| 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 | * @flow |
| 8 | */ |
| 9 | |
| 10 | import type {Fiber, FiberRoot} from 'react-reconciler/src/ReactInternalTypes'; |
| 11 | import type { |
| 12 | Container, |
| 13 | PublicInstance, |
| 14 | Instance, |
| 15 | TextInstance, |
| 16 | } from './ReactFiberConfigTestHost'; |
| 17 | |
| 18 | import * as React from 'react'; |
| 19 | import * as Scheduler from 'scheduler/unstable_mock'; |
| 20 | import { |
| 21 | getPublicRootInstance, |
| 22 | createContainer, |
| 23 | updateContainer, |
| 24 | flushSyncFromReconciler, |
| 25 | injectIntoDevTools, |
| 26 | batchedUpdates, |
| 27 | defaultOnUncaughtError, |
| 28 | defaultOnCaughtError, |
| 29 | defaultOnRecoverableError, |
| 30 | } from 'react-reconciler/src/ReactFiberReconciler'; |
| 31 | import {findCurrentFiberUsingSlowPath} from 'react-reconciler/src/ReactFiberTreeReflection'; |
| 32 | import { |
| 33 | Fragment, |
| 34 | FunctionComponent, |
| 35 | ClassComponent, |
| 36 | HostComponent, |
| 37 | HostHoistable, |
| 38 | HostSingleton, |
| 39 | HostPortal, |
| 40 | HostText, |
| 41 | HostRoot, |
| 42 | ContextConsumer, |
| 43 | ContextProvider, |
| 44 | Mode, |
| 45 | ForwardRef, |
| 46 | Profiler, |
| 47 | MemoComponent, |
| 48 | SimpleMemoComponent, |
| 49 | IncompleteClassComponent, |
| 50 | ScopeComponent, |
| 51 | } from 'react-reconciler/src/ReactWorkTags'; |
| 52 | import isArray from 'shared/isArray'; |
| 53 | import getComponentNameFromType from 'shared/getComponentNameFromType'; |
| 54 | import ReactVersion from 'shared/ReactVersion'; |
| 55 | import {checkPropStringCoercion} from 'shared/CheckStringCoercion'; |
| 56 | |
| 57 | import {getPublicInstance} from './ReactFiberConfigTestHost'; |
| 58 | import {ConcurrentRoot, LegacyRoot} from 'react-reconciler/src/ReactRootTags'; |
| 59 | import { |
| 60 | enableReactTestRendererWarning, |
| 61 | disableLegacyMode, |
| 62 | } from 'shared/ReactFeatureFlags'; |
| 63 | |
| 64 | import noop from 'shared/noop'; |
| 65 | import type {WorkTag} from 'react-reconciler/src/ReactWorkTags'; |
| 66 | |
| 67 | const defaultOnDefaultTransitionIndicator: () => void | (() => void) = noop; |
| 68 | |
| 69 | // $FlowFixMe[prop-missing]: This is only in the development export. |
| 70 | // $FlowFixMe[missing-export] |
| 71 | const act = React.act; |
| 72 | |
| 73 | // TODO: Remove from public bundle |
| 74 | |
| 75 | type TestRendererOptions = { |
| 76 | createNodeMock: (element: React$Element<any>) => any, |
| 77 | unstable_isConcurrent: boolean, |
| 78 | unstable_strictMode: boolean, |
| 79 | ... |
| 80 | }; |
| 81 | |
| 82 | type ReactTestRendererJSON = { |
| 83 | type: string, |
| 84 | props: {[propName: string]: any, ...}, |
| 85 | children: null | Array<ReactTestRendererNode>, |
| 86 | $$typeof?: symbol, // Optional because we add it with defineProperty(). |
| 87 | }; |
| 88 | type ReactTestRendererNode = ReactTestRendererJSON | string; |
| 89 | |
| 90 | type FindOptions = { |
| 91 | // performs a "greedy" search: if a matching node is found, will continue |
| 92 | // to search within the matching node's children. (default: true) |
| 93 | deep?: boolean, |
| 94 | }; |
| 95 | |
| 96 | export type Predicate = (node: ReactTestInstance) => ?boolean; |
| 97 | |
| 98 | const defaultTestOptions = { |
| 99 | createNodeMock: function () { |
| 100 | return null; |
| 101 | }, |
| 102 | }; |
| 103 | |
| 104 | function toJSON(inst: Instance | TextInstance): ReactTestRendererNode | null { |
| 105 | if (inst.isHidden) { |
