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/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.dev/license
*/
import { Inject, Injectable, InjectionToken } from '../di';
import { NgZone } from '../zone/ng_zone';
import * as i0 from "../r3_symbols";
import * as i1 from "../zone/ng_zone";
/**
* Internal injection token that can used to access an instance of a Testability class.
*
* This token acts as a bridge between the core bootstrap code and the `Testability` class. This is
* needed to ensure that there are no direct references to the `Testability` class, so it can be
* tree-shaken away (if not referenced). For the environments/setups when the `Testability` class
* should be available, this token is used to add a provider that references the `Testability`
* class. Otherwise, only this token is retained in a bundle, but the `Testability` class is not.
*/
export const TESTABILITY = new InjectionToken('');
/**
* Internal injection token to retrieve Testability getter class instance.
*/
export const TESTABILITY_GETTER = new InjectionToken('');
/**
* The Testability service provides testing hooks that can be accessed from
* the browser.
*
* Angular applications bootstrapped using an NgModule (via `@NgModule.bootstrap` field) will also
* instantiate Testability by default (in both development and production modes).
*
* For applications bootstrapped using the `bootstrapApplication` function, Testability is not
* included by default. You can include it into your applications by getting the list of necessary
* providers using the `provideProtractorTestingSupport()` function and adding them into the
* `options.providers` array. Example:
*
* ```typescript
* import {provideProtractorTestingSupport} from '@angular/platform-browser';
*
* await bootstrapApplication(RootComponent, providers: [provideProtractorTestingSupport()]);
* ```
*
* @publicApi
*/
export class Testability {
constructor(_ngZone, registry, testabilityGetter) {
this._ngZone = _ngZone;
this.registry = registry;
this._isZoneStable = true;
this._callbacks = [];
this.taskTrackingZone = null;
// If there was no Testability logic registered in the global scope
// before, register the current testability getter as a global one.
if (!_testabilityGetter) {
setTestabilityGetter(testabilityGetter);
testabilityGetter.addToWindow(registry);
}
this._watchAngularEvents();
_ngZone.run(() => {
this.taskTrackingZone =
typeof Zone == 'undefined' ? null : Zone.current.get('TaskTrackingZone');
});
}
_watchAngularEvents() {
this._ngZone.onUnstable.subscribe({
next: () => {
this._isZoneStable = false;
},
});
this._ngZone.runOutsideAngular(() => {
this._ngZone.onStable.subscribe({
next: () => {
NgZone.assertNotInAngularZone();
queueMicrotask(() => {
this._isZoneStable = true;
this._runCallbacksIfReady();
});
},
});
});
}
/**
* Whether an associated application is stable
*/
isStable() {
return this._isZoneStable && !this._ngZone.hasPendingMacrotasks;
}
_runCallbacksIfReady() {
if (this.isStable()) {
// Schedules the call backs in a new frame so that it is always async.
queueMicrotask(() => {
while (this._callbacks.length !== 0) {
let cb = this._callbacks.pop();
clearTimeout(cb.timeoutId);
cb.doneCb();
}
});
}
else {
// Still not stable, send updates.
let pending = this.getPendingTasks();
this._callbacks = this._callbacks.filter((cb) => {
if (cb.updateCb && cb.updateCb(pending)) {
clearTimeout(cb.timeoutId);
return false;
}
return true;
});
}
}
getPendingTasks() {
if (!this.taskTrackingZone) {
return [];
}
// Copy the tasks data so that we don't leak tasks.
return this.taskTrackingZone.macroTasks.map((t) => {
return {
source: t.source,
// From TaskTrackingZone:
// https://github.com/angular/zone.js/blob/master/lib/zone-spec/task-tracking.ts#L40
creationLocation: t.creationLocation,
data: t.data,
};
});
}
addCallback(cb, timeout, updateCb) {
let timeoutId = -1;
if (timeout && timeout > 0) {
timeoutId = setTimeout(() => {
this._callbacks = this._callbacks.filter((cb) => cb.timeoutId !== timeoutId);
cb();
}, timeout);
}
this._callbacks.push({ doneCb: cb, timeoutId: timeoutId, updateCb: updateCb });
}
/**
* Wait for the application to be stable with a timeout. If the timeout is reached before that
* happens, the callback receives a list of the macro tasks that were pending, otherwise null.
*
* @param doneCb The callback to invoke when Angular is stable or the timeout expires
* whichever comes first.
* @param timeout Optional. The maximum time to wait for Angular to become stable. If not
* specified, whenStable() will wait forever.
* @param updateCb Optional. If specified, this callback will be invoked whenever the set of
* pending macrotasks changes. If this callback returns true doneCb will not be invoked
* and no further updates will be issued.
