarea>{false}</textarea>, |
| 604 | container, |
| 605 | root, |
| 606 | ); |
| 607 | assertConsoleErrorDev([ |
| 608 | 'Use the `defaultValue` or `value` props instead of setting children on <textarea>.\n' + |
| 609 | ' in textarea (at **)', |
| 610 | ]); |
| 611 | expect(node.value).toBe('false'); |
| 612 | }); |
| 613 | } |
| 614 | |
| 615 | if (ReactFeatureFlags.disableTextareaChildren) { |
| 616 | it('should ignore objects as children', async () => { |
| 617 | const container = document.createElement('div'); |
| 618 | const root = ReactDOMClient.createRoot(container); |
| 619 | const obj = { |
| 620 | toString: function () { |
| 621 | return 'sharkswithlasers'; |
| 622 | }, |
| 623 | }; |
| 624 | const node = await renderTextarea( |
| 625 | <textarea>{obj}</textarea>, |
| 626 | container, |
| 627 | root, |
| 628 | ); |
| 629 | assertConsoleErrorDev([ |
| 630 | 'Use the `defaultValue` or `value` props instead of setting children on <textarea>.\n' + |
| 631 | ' in textarea (at **)', |
| 632 | ]); |
| 633 | expect(node.value).toBe(''); |
| 634 | }); |
| 635 | } |
| 636 | |
| 637 | if (!ReactFeatureFlags.disableTextareaChildren) { |
| 638 | it('should allow objects as children', async () => { |
| 639 | const container = document.createElement('div'); |
| 640 | const root = ReactDOMClient.createRoot(container); |
| 641 | const obj = { |
| 642 | toString: function () { |
| 643 | return 'sharkswithlasers'; |
| 644 | }, |
| 645 | }; |
| 646 | const node = await renderTextarea( |
| 647 | <textarea>{obj}</textarea>, |
| 648 | container, |
| 649 | root, |
| 650 | ); |
| 651 | assertConsoleErrorDev([ |
| 652 | 'Use the `defaultValue` or `value` props instead of setting children on <textarea>.\n' + |
| 653 | ' in textarea (at **)', |
| 654 | ]); |
| 655 | expect(node.value).toBe('sharkswithlasers'); |
| 656 | }); |
| 657 | } |
| 658 | |
| 659 | if (!ReactFeatureFlags.disableTextareaChildren) { |
| 660 | it('should throw with multiple or invalid children', async () => { |
| 661 | const container = document.createElement('div'); |
| 662 | const root = ReactDOMClient.createRoot(container); |
| 663 | await expect(async () => { |
| 664 | await act(() => { |
| 665 | root.render( |
| 666 | <textarea> |
| 667 | {'hello'} |
| 668 | {'there'} |
| 669 | </textarea>, |
| 670 | ); |
| 671 | }); |
| 672 | }).rejects.toThrow('<textarea> can only have at most one child'); |
| 673 | assertConsoleErrorDev([ |
| 674 | 'Use the `defaultValue` or `value` props instead of setting children on <textarea>.\n' + |
| 675 | ' in textarea (at **)', |
| 676 | 'Use the `defaultValue` or `value` props instead of setting children on <textarea>.\n' + |
| 677 | ' in textarea (at **)', |
| 678 | ]); |
| 679 | |
| 680 | let node; |
| 681 | await expect( |
| 682 | (async () => |
| 683 | (node = await renderTextarea( |
| 684 | <textarea> |
| 685 | <strong /> |
| 686 | </textarea>, |
| 687 | container, |
| 688 | root, |
| 689 | )))(), |
| 690 | ).resolves.not.toThrow(); |
| 691 | assertConsoleErrorDev([ |
| 692 | 'Use the `defaultValue` or `value` props instead of setting children on <textarea>.\n' + |
| 693 | ' in textarea (at **)', |
| 694 | ]); |
| 695 | |
| 696 | expect(node.value).toBe('[object Object]'); |
| 697 | }); |
| 698 | } |
| 699 | |
| 700 | it('should unmount', async () => { |
| 701 | const container = document.createElement('div'); |
| 702 | const root = ReactDOMClient.createRoot(container); |