| 106 | // Omit timed out children from output entirely. This seems like the least |
| 107 | // surprising behavior. We could perhaps add a separate API that includes |
| 108 | // them, if it turns out people need it. |
| 109 | return null; |
| 110 | } |
| 111 | switch (inst.tag) { |
| 112 | case 'TEXT': |
| 113 | return inst.text; |
| 114 | case 'INSTANCE': { |
| 115 | // We don't include the `children` prop in JSON. |
| 116 | // Instead, we will include the actual rendered children. |
| 117 | const {children, ...props} = inst.props; |
| 118 | let renderedChildren = null; |
| 119 | if (inst.children && inst.children.length) { |
| 120 | for (let i = 0; i < inst.children.length; i++) { |
| 121 | const renderedChild = toJSON(inst.children[i]); |
| 122 | if (renderedChild !== null) { |
| 123 | if (renderedChildren === null) { |
| 124 | renderedChildren = [renderedChild]; |
| 125 | } else { |
| 126 | renderedChildren.push(renderedChild); |
| 127 | } |
| 128 | } |
| 129 | } |
| 130 | } |
| 131 | const json: ReactTestRendererJSON = { |
| 132 | type: inst.type, |
| 133 | props: props, |
| 134 | children: renderedChildren, |
| 135 | }; |
| 136 | Object.defineProperty(json, '$$typeof', { |
| 137 | value: Symbol.for('react.test.json'), |
| 138 | }); |
| 139 | return json; |
| 140 | } |
| 141 | default: |
| 142 | throw new Error(`Unexpected node type in toJSON: ${inst.tag}`); |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | function childrenToTree(node: null | Fiber) { |
| 147 | if (!node) { |
| 148 | return null; |
| 149 | } |
| 150 | const children = nodeAndSiblingsArray(node); |
| 151 | if (children.length === 0) { |
| 152 | return null; |
| 153 | } else if (children.length === 1) { |
| 154 | return toTree(children[0]); |
| 155 | } |
| 156 | return flatten(children.map(toTree)); |
| 157 | } |
| 158 | |
| 159 | // $FlowFixMe[missing-local-annot] |
| 160 | function nodeAndSiblingsArray(nodeWithSibling) { |
| 161 | const array = []; |
| 162 | let node = nodeWithSibling; |
| 163 | while (node != null) { |
| 164 | array.push(node); |
| 165 | node = node.sibling; |
| 166 | } |
| 167 | return array; |
| 168 | } |
| 169 | |
| 170 | // $FlowFixMe[missing-local-annot] |
| 171 | function flatten(arr) { |
| 172 | const result = []; |
| 173 | const stack = [{i: 0, array: arr}]; |
| 174 | while (stack.length) { |
| 175 | const n = stack.pop(); |
| 176 | // $FlowFixMe[incompatible-use] |
| 177 | while (n.i < n.array.length) { |
| 178 | // $FlowFixMe[incompatible-use] |
| 179 | const el = n.array[n.i]; |
| 180 | // $FlowFixMe[incompatible-use] |
| 181 | n.i += 1; |
| 182 | if (isArray(el)) { |
| 183 | // $FlowFixMe[incompatible-type] |
| 184 | stack.push(n); |
| 185 | stack.push({i: 0, array: el}); |
| 186 | break; |
| 187 | } |
| 188 | result.push(el); |
| 189 | } |
| 190 | } |
| 191 | return result; |
| 192 | } |
| 193 | |
| 194 | function toTree(node: null | Fiber): $FlowFixMe { |
| 195 | if (node == null) { |
| 196 | return null; |
| 197 | } |
| 198 | switch (node.tag) { |
| 199 | case HostRoot: |
| 200 | return childrenToTree(node.child); |
| 201 | case HostPortal: |
| 202 | return childrenToTree(node.child); |
| 203 | case ClassComponent: |
| 204 | return { |
| 205 | nodeType: 'component', |
| 206 | type: node.type, |
| 207 | props: {...node.memoizedProps}, |
| 208 | instance: node.stateNode, |
| 209 | rendered: childrenToTree(node.child), |
| 210 | }; |
| 211 | case FunctionComponent: |
| 212 | case SimpleMemoComponent: |
| 213 | return { |
| 214 | nodeType: 'component', |
| 215 | type: node.type, |
| 216 | props: {...node.memoizedProps}, |