*/
whenStable(doneCb, timeout, updateCb) {
if (updateCb && !this.taskTrackingZone) {
throw new Error('Task tracking zone is required when passing an update callback to ' +
'whenStable(). Is "zone.js/plugins/task-tracking" loaded?');
}
this.addCallback(doneCb, timeout, updateCb);
this._runCallbacksIfReady();
}
/**
* Registers an application with a testability hook so that it can be tracked.
* @param token token of application, root element
*
* @internal
*/
registerApplication(token) {
this.registry.registerApplication(token, this);
}
/**
* Unregisters an application.
* @param token token of application, root element
*
* @internal
*/
unregisterApplication(token) {
this.registry.unregisterApplication(token);
}
/**
* Find providers by name
* @param using The root element to search from
* @param provider The name of binding variable
* @param exactMatch Whether using exactMatch
*/
findProviders(using, provider, exactMatch) {
// TODO(juliemr): implement.
return [];
}
static { this.ɵfac = function Testability_Factory(__ngFactoryType__) { return new (__ngFactoryType__ || Testability)(i0.ɵɵinject(i1.NgZone), i0.ɵɵinject(TestabilityRegistry), i0.ɵɵinject(TESTABILITY_GETTER)); }; }
static { this.ɵprov = /*@__PURE__*/ i0.ɵɵdefineInjectable({ token: Testability, factory: Testability.ɵfac }); }
}
(() => { (typeof ngDevMode === "undefined" || ngDevMode) && i0.setClassMetadata(Testability, [{
type: Injectable
}], () => [{ type: i1.NgZone }, { type: TestabilityRegistry }, { type: undefined, decorators: [{
type: Inject,
args: [TESTABILITY_GETTER]
}] }], null); })();
/**
* A global registry of {@link Testability} instances for specific elements.
* @publicApi
*/
export class TestabilityRegistry {
constructor() {
/** @internal */
this._applications = new Map();
}
/**
* Registers an application with a testability hook so that it can be tracked
* @param token token of application, root element
* @param testability Testability hook
*/
registerApplication(token, testability) {
this._applications.set(token, testability);
}
/**
* Unregisters an application.
* @param token token of application, root element
*/
unregisterApplication(token) {
this._applications.delete(token);
}
/**
* Unregisters all applications
*/
unregisterAllApplications() {
this._applications.clear();
}
/**
* Get a testability hook associated with the application
* @param elem root element
*/
getTestability(elem) {
return this._applications.get(elem) || null;
}
/**
* Get all registered testabilities
*/
getAllTestabilities() {
return Array.from(this._applications.values());
}
/**
* Get all registered applications(root elements)
*/
getAllRootElements() {
return Array.from(this._applications.keys());
}
/**
* Find testability of a node in the Tree
* @param elem node
* @param findInAncestors whether finding testability in ancestors if testability was not found in
* current node
*/
findTestabilityInTree(elem, findInAncestors = true) {
return _testabilityGetter?.findTestabilityInTree(this, elem, findInAncestors) ?? null;
}
static { this.ɵfac = function TestabilityRegistry_Factory(__ngFactoryType__) { return new (__ngFactoryType__ || TestabilityRegistry)(); }; }
static { this.ɵprov = /*@__PURE__*/ i0.ɵɵdefineInjectable({ token: TestabilityRegistry, factory: TestabilityRegistry.ɵfac, providedIn: 'platform' }); }
}
(() => { (typeof ngDevMode === "undefined" || ngDevMode) && i0.setClassMetadata(TestabilityRegistry, [{
type: Injectable,
args: [{ providedIn: 'platform' }]
}], null, null); })();
/**
* Set the {@link GetTestability} implementation used by the Angular testing framework.