| 703 | await act(() => { |
| 704 | root.render(<textarea />); |
| 705 | }); |
| 706 | |
| 707 | await act(() => { |
| 708 | root.unmount(); |
| 709 | }); |
| 710 | }); |
| 711 | |
| 712 | it('should warn if value is null', async () => { |
| 713 | const container = document.createElement('div'); |
| 714 | const root = ReactDOMClient.createRoot(container); |
| 715 | await act(() => { |
| 716 | root.render(<textarea value={null} />); |
| 717 | }); |
| 718 | assertConsoleErrorDev([ |
| 719 | '`value` prop on `textarea` should not be null. ' + |
| 720 | 'Consider using an empty string to clear the component or `undefined` ' + |
| 721 | 'for uncontrolled components.\n' + |
| 722 | ' in textarea (at **)', |
| 723 | ]); |
| 724 | |
| 725 | await act(() => { |
| 726 | root.render(<textarea value={null} />); |
| 727 | }); |
| 728 | }); |
| 729 | |
| 730 | it('should warn if value and defaultValue are specified', async () => { |
| 731 | const InvalidComponent = () => ( |
| 732 | <textarea value="foo" defaultValue="bar" readOnly={true} /> |
| 733 | ); |
| 734 | let container = document.createElement('div'); |
| 735 | let root = ReactDOMClient.createRoot(container); |
| 736 | await act(() => { |
| 737 | root.render(<InvalidComponent />); |
| 738 | }); |
| 739 | assertConsoleErrorDev([ |
| 740 | 'InvalidComponent contains a textarea with both value and defaultValue props. ' + |
| 741 | 'Textarea elements must be either controlled or uncontrolled ' + |
| 742 | '(specify either the value prop, or the defaultValue prop, but not ' + |
| 743 | 'both). Decide between using a controlled or uncontrolled textarea ' + |
| 744 | 'and remove one of these props. More info: ' + |
| 745 | 'https://react.dev/link/controlled-components\n' + |
| 746 | ' in textarea (at **)\n' + |
| 747 | ' in InvalidComponent (at **)', |
| 748 | ]); |
| 749 | |
| 750 | container = document.createElement('div'); |
| 751 | root = ReactDOMClient.createRoot(container); |
| 752 | |
| 753 | await act(() => { |
| 754 | root.render(<InvalidComponent />); |
| 755 | }); |
| 756 | }); |
| 757 | |
| 758 | it('should not warn about missing onChange in uncontrolled textareas', async () => { |
| 759 | const container = document.createElement('div'); |
| 760 | let root = ReactDOMClient.createRoot(container); |
| 761 | |
| 762 | await act(() => { |
| 763 | root.render(<textarea />); |
| 764 | }); |
| 765 | |
| 766 | await act(() => { |
| 767 | root.unmount(); |
| 768 | }); |
| 769 | root = ReactDOMClient.createRoot(container); |
| 770 | |
| 771 | await act(() => { |
| 772 | root.render(<textarea value={undefined} />); |
| 773 | }); |
| 774 | }); |
| 775 | |
| 776 | it('does not set textContent if value is unchanged', async () => { |
| 777 | const container = document.createElement('div'); |
| 778 | let node; |
| 779 | let instance; |
| 780 | // Setting defaultValue on a textarea is equivalent to setting textContent, |
| 781 | // and is the method we currently use, so we can observe if defaultValue is |
| 782 | // is set to determine if textContent is being recreated. |
| 783 | // https://html.spec.whatwg.org/#the-textarea-element |
| 784 | let defaultValue; |
| 785 | const set = jest.fn(value => { |
| 786 | defaultValue = value; |
| 787 | }); |
| 788 | const get = jest.fn(value => { |
| 789 | return defaultValue; |
| 790 | }); |
| 791 | class App extends React.Component { |