| 217 | instance: null, |
| 218 | rendered: childrenToTree(node.child), |
| 219 | }; |
| 220 | case HostHoistable: |
| 221 | case HostSingleton: |
| 222 | case HostComponent: { |
| 223 | return { |
| 224 | nodeType: 'host', |
| 225 | type: node.type, |
| 226 | props: {...node.memoizedProps}, |
| 227 | instance: null, // TODO: use createNodeMock here somehow? |
| 228 | rendered: flatten(nodeAndSiblingsArray(node.child).map(toTree)), |
| 229 | }; |
| 230 | } |
| 231 | case HostText: |
| 232 | return node.stateNode.text; |
| 233 | case Fragment: |
| 234 | case ContextProvider: |
| 235 | case ContextConsumer: |
| 236 | case Mode: |
| 237 | case Profiler: |
| 238 | case ForwardRef: |
| 239 | case MemoComponent: |
| 240 | case IncompleteClassComponent: |
| 241 | case ScopeComponent: |
| 242 | return childrenToTree(node.child); |
| 243 | default: |
| 244 | throw new Error( |
| 245 | `toTree() does not yet know how to handle nodes with tag=${node.tag}`, |
| 246 | ); |
| 247 | } |
| 248 | } |
| 249 | |
| 250 | const validWrapperTypes: Set<WorkTag> = new Set([ |
| 251 | FunctionComponent, |
| 252 | ClassComponent, |
| 253 | HostComponent, |
| 254 | ForwardRef, |
| 255 | MemoComponent, |
| 256 | SimpleMemoComponent, |
| 257 | // Normally skipped, but used when there's more than one root child. |
| 258 | HostRoot, |
| 259 | ]); |
| 260 | |
| 261 | function getChildren(parent: Fiber) { |
| 262 | const children = []; |
| 263 | const startingNode = parent; |
| 264 | let node: Fiber = startingNode; |
| 265 | if (node.child === null) { |
| 266 | return children; |
| 267 | } |
| 268 | node.child.return = node; |
| 269 | node = node.child; |
| 270 | outer: while (true) { |
| 271 | let descend = false; |
| 272 | if (validWrapperTypes.has(node.tag)) { |
| 273 | children.push(wrapFiber(node)); |
| 274 | } else if (node.tag === HostText) { |
| 275 | if (__DEV__) { |
| 276 | checkPropStringCoercion(node.memoizedProps, 'memoizedProps'); |
| 277 | } |
| 278 | children.push('' + node.memoizedProps); |
| 279 | } else { |
| 280 | descend = true; |
| 281 | } |
| 282 | if (descend && node.child !== null) { |
| 283 | node.child.return = node; |
| 284 | node = node.child; |
| 285 | continue; |
| 286 | } |
| 287 | while (node.sibling === null) { |
| 288 | if (node.return === startingNode) { |
| 289 | break outer; |
| 290 | } |
| 291 | node = node.return as any; |
| 292 | } |
| 293 | (node.sibling as any).return = node.return; |
| 294 | node = node.sibling as any; |
| 295 | } |
| 296 | return children; |
| 297 | } |
| 298 | |
| 299 | class ReactTestInstance { |
| 300 | _fiber: Fiber; |
| 301 | |
| 302 | _currentFiber(): Fiber { |
| 303 | // Throws if this component has been unmounted. |
| 304 | const fiber = findCurrentFiberUsingSlowPath(this._fiber); |
| 305 | |
| 306 | if (fiber === null) { |
| 307 | throw new Error( |
| 308 | "Can't read from currently-mounting component. This error is likely " + |
| 309 | 'caused by a bug in React. Please file an issue.', |
| 310 | ); |
| 311 | } |
| 312 | |
| 313 | return fiber; |
| 314 | } |
| 315 | |
| 316 | constructor(fiber: Fiber) { |
| 317 | if (!validWrapperTypes.has(fiber.tag)) { |
| 318 | throw new Error( |
| 319 | `Unexpected object passed to ReactTestInstance constructor (tag: ${fiber.tag}). ` + |
| 320 | 'This is probably a bug in React.', |
| 321 | ); |
| 322 | } |
| 323 | |
| 324 | this._fiber = fiber; |
| 325 | } |
| 326 | |
| 327 | get instance(): $FlowFixMe { |
| 328 | const tag = this._fiber.tag; |
| 329 | if ( |
| 330 | tag === HostComponent || |