* @publicApi
*/
export function setTestabilityGetter(getter) {
_testabilityGetter = getter;
}
let _testabilityGetter;
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.dev/license\n */\n\nimport {Inject, Injectable, InjectionToken} from '../di';\nimport {NgZone} from '../zone/ng_zone';\n\n/**\n * Testability API.\n * `declare` keyword causes tsickle to generate externs, so these methods are\n * not renamed by Closure Compiler.\n * @publicApi\n */\nexport declare interface PublicTestability {\n  isStable(): boolean;\n  whenStable(callback: Function, timeout?: number, updateCallback?: Function): void;\n  findProviders(using: any, provider: string, exactMatch: boolean): any[];\n}\n\n// Angular internal, not intended for public API.\nexport interface PendingMacrotask {\n  source: string;\n  creationLocation: Error;\n  runCount?: number;\n  data?: TaskData;\n}\n\nexport interface TaskData {\n  target?: XMLHttpRequest;\n  delay?: number;\n  isPeriodic?: boolean;\n}\n\ninterface WaitCallback {\n  // Needs to be 'any' - setTimeout returns a number according to ES6, but\n  // on NodeJS it returns a Timer.\n  timeoutId: any;\n  doneCb: Function;\n  updateCb?: Function;\n}\n\n/**\n * Internal injection token that can used to access an instance of a Testability class.\n *\n * This token acts as a bridge between the core bootstrap code and the `Testability` class. This is\n * needed to ensure that there are no direct references to the `Testability` class, so it can be\n * tree-shaken away (if not referenced). For the environments/setups when the `Testability` class\n * should be available, this token is used to add a provider that references the `Testability`\n * class. Otherwise, only this token is retained in a bundle, but the `Testability` class is not.\n */\nexport const TESTABILITY = new InjectionToken<Testability>('');\n\n/**\n * Internal injection token to retrieve Testability getter class instance.\n */\nexport const TESTABILITY_GETTER = new InjectionToken<GetTestability>('');\n\n/**\n * The Testability service provides testing hooks that can be accessed from\n * the browser.\n *\n * Angular applications bootstrapped using an NgModule (via `@NgModule.bootstrap` field) will also\n * instantiate Testability by default (in both development and production modes).\n *\n * For applications bootstrapped using the `bootstrapApplication` function, Testability is not\n * included by default. You can include it into your applications by getting the list of necessary\n * providers using the `provideProtractorTestingSupport()` function and adding them into the\n * `options.providers` array. Example:\n *\n * ```typescript\n * import {provideProtractorTestingSupport} from '@angular/platform-browser';\n *\n * await bootstrapApplication(RootComponent, providers: [provideProtractorTestingSupport()]);\n * ```\n *\n * @publicApi\n */\n@Injectable()\nexport class Testability implements PublicTestability {\n  private _isZoneStable: boolean = true;\n  private _callbacks: WaitCallback[] = [];\n\n  private taskTrackingZone: {macroTasks: Task[]} | null = null;\n\n  constructor(\n    private _ngZone: NgZone,\n    private registry: TestabilityRegistry,\n    @Inject(TESTABILITY_GETTER) testabilityGetter: GetTestability,\n  ) {\n    // If there was no Testability logic registered in the global scope\n    // before, register the current testability getter as a global one.\n    if (!_testabilityGetter) {\n      setTestabilityGetter(testabilityGetter);\n      testabilityGetter.addToWindow(registry);\n    }\n    this._watchAngularEvents();\n    _ngZone.run(() => {\n      this.taskTrackingZone =\n        typeof Zone == 'undefined' ? null : Zone.current.get('TaskTrackingZone');\n    });\n  }\n\n  private _watchAngularEvents(): void {\n    this._ngZone.onUnstable.subscribe({\n      next: () => {\n        this._isZoneStable = false;\n      },\n    });\n\n    this._ngZone.runOutsideAngular(() => {\n      this._ngZone.onStable.subscribe({\n        next: () => {\n          NgZone.assertNotInAngularZone();\n          queueMicrotask(() => {\n            this._isZoneStable = true;\n            this._runCallbacksIfReady();\n          });\n        },\n      });\n    });\n  }\n\n  /**\n   * Whether an associated application is stable\n   */\n  isStable(): boolean {\n    return this._isZoneStable && !this._ngZone.hasPendingMacrotasks;\n  }\n\n  private _runCallbacksIfReady(): void {\n    if (this.isStable()) {\n      // Schedules the call backs in a new frame so that it is always async.\n      queueMicrotask(() => {\n        while (this._callbacks.length !== 0) {\n          let cb = this._callbacks.pop()!;\n          clearTimeout(cb.timeoutId);\n          cb.doneCb();\n        }\n      });\n    } else {\n      // Still not stable, send updates.\n      let pending = this.getPendingTasks();\n      this._callbacks = this._callbacks.filter((cb) => {\n        if (cb.updateCb && cb.updateCb(pending)) {\n          clearTimeout(cb.timeoutId);\n          return false;\n        }\n\n        return true;\n      });\n    }\n  }\n\n  private getPendingTasks(): PendingMacrotask[] {\n    if (!this.taskTrackingZone) {\n      return [];\n    }\n\n    // Copy the tasks data so that we don't leak tasks.