| 792 | state = {count: 0, text: 'foo'}; |
| 793 | componentDidMount() { |
| 794 | instance = this; |
| 795 | } |
| 796 | render() { |
| 797 | return ( |
| 798 | <div> |
| 799 | <span>{this.state.count}</span> |
| 800 | <textarea |
| 801 | ref={n => (node = n)} |
| 802 | value="foo" |
| 803 | onChange={emptyFunction} |
| 804 | data-count={this.state.count} |
| 805 | /> |
| 806 | </div> |
| 807 | ); |
| 808 | } |
| 809 | } |
| 810 | const root = ReactDOMClient.createRoot(container); |
| 811 | await act(() => { |
| 812 | root.render(<App />); |
| 813 | }); |
| 814 | |
| 815 | defaultValue = node.defaultValue; |
| 816 | Object.defineProperty(node, 'defaultValue', {get, set}); |
| 817 | instance.setState({count: 1}); |
| 818 | expect(set.mock.calls.length).toBe(0); |
| 819 | }); |
| 820 | |
| 821 | describe('When given a Symbol value', () => { |
| 822 | it('treats initial Symbol value as an empty string', async () => { |
| 823 | const container = document.createElement('div'); |
| 824 | const root = ReactDOMClient.createRoot(container); |
| 825 | await act(() => { |
| 826 | root.render(<textarea value={Symbol('foobar')} onChange={() => {}} />); |
| 827 | }); |
| 828 | assertConsoleErrorDev([ |
| 829 | 'Invalid value for prop `value` on <textarea> tag. ' + |
| 830 | 'Either remove it from the element, or pass a string or number value to keep it in the DOM. ' + |
| 831 | 'For details, see https://react.dev/link/attribute-behavior \n' + |
| 832 | ' in textarea (at **)', |
| 833 | ]); |
| 834 | const node = container.firstChild; |
| 835 | |
| 836 | expect(node.value).toBe(''); |
| 837 | }); |
| 838 | |
| 839 | it('treats initial Symbol children as an empty string', async () => { |
| 840 | const container = document.createElement('div'); |
| 841 | const root = ReactDOMClient.createRoot(container); |
| 842 | await act(() => { |
| 843 | root.render(<textarea onChange={() => {}}>{Symbol('foo')}</textarea>); |
| 844 | }); |
| 845 | assertConsoleErrorDev([ |
| 846 | 'Use the `defaultValue` or `value` props instead of setting children on <textarea>.\n' + |
| 847 | ' in textarea (at **)', |
| 848 | ]); |
| 849 | const node = container.firstChild; |
| 850 | |
| 851 | expect(node.value).toBe(''); |
| 852 | }); |
| 853 | |
| 854 | it('treats updated Symbol value as an empty string', async () => { |
| 855 | const container = document.createElement('div'); |
| 856 | const root = ReactDOMClient.createRoot(container); |
| 857 | |
| 858 | await act(() => { |
| 859 | root.render(<textarea value="foo" onChange={() => {}} />); |
| 860 | }); |
| 861 | |
| 862 | await act(() => { |
| 863 | root.render(<textarea value={Symbol('foo')} onChange={() => {}} />); |
| 864 | }); |
| 865 | assertConsoleErrorDev([ |
| 866 | 'Invalid value for prop `value` on <textarea> tag. ' + |
| 867 | 'Either remove it from the element, or pass a string or number value to keep it in the DOM. ' + |
| 868 | 'For details, see https://react.dev/link/attribute-behavior \n' + |
| 869 | ' in textarea (at **)', |
| 870 | ]); |
| 871 | const node = container.firstChild; |
| 872 | |
| 873 | expect(node.value).toBe(''); |
| 874 | }); |
| 875 | |
| 876 | it('treats initial Symbol defaultValue as an empty string', async () => { |
| 877 | const container = document.createElement('div'); |
| 878 | const root = ReactDOMClient.createRoot(container); |
| 879 | |
| 880 | await act(() => { |
