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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.io/license */ const _Zone = typeof Zone !== 'undefined' ? Zone : null; const fakeAsyncTestModule = _Zone && _Zone[_Zone.__symbol__('fakeAsyncTest')]; const fakeAsyncTestModuleNotLoadedErrorMessage = `zone-testing.js is needed for the fakeAsync() test helper but could not be found. Please make sure that your environment includes zone.js/testing`; /** * Clears out the shared fake async zone for a test. * To be called in a global `beforeEach`. * * @publicApi */ export function resetFakeAsyncZone() { if (fakeAsyncTestModule) { return fakeAsyncTestModule.resetFakeAsyncZone(); } throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage); } export function resetFakeAsyncZoneIfExists() { if (fakeAsyncTestModule) { fakeAsyncTestModule.resetFakeAsyncZone(); } } /** * Wraps a function to be executed in the `fakeAsync` zone: * - Microtasks are manually executed by calling `flushMicrotasks()`. * - Timers are synchronous; `tick()` simulates the asynchronous passage of time. * * If there are any pending timers at the end of the function, an exception is thrown. * * Can be used to wrap `inject()` calls. * * @param fn The function that you want to wrap in the `fakeAsync` zone. * * @usageNotes * ### Example * * {@example core/testing/ts/fake_async.ts region='basic'} * * * @returns The function wrapped to be executed in the `fakeAsync` zone. * Any arguments passed when calling this returned function will be passed through to the `fn` * function in the parameters when it is called. * * @publicApi */ export function fakeAsync(fn) { if (fakeAsyncTestModule) { return fakeAsyncTestModule.fakeAsync(fn); } throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage); } /** * Simulates the asynchronous passage of time for the timers in the `fakeAsync` zone. * * The microtasks queue is drained at the very start of this function and after any timer callback * has been executed. * * @param millis The number of milliseconds to advance the virtual timer. * @param tickOptions The options to pass to the `tick()` function. * * @usageNotes * * The `tick()` option is a flag called `processNewMacroTasksSynchronously`, * which determines whether or not to invoke new macroTasks. * * If you provide a `tickOptions` object, but do not specify a * `processNewMacroTasksSynchronously` property (`tick(100, {})`), * then `processNewMacroTasksSynchronously` defaults to true. * * If you omit the `tickOptions` parameter (`tick(100))`), then * `tickOptions` defaults to `{processNewMacroTasksSynchronously: true}`. * * ### Example * * {@example core/testing/ts/fake_async.ts region='basic'} * * The following example includes a nested timeout (new macroTask), and * the `tickOptions` parameter is allowed to default. In this case, * `processNewMacroTasksSynchronously` defaults to true, and the nested * function is executed on each tick. * * ``` * it ('test with nested setTimeout', fakeAsync(() => { * let nestedTimeoutInvoked = false; * function funcWithNestedTimeout() { * setTimeout(() => { * nestedTimeoutInvoked = true; * }); * }; * setTimeout(funcWithNestedTimeout); * tick(); * expect(nestedTimeoutInvoked).toBe(true); * })); * ``` * * In the following case, `processNewMacroTasksSynchronously` is explicitly * set to false, so the nested timeout function is not invoked. * * ``` * it ('test with nested setTimeout', fakeAsync(() => { * let nestedTimeoutInvoked = false; * function funcWithNestedTimeout() { * setTimeout(() => { * nestedTimeoutInvoked = true; * }); * }; * setTimeout(funcWithNestedTimeout); * tick(0, {processNewMacroTasksSynchronously: false}); * expect(nestedTimeoutInvoked).toBe(false); * })); * ``` * * * @publicApi */ export function tick(millis = 0, tickOptions = { processNewMacroTasksSynchronously: true, }) { if (fakeAsyncTestModule) { return fakeAsyncTestModule.tick(millis, tickOptions); } throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage); } /** * Flushes