| 331 | tag === HostHoistable || |
| 332 | tag === HostSingleton |
| 333 | ) { |
| 334 | return getPublicInstance(this._fiber.stateNode); |
| 335 | } else { |
| 336 | return this._fiber.stateNode; |
| 337 | } |
| 338 | } |
| 339 | |
| 340 | get type(): any { |
| 341 | return this._fiber.type; |
| 342 | } |
| 343 | |
| 344 | get props(): Object { |
| 345 | return this._currentFiber().memoizedProps; |
| 346 | } |
| 347 | |
| 348 | get parent(): ?ReactTestInstance { |
| 349 | let parent = this._fiber.return; |
| 350 | while (parent !== null) { |
| 351 | if (validWrapperTypes.has(parent.tag)) { |
| 352 | if (parent.tag === HostRoot) { |
| 353 | // Special case: we only "materialize" instances for roots |
| 354 | // if they have more than a single child. So we'll check that now. |
| 355 | if (getChildren(parent).length < 2) { |
| 356 | return null; |
| 357 | } |
| 358 | } |
| 359 | return wrapFiber(parent); |
| 360 | } |
| 361 | parent = parent.return; |
| 362 | } |
| 363 | return null; |
| 364 | } |
| 365 | |
| 366 | get children(): Array<ReactTestInstance | string> { |
| 367 | return getChildren(this._currentFiber()); |
| 368 | } |
| 369 | |
| 370 | // Custom search functions |
| 371 | find(predicate: Predicate): ReactTestInstance { |
| 372 | return expectOne( |
| 373 | this.findAll(predicate, {deep: false}), |
| 374 | `matching custom predicate: ${predicate.toString()}`, |
| 375 | ); |
| 376 | } |
| 377 | |
| 378 | findByType(type: any): ReactTestInstance { |
| 379 | return expectOne( |
| 380 | this.findAllByType(type, {deep: false}), |
| 381 | `with node type: "${getComponentNameFromType(type) || 'Unknown'}"`, |
| 382 | ); |
| 383 | } |
| 384 | |
| 385 | findByProps(props: Object): ReactTestInstance { |
| 386 | return expectOne( |
| 387 | this.findAllByProps(props, {deep: false}), |
| 388 | `with props: ${JSON.stringify(props)}`, |
| 389 | ); |
| 390 | } |
| 391 | |
| 392 | findAll( |
| 393 | predicate: Predicate, |
| 394 | options: ?FindOptions = null, |
| 395 | ): Array<ReactTestInstance> { |
| 396 | return findAll(this, predicate, options); |
| 397 | } |
| 398 | |
| 399 | findAllByType( |
| 400 | type: any, |
| 401 | options: ?FindOptions = null, |
| 402 | ): Array<ReactTestInstance> { |
| 403 | return findAll(this, node => node.type === type, options); |
| 404 | } |
| 405 | |
| 406 | findAllByProps( |
| 407 | props: Object, |
| 408 | options: ?FindOptions = null, |
| 409 | ): Array<ReactTestInstance> { |
| 410 | return findAll( |
| 411 | this, |
| 412 | node => node.props && propsMatch(node.props, props), |
| 413 | options, |
| 414 | ); |
| 415 | } |
| 416 | } |
| 417 | |
| 418 | function findAll( |
| 419 | root: ReactTestInstance, |
| 420 | predicate: Predicate, |
| 421 | options: ?FindOptions, |
| 422 | ): Array<ReactTestInstance> { |
| 423 | const deep = options ? options.deep : true; |
| 424 | const results = []; |
| 425 | |
| 426 | if (predicate(root)) { |
| 427 | results.push(root); |
| 428 | if (!deep) { |
| 429 | return results; |
| 430 | } |
| 431 | } |
| 432 | |
| 433 | root.children.forEach(child => { |
| 434 | if (typeof child === 'string') { |
| 435 | return; |
| 436 | } |
| 437 | results.push(...findAll(child, predicate, options)); |
| 438 | }); |
| 439 | |
| 440 | return results; |
| 441 | } |
| 442 | |
| 443 | function expectOne( |
| 444 | all: Array<ReactTestInstance>, |
| 445 | message: string, |
| 446 | ): ReactTestInstance { |
| 447 | if (all.length === 1) { |
| 448 | return all[0]; |
| 449 | } |
| 450 | |
| 451 | const prefix = |
| 452 | all.length === 0 |
| 453 | ? 'No instances found ' |