| 881 | root.render(<textarea defaultValue={Symbol('foobar')} />); |
| 882 | }); |
| 883 | |
| 884 | const node = container.firstChild; |
| 885 | |
| 886 | // TODO: defaultValue is a reserved prop and is not validated. Check warnings when they are. |
| 887 | expect(node.value).toBe(''); |
| 888 | }); |
| 889 | |
| 890 | it('treats updated Symbol defaultValue as an empty string', async () => { |
| 891 | const container = document.createElement('div'); |
| 892 | const root = ReactDOMClient.createRoot(container); |
| 893 | await act(() => { |
| 894 | root.render(<textarea defaultValue="foo" />); |
| 895 | }); |
| 896 | |
| 897 | await act(() => { |
| 898 | root.render(<textarea defaultValue={Symbol('foobar')} />); |
| 899 | }); |
| 900 | |
| 901 | const node = container.firstChild; |
| 902 | |
| 903 | // TODO: defaultValue is a reserved prop and is not validated. Check warnings when they are. |
| 904 | expect(node.value).toBe('foo'); |
| 905 | }); |
| 906 | }); |
| 907 | |
| 908 | describe('When given a function value', () => { |
| 909 | it('treats initial function value as an empty string', async () => { |
| 910 | const container = document.createElement('div'); |
| 911 | const root = ReactDOMClient.createRoot(container); |
| 912 | |
| 913 | await act(() => { |
| 914 | root.render(<textarea value={() => {}} onChange={() => {}} />); |
| 915 | }); |
| 916 | assertConsoleErrorDev([ |
| 917 | 'Invalid value for prop `value` on <textarea> tag. ' + |
| 918 | 'Either remove it from the element, or pass a string or number value to keep it in the DOM. ' + |
| 919 | 'For details, see https://react.dev/link/attribute-behavior \n' + |
| 920 | ' in textarea (at **)', |
| 921 | ]); |
| 922 | const node = container.firstChild; |
| 923 | |
| 924 | expect(node.value).toBe(''); |
| 925 | }); |
| 926 | |
| 927 | it('treats initial function children as an empty string', async () => { |
| 928 | const container = document.createElement('div'); |
| 929 | const root = ReactDOMClient.createRoot(container); |
| 930 | |
| 931 | await act(() => { |
| 932 | root.render(<textarea onChange={() => {}}>{() => {}}</textarea>); |
| 933 | }); |
| 934 | assertConsoleErrorDev([ |
| 935 | 'Use the `defaultValue` or `value` props instead of setting children on <textarea>.\n' + |
| 936 | ' in textarea (at **)', |
| 937 | ]); |
| 938 | const node = container.firstChild; |
| 939 | |
| 940 | expect(node.value).toBe(''); |
| 941 | }); |
| 942 | |
| 943 | it('treats updated function value as an empty string', async () => { |
| 944 | const container = document.createElement('div'); |
| 945 | const root = ReactDOMClient.createRoot(container); |
| 946 | |
| 947 | await act(() => { |
| 948 | root.render(<textarea value="foo" onChange={() => {}} />); |
| 949 | }); |
| 950 | |
| 951 | await act(() => { |
| 952 | root.render(<textarea value={() => {}} onChange={() => {}} />); |
| 953 | }); |
| 954 | assertConsoleErrorDev([ |
| 955 | 'Invalid value for prop `value` on <textarea> tag. ' + |
| 956 | 'Either remove it from the element, or pass a string or number value to keep it in the DOM. ' + |
| 957 | 'For details, see https://react.dev/link/attribute-behavior \n' + |
| 958 | ' in textarea (at **)', |
| 959 | ]); |
| 960 | const node = container.firstChild; |
| 961 | |
| 962 | expect(node.value).toBe(''); |
| 963 | }); |
| 964 | |
| 965 | it('treats initial function defaultValue as an empty string', async () => { |