any pending microtasks and simulates the asynchronous passage of time for the timers in * the `fakeAsync` zone by * draining the macrotask queue until it is empty. * * @param maxTurns The maximum number of times the scheduler attempts to clear its queue before * throwing an error. * @returns The simulated time elapsed, in milliseconds. * * @publicApi */ export function flush(maxTurns) { if (fakeAsyncTestModule) { return fakeAsyncTestModule.flush(maxTurns); } throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage); } /** * Discard all remaining periodic tasks. * * @publicApi */ export function discardPeriodicTasks() { if (fakeAsyncTestModule) { return fakeAsyncTestModule.discardPeriodicTasks(); } throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage); } /** * Flush any pending microtasks. * * @publicApi */ export function flushMicrotasks() { if (fakeAsyncTestModule) { return fakeAsyncTestModule.flushMicrotasks(); } throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage); } //# sourceMappingURL=data:application/json;base64,{"version":3,"file":"fake_async.js","sourceRoot":"","sources":["../../../../../../../packages/core/testing/src/fake_async.ts"],"names":[],"mappings":"AAAA;;;;;;GAMG;AACH,MAAM,KAAK,GAAQ,OAAO,IAAI,KAAK,WAAW,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,CAAC;AAC7D,MAAM,mBAAmB,GAAG,KAAK,IAAI,KAAK,CAAC,KAAK,CAAC,UAAU,CAAC,eAAe,CAAC,CAAC,CAAC;AAE9E,MAAM,wCAAwC,GAAG;wEACuB,CAAC;AAEzE;;;;;GAKG;AACH,MAAM,UAAU,kBAAkB;IAChC,IAAI,mBAAmB,EAAE,CAAC;QACxB,OAAO,mBAAmB,CAAC,kBAAkB,EAAE,CAAC;IAClD,CAAC;IACD,MAAM,IAAI,KAAK,CAAC,wCAAwC,CAAC,CAAC;AAC5D,CAAC;AAED,MAAM,UAAU,0BAA0B;IACxC,IAAI,mBAAmB,EAAE,CAAC;QACxB,mBAAmB,CAAC,kBAAkB,EAAE,CAAC;IAC3C,CAAC;AACH,CAAC;AAED;;;;;;;;;;;;;;;;;;;;;;GAsBG;AACH,MAAM,UAAU,SAAS,CAAC,EAAY;IACpC,IAAI,mBAAmB,EAAE,CAAC;QACxB,OAAO,mBAAmB,CAAC,SAAS,CAAC,EAAE,CAAC,CAAC;IAC3C,CAAC;IACD,MAAM,IAAI,KAAK,CAAC,wCAAwC,CAAC,CAAC;AAC5D,CAAC;AAED;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;GA+DG;AACH,MAAM,UAAU,IAAI,CAClB,SAAiB,CAAC,EAClB,cAA4D;IAC1D,iCAAiC,EAAE,IAAI;CACxC;IAED,IAAI,mBAAmB,EAAE,CAAC;QACxB,OAAO,mBAAmB,CAAC,IAAI,CAAC,MAAM,EAAE,WAAW,CAAC,CAAC;IACvD,CAAC;IACD,MAAM,IAAI,KAAK,CAAC,wCAAwC,CAAC,CAAC;AAC5D,CAAC;AAED;;;;;;;;;;GAUG;AACH,MAAM,UAAU,KAAK,CAAC,QAAiB;IACrC,IAAI,mBAAmB,EAAE,CAAC;QACxB,OAAO,mBAAmB,CAAC,KAAK,CAAC,QAAQ,CAAC,CAAC;IAC7C,CAAC;IACD,MAAM,IAAI,KAAK,CAAC,wCAAwC,CAAC,CAAC;AAC5D,CAAC;AAED;;;;GAIG;AACH,MAAM,UAAU,oBAAoB;IAClC,IAAI,mBAAmB,EAAE,CAAC;QACxB,OAAO,mBAAmB,CAAC,oBAAoB,EAAE,CAAC;IACpD,CAAC;IACD,MAAM,IAAI,KAAK,CAAC,wCAAwC,CAAC,CAAC;AAC5D,CAAC;AAED;;;;GAIG;AACH,MAAM,UAAU,eAAe;IAC7B,IAAI,mBAAmB,EAAE,CAAC;QACxB,OAAO,mBAAmB,CAAC,eAAe,EAAE,CAAC;IAC/C,CAAC;IACD,MAAM,IAAI,KAAK,CAAC,wCAAwC,CAAC,CAAC;AAC5D,CAAC","sourcesContent":["/**\n * @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.io/license\n */\nconst _Zone: any = typeof Zone !== 'undefined' ? Zone : null;\nconst fakeAsyncTestModule = _Zone && _Zone[_Zone.__symbol__('fakeAsyncTest')];\n\nconst fakeAsyncTestModuleNotLoadedErrorMessage = `zone-testing.js is needed for the fakeAsync() test helper but could not be found.\n        Please make sure that your environment includes zone.js/testing`;\n\n/**\n * Clears out the shared fake async zone for a test.\n * To be called in a global `beforeEach`.\n *\n * @publicApi\n */\nexport function resetFakeAsyncZone(): void {\n  if (fakeAsyncTestModule) {\n    return fakeAsyncTestModule.resetFakeAsyncZone();\n  }\n  throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage);\n}\n\nexport function resetFakeAsyncZoneIfExists(): void {\n  if (fakeAsyncTestModule) {\n    fakeAsyncTestModule.resetFakeAsyncZone();\n  }\n}\n\n/**\n * Wraps a function to be executed in the `fakeAsync` zone:\n * - Microtasks are manually executed by calling `flushMicrotasks()`.\n * - Timers are synchronous; `tick()` simulates the asynchronous passage of time.\n *\n * If there are any pending timers at the end of the function, an exception is thrown.