| 454 | : `Expected 1 but found ${all.length} instances `; |
| 455 | |
| 456 | throw new Error(prefix + message); |
| 457 | } |
| 458 | |
| 459 | function propsMatch(props: Object, filter: Object): boolean { |
| 460 | for (const key in filter) { |
| 461 | if (props[key] !== filter[key]) { |
| 462 | return false; |
| 463 | } |
| 464 | } |
| 465 | return true; |
| 466 | } |
| 467 | |
| 468 | function create( |
| 469 | element: React$Element<any>, |
| 470 | options: TestRendererOptions, |
| 471 | ): { |
| 472 | _Scheduler: typeof Scheduler, |
| 473 | root: void, |
| 474 | toJSON(): Array<ReactTestRendererNode> | ReactTestRendererNode | null, |
| 475 | toTree(): mixed, |
| 476 | update(newElement: React$Element<any>): any, |
| 477 | unmount(): void, |
| 478 | getInstance(): component(...props: any) | PublicInstance | null, |
| 479 | unstable_flushSync: typeof flushSyncFromReconciler, |
| 480 | } { |
| 481 | if (__DEV__) { |
| 482 | if ( |
| 483 | enableReactTestRendererWarning === true && |
| 484 | global.IS_REACT_NATIVE_TEST_ENVIRONMENT !== true |
| 485 | ) { |
| 486 | console.error( |
| 487 | 'react-test-renderer is deprecated. See https://react.dev/warnings/react-test-renderer', |
| 488 | ); |
| 489 | } |
| 490 | } |
| 491 | |
| 492 | let createNodeMock = defaultTestOptions.createNodeMock; |
| 493 | const isConcurrentOnly = |
| 494 | disableLegacyMode === true && |
| 495 | global.IS_REACT_NATIVE_TEST_ENVIRONMENT !== true; |
| 496 | let isConcurrent = isConcurrentOnly; |
| 497 | let isStrictMode = false; |
| 498 | // $FlowFixMe[invalid-compare] |
| 499 | if (typeof options === 'object' && options !== null) { |
| 500 | if (typeof options.createNodeMock === 'function') { |
| 501 | // $FlowFixMe[incompatible-type] found when upgrading Flow |
| 502 | createNodeMock = options.createNodeMock; |
| 503 | } |
| 504 | if (isConcurrentOnly === false) { |
| 505 | isConcurrent = options.unstable_isConcurrent; |
| 506 | } |
| 507 | if (options.unstable_strictMode === true) { |
| 508 | isStrictMode = true; |
| 509 | } |
| 510 | } |
| 511 | let container: Container = { |
| 512 | children: [] as Array<Instance | TextInstance>, |
| 513 | createNodeMock, |
| 514 | tag: 'CONTAINER', |
| 515 | }; |
| 516 | let root: FiberRoot | null = createContainer( |
| 517 | container, |
| 518 | isConcurrent ? ConcurrentRoot : LegacyRoot, |
| 519 | null, |
| 520 | isStrictMode, |
| 521 | false, |
| 522 | '', |
| 523 | defaultOnUncaughtError, |
| 524 | defaultOnCaughtError, |
| 525 | defaultOnRecoverableError, |
| 526 | defaultOnDefaultTransitionIndicator, |
| 527 | null, |
| 528 | ); |
| 529 | |
| 530 | if (root == null) { |
| 531 | throw new Error('something went wrong'); |
| 532 | } |
| 533 | |
| 534 | // $FlowFixMe[incompatible-type] |
| 535 | updateContainer(element, root, null, null); |
| 536 | |
| 537 | const entry = { |
| 538 | _Scheduler: Scheduler, |
| 539 | |
| 540 | root: undefined, // makes flow happy |
| 541 | // we define a 'getter' for 'root' below using 'Object.defineProperty' |
| 542 | toJSON(): Array<ReactTestRendererNode> | ReactTestRendererNode | null { |
| 543 | if (root == null || root.current == null || container == null) { |
| 544 | return null; |
| 545 | } |
| 546 | if (container.children.length === 0) { |
| 547 | return null; |
| 548 | } |
| 549 | if (container.children.length === 1) { |
| 550 | return toJSON(container.children[0]); |
| 551 | } |
| 552 | if ( |
| 553 | container.children.length === 2 && |
| 554 | container.children[0].isHidden === true && |
| 555 | container.children[1].isHidden === false |