| 966 | const container = document.createElement('div'); |
| 967 | const root = ReactDOMClient.createRoot(container); |
| 968 | await act(() => { |
| 969 | root.render(<textarea defaultValue={() => {}} />); |
| 970 | }); |
| 971 | |
| 972 | const node = container.firstChild; |
| 973 | |
| 974 | // TODO: defaultValue is a reserved prop and is not validated. Check warnings when they are. |
| 975 | expect(node.value).toBe(''); |
| 976 | }); |
| 977 | |
| 978 | it('treats updated function defaultValue as an empty string', async () => { |
| 979 | const container = document.createElement('div'); |
| 980 | const root = ReactDOMClient.createRoot(container); |
| 981 | await act(() => { |
| 982 | root.render(<textarea defaultValue="foo" />); |
| 983 | }); |
| 984 | |
| 985 | await act(() => { |
| 986 | root.render(<textarea defaultValue={() => {}} />); |
| 987 | }); |
| 988 | |
| 989 | const node = container.firstChild; |
| 990 | |
| 991 | // TODO: defaultValue is a reserved prop and is not validated. Check warnings when they are. |
| 992 | expect(node.value).toBe('foo'); |
| 993 | }); |
| 994 | }); |
| 995 | |
| 996 | it('should remove previous `defaultValue`', async () => { |
| 997 | const container = document.createElement('div'); |
| 998 | const root = ReactDOMClient.createRoot(container); |
| 999 | await act(() => { |
| 1000 | root.render(<textarea defaultValue="0" />); |
| 1001 | }); |
| 1002 | |
| 1003 | const node = container.firstChild; |
| 1004 | |
| 1005 | expect(node.value).toBe('0'); |
| 1006 | expect(node.defaultValue).toBe('0'); |
| 1007 | |
| 1008 | await act(() => { |
| 1009 | root.render(<textarea />); |
| 1010 | }); |
| 1011 | |
| 1012 | expect(node.defaultValue).toBe(''); |
| 1013 | }); |
| 1014 | |
| 1015 | it('should treat `defaultValue={null}` as missing', async () => { |
| 1016 | const container = document.createElement('div'); |
| 1017 | const root = ReactDOMClient.createRoot(container); |
| 1018 | await act(() => { |
| 1019 | root.render(<textarea defaultValue="0" />); |
| 1020 | }); |
| 1021 | |
| 1022 | const node = container.firstChild; |
| 1023 | |
| 1024 | expect(node.value).toBe('0'); |
| 1025 | expect(node.defaultValue).toBe('0'); |
| 1026 | |
| 1027 | await act(() => { |
| 1028 | root.render(<textarea defaultValue={null} />); |
| 1029 | }); |
| 1030 | |
| 1031 | expect(node.defaultValue).toBe(''); |
| 1032 | }); |
| 1033 | |
| 1034 | it('should not warn about missing onChange if value is undefined', async () => { |
| 1035 | const container = document.createElement('div'); |
| 1036 | const root = ReactDOMClient.createRoot(container); |
| 1037 | await expect( |
| 1038 | act(() => { |
| 1039 | root.render(<textarea value={undefined} />); |
| 1040 | }), |
| 1041 | ).resolves.not.toThrow(); |
| 1042 | }); |
| 1043 | |
| 1044 | it('should not warn about missing onChange if onChange is set', async () => { |
| 1045 | const change = jest.fn(); |
| 1046 | const container = document.createElement('div'); |
| 1047 | const root = ReactDOMClient.createRoot(container); |
| 1048 | await expect( |
| 1049 | act(() => { |
| 1050 | root.render(<textarea value="something" onChange={change} />); |
| 1051 | }), |
| 1052 | ).resolves.not.toThrow(); |
| 1053 | }); |
| 1054 | |
| 1055 | it('should not warn about missing onChange if disabled is true', async () => { |
| 1056 | const container = document.createElement('div'); |