\n    return this.taskTrackingZone.macroTasks.map((t: Task) => {\n      return {\n        source: t.source,\n        // From TaskTrackingZone:\n        // https://github.com/angular/zone.js/blob/master/lib/zone-spec/task-tracking.ts#L40\n        creationLocation: (t as any).creationLocation as Error,\n        data: t.data,\n      };\n    });\n  }\n\n  private addCallback(cb: Function, timeout?: number, updateCb?: Function) {\n    let timeoutId: any = -1;\n    if (timeout && timeout > 0) {\n      timeoutId = setTimeout(() => {\n        this._callbacks = this._callbacks.filter((cb) => cb.timeoutId !== timeoutId);\n        cb();\n      }, timeout);\n    }\n    this._callbacks.push(<WaitCallback>{doneCb: cb, timeoutId: timeoutId, updateCb: updateCb});\n  }\n\n  /**\n   * Wait for the application to be stable with a timeout. If the timeout is reached before that\n   * happens, the callback receives a list of the macro tasks that were pending, otherwise null.\n   *\n   * @param doneCb The callback to invoke when Angular is stable or the timeout expires\n   *    whichever comes first.\n   * @param timeout Optional. The maximum time to wait for Angular to become stable. If not\n   *    specified, whenStable() will wait forever.\n   * @param updateCb Optional. If specified, this callback will be invoked whenever the set of\n   *    pending macrotasks changes. If this callback returns true doneCb will not be invoked\n   *    and no further updates will be issued.\n   */\n  whenStable(doneCb: Function, timeout?: number, updateCb?: Function): void {\n    if (updateCb && !this.taskTrackingZone) {\n      throw new Error(\n        'Task tracking zone is required when passing an update callback to ' +\n          'whenStable(). Is \"zone.js/plugins/task-tracking\" loaded?',\n      );\n    }\n    this.addCallback(doneCb, timeout, updateCb);\n    this._runCallbacksIfReady();\n  }\n\n  /**\n   * Registers an application with a testability hook so that it can be tracked.\n   * @param token token of application, root element\n   *\n   * @internal\n   */\n  registerApplication(token: any) {\n    this.registry.registerApplication(token, this);\n  }\n\n  /**\n   * Unregisters an application.\n   * @param token token of application, root element\n   *\n   * @internal\n   */\n  unregisterApplication(token: any) {\n    this.registry.unregisterApplication(token);\n  }\n\n  /**\n   * Find providers by name\n   * @param using The root element to search from\n   * @param provider The name of binding variable\n   * @param exactMatch Whether using exactMatch\n   */\n  findProviders(using: any, provider: string, exactMatch: boolean): any[] {\n    // TODO(juliemr): implement.\n    return [];\n  }\n}\n\n/**\n * A global registry of {@link Testability} instances for specific elements.\n * @publicApi\n */\n@Injectable({providedIn: 'platform'})\nexport class TestabilityRegistry {\n  /** @internal */\n  _applications = new Map<any, Testability>();\n\n  /**\n   * Registers an application with a testability hook so that it can be tracked\n   * @param token token of application, root element\n   * @param testability Testability hook\n   */\n  registerApplication(token: any, testability: Testability) {\n    this._applications.set(token, testability);\n  }\n\n  /**\n   * Unregisters an application.\n   * @param token token of application, root element\n   */\n  unregisterApplication(token: any) {\n    this._applications.delete(token);\n  }\n\n  /**\n   * Unregisters all applications\n   */\n  unregisterAllApplications() {\n    this._applications.clear();\n  }\n\n  /**\n   * Get a testability hook associated with the application\n   * @param elem root element\n   */\n  getTestability(elem: any): Testability | null {\n    return this._applications.get(elem) || null;\n  }\n\n  /**\n   * Get all registered testabilities\n   */\n  getAllTestabilities(): Testability[] {\n    return Array.from(this._applications.values());\n  }\n\n  /**\n   * Get all registered applications(root elements)\n   */\n  getAllRootElements(): any[] {\n    return Array.from(this._applications.keys());\n  }\n\n  /**\n   * Find testability of a node in the Tree\n   * @param elem node\n   * @param findInAncestors whether finding testability in ancestors if testability was not found in\n   * current node\n   */\n  findTestabilityInTree(elem: Node, findInAncestors: boolean = true): Testability | null {\n    return _testabilityGetter?.findTestabilityInTree(this, elem, findInAncestors) ?? null;\n  }\n}\n\n/**\n * Adapter interface for retrieving the `Testability` service associated for a\n * particular context.\n *\n * @publicApi\n */\nexport interface GetTestability {\n  addToWindow(registry: TestabilityRegistry): void;\n  findTestabilityInTree(\n    registry: TestabilityRegistry,\n    elem: any,\n    findInAncestors: boolean,\n  ): Testability | null;\n}\n\n/**\n * Set the {@link GetTestability} implementation used by the Angular testing framework.\n * @publicApi\n */\nexport function setTestabilityGetter(getter: GetTestability): void {\n  _testabilityGetter = getter;\n}\n\nlet _testabilityGetter: GetTestability | undefined;\n"]}