\n *\n * Can be used to wrap `inject()` calls.\n *\n * @param fn The function that you want to wrap in the `fakeAsync` zone.\n *\n * @usageNotes\n * ### Example\n *\n * {@example core/testing/ts/fake_async.ts region='basic'}\n *\n *\n * @returns The function wrapped to be executed in the `fakeAsync` zone.\n * Any arguments passed when calling this returned function will be passed through to the `fn`\n * function in the parameters when it is called.\n *\n * @publicApi\n */\nexport function fakeAsync(fn: Function): (...args: any[]) => any {\n  if (fakeAsyncTestModule) {\n    return fakeAsyncTestModule.fakeAsync(fn);\n  }\n  throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage);\n}\n\n/**\n * Simulates the asynchronous passage of time for the timers in the `fakeAsync` zone.\n *\n * The microtasks queue is drained at the very start of this function and after any timer callback\n * has been executed.\n *\n * @param millis The number of milliseconds to advance the virtual timer.\n * @param tickOptions The options to pass to the `tick()` function.\n *\n * @usageNotes\n *\n * The `tick()` option is a flag called `processNewMacroTasksSynchronously`,\n * which determines whether or not to invoke new macroTasks.\n *\n * If you provide a `tickOptions` object, but do not specify a\n * `processNewMacroTasksSynchronously` property (`tick(100, {})`),\n * then `processNewMacroTasksSynchronously` defaults to true.\n *\n * If you omit the `tickOptions` parameter (`tick(100))`), then\n * `tickOptions` defaults to `{processNewMacroTasksSynchronously: true}`.\n *\n * ### Example\n *\n * {@example core/testing/ts/fake_async.ts region='basic'}\n *\n * The following example includes a nested timeout (new macroTask), and\n * the `tickOptions` parameter is allowed to default. In this case,\n * `processNewMacroTasksSynchronously` defaults to true, and the nested\n * function is executed on each tick.\n *\n * ```\n * it ('test with nested setTimeout', fakeAsync(() => {\n *   let nestedTimeoutInvoked = false;\n *   function funcWithNestedTimeout() {\n *     setTimeout(() => {\n *       nestedTimeoutInvoked = true;\n *     });\n *   };\n *   setTimeout(funcWithNestedTimeout);\n *   tick();\n *   expect(nestedTimeoutInvoked).toBe(true);\n * }));\n * ```\n *\n * In the following case, `processNewMacroTasksSynchronously` is explicitly\n * set to false, so the nested timeout function is not invoked.\n *\n * ```\n * it ('test with nested setTimeout', fakeAsync(() => {\n *   let nestedTimeoutInvoked = false;\n *   function funcWithNestedTimeout() {\n *     setTimeout(() => {\n *       nestedTimeoutInvoked = true;\n *     });\n *   };\n *   setTimeout(funcWithNestedTimeout);\n *   tick(0, {processNewMacroTasksSynchronously: false});\n *   expect(nestedTimeoutInvoked).toBe(false);\n * }));\n * ```\n *\n *\n * @publicApi\n */\nexport function tick(\n  millis: number = 0,\n  tickOptions: {processNewMacroTasksSynchronously: boolean} = {\n    processNewMacroTasksSynchronously: true,\n  },\n): void {\n  if (fakeAsyncTestModule) {\n    return fakeAsyncTestModule.tick(millis, tickOptions);\n  }\n  throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage);\n}\n\n/**\n * Flushes any pending microtasks and simulates the asynchronous passage of time for the timers in\n * the `fakeAsync` zone by\n * draining the macrotask queue until it is empty.\n *\n * @param maxTurns The maximum number of times the scheduler attempts to clear its queue before\n *     throwing an error.\n * @returns The simulated time elapsed, in milliseconds.\n *\n * @publicApi\n */\nexport function flush(maxTurns?: number): number {\n  if (fakeAsyncTestModule) {\n    return fakeAsyncTestModule.flush(maxTurns);\n  }\n  throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage);\n}\n\n/**\n * Discard all remaining periodic tasks.\n *\n * @publicApi\n */\nexport function discardPeriodicTasks(): void {\n  if (fakeAsyncTestModule) {\n    return fakeAsyncTestModule.discardPeriodicTasks