| 1057 | const root = ReactDOMClient.createRoot(container); |
| 1058 | await expect( |
| 1059 | act(() => { |
| 1060 | root.render(<textarea value="something" disabled={true} />); |
| 1061 | }), |
| 1062 | ).resolves.not.toThrow(); |
| 1063 | }); |
| 1064 | |
| 1065 | it('should not warn about missing onChange if value is not set', async () => { |
| 1066 | const container = document.createElement('div'); |
| 1067 | const root = ReactDOMClient.createRoot(container); |
| 1068 | await expect( |
| 1069 | act(() => { |
| 1070 | root.render(<textarea value="something" readOnly={true} />); |
| 1071 | }), |
| 1072 | ).resolves.not.toThrow(); |
| 1073 | }); |
| 1074 | |
| 1075 | it('should warn about missing onChange if value is false', async () => { |
| 1076 | const container = document.createElement('div'); |
| 1077 | const root = ReactDOMClient.createRoot(container); |
| 1078 | await act(() => { |
| 1079 | root.render(<textarea value={false} />); |
| 1080 | }); |
| 1081 | assertConsoleErrorDev([ |
| 1082 | 'You provided a `value` prop to a form ' + |
| 1083 | 'field without an `onChange` handler. This will render a read-only ' + |
| 1084 | 'field. If the field should be mutable use `defaultValue`. ' + |
| 1085 | 'Otherwise, set either `onChange` or `readOnly`.\n' + |
| 1086 | ' in textarea (at **)', |
| 1087 | ]); |
| 1088 | }); |
| 1089 | |
| 1090 | it('should warn about missing onChange if value is 0', async () => { |
| 1091 | const container = document.createElement('div'); |
| 1092 | const root = ReactDOMClient.createRoot(container); |
| 1093 | await act(() => { |
| 1094 | root.render(<textarea value={0} />); |
| 1095 | }); |
| 1096 | assertConsoleErrorDev([ |
| 1097 | 'You provided a `value` prop to a form ' + |
| 1098 | 'field without an `onChange` handler. This will render a read-only ' + |
| 1099 | 'field. If the field should be mutable use `defaultValue`. ' + |
| 1100 | 'Otherwise, set either `onChange` or `readOnly`.\n' + |
| 1101 | ' in textarea (at **)', |
| 1102 | ]); |
| 1103 | }); |
| 1104 | |
| 1105 | it('should warn about missing onChange if value is "0"', async () => { |
| 1106 | const container = document.createElement('div'); |
| 1107 | const root = ReactDOMClient.createRoot(container); |
| 1108 | await act(() => { |
| 1109 | root.render(<textarea value="0" />); |
| 1110 | }); |
| 1111 | assertConsoleErrorDev([ |
| 1112 | 'You provided a `value` prop to a form ' + |
| 1113 | 'field without an `onChange` handler. This will render a read-only ' + |
| 1114 | 'field. If the field should be mutable use `defaultValue`. ' + |
| 1115 | 'Otherwise, set either `onChange` or `readOnly`.\n' + |
| 1116 | ' in textarea (at **)', |
| 1117 | ]); |
| 1118 | }); |
| 1119 | |
| 1120 | it('should warn about missing onChange if value is ""', async () => { |
| 1121 | const container = document.createElement('div'); |
| 1122 | const root = ReactDOMClient.createRoot(container); |
| 1123 | await act(() => { |
| 1124 | root.render(<textarea value="" />); |
| 1125 | }); |
| 1126 | assertConsoleErrorDev([ |
| 1127 | 'You provided a `value` prop to a form ' + |
| 1128 | 'field without an `onChange` handler. This will render a read-only ' + |
| 1129 | 'field. If the field should be mutable use `defaultValue`. ' + |
| 1130 | 'Otherwise, set either `onChange` or `readOnly`.\n' + |
| 1131 | ' in textarea (at **)', |
| 1132 | ]); |
| 1133 | }); |
| 1134 | }); |