| 556 | ) { |
| 557 | // Omit timed out children from output entirely, including the fact that we |
| 558 | // temporarily wrap fallback and timed out children in an array. |
| 559 | return toJSON(container.children[1]); |
| 560 | } |
| 561 | let renderedChildren = null; |
| 562 | if (container.children && container.children.length) { |
| 563 | for (let i = 0; i < container.children.length; i++) { |
| 564 | const renderedChild = toJSON(container.children[i]); |
| 565 | if (renderedChild !== null) { |
| 566 | if (renderedChildren === null) { |
| 567 | renderedChildren = [renderedChild]; |
| 568 | } else { |
| 569 | renderedChildren.push(renderedChild); |
| 570 | } |
| 571 | } |
| 572 | } |
| 573 | } |
| 574 | return renderedChildren; |
| 575 | }, |
| 576 | toTree() { |
| 577 | if (root == null || root.current == null) { |
| 578 | return null; |
| 579 | } |
| 580 | return toTree(root.current); |
| 581 | }, |
| 582 | update(newElement: React$Element<any>): number | void { |
| 583 | if (root == null || root.current == null) { |
| 584 | return; |
| 585 | } |
| 586 | // $FlowFixMe[incompatible-type] |
| 587 | updateContainer(newElement, root, null, null); |
| 588 | }, |
| 589 | unmount() { |
| 590 | if (root == null || root.current == null) { |
| 591 | return; |
| 592 | } |
| 593 | updateContainer(null, root, null, null); |
| 594 | // $FlowFixMe[incompatible-type] found when upgrading Flow |
| 595 | container = null; |
| 596 | root = null; |
| 597 | }, |
| 598 | getInstance() { |
| 599 | if (root == null || root.current == null) { |
| 600 | return null; |
| 601 | } |
| 602 | return getPublicRootInstance(root); |
| 603 | }, |
| 604 | |
| 605 | unstable_flushSync: flushSyncFromReconciler, |
| 606 | }; |
| 607 | |
| 608 | Object.defineProperty(entry, 'root', { |
| 609 | configurable: true, |
| 610 | enumerable: true, |
| 611 | get: function () { |
| 612 | if (root === null) { |
| 613 | throw new Error("Can't access .root on unmounted test renderer"); |
| 614 | } |
| 615 | const children = getChildren(root.current); |
| 616 | if (children.length === 0) { |
| 617 | throw new Error("Can't access .root on unmounted test renderer"); |
| 618 | } else if (children.length === 1) { |
| 619 | // Normally, we skip the root and just give you the child. |
| 620 | return children[0]; |
| 621 | } else { |
| 622 | // However, we give you the root if there's more than one root child. |
| 623 | // We could make this the behavior for all cases but it would be a breaking change. |
| 624 | // $FlowFixMe[incompatible-use] found when upgrading Flow |
| 625 | return wrapFiber(root.current); |
| 626 | } |
| 627 | }, |
| 628 | } as Object); |
| 629 | |
| 630 | return entry; |
| 631 | } |
| 632 | |
| 633 | const fiberToWrapper = new WeakMap<Fiber, ReactTestInstance>(); |
| 634 | function wrapFiber(fiber: Fiber): ReactTestInstance { |
| 635 | let wrapper = fiberToWrapper.get(fiber); |
| 636 | if (wrapper === undefined && fiber.alternate !== null) { |
| 637 | wrapper = fiberToWrapper.get(fiber.alternate); |
| 638 | } |
| 639 | if (wrapper === undefined) { |
| 640 | wrapper = new ReactTestInstance(fiber); |
| 641 | fiberToWrapper.set(fiber, wrapper); |
| 642 | } |
| 643 | return wrapper; |
| 644 | } |
| 645 | |
| 646 | // Enable ReactTestRenderer to be used to test DevTools integration. |
| 647 | injectIntoDevTools(); |
| 648 | |
| 649 | export { |
| 650 | Scheduler as _Scheduler, |
| 651 | create, |
| 652 | batchedUpdates as unstable_batchedUpdates, |
| 653 | act, |
| 654 | ReactVersion as version, |
| 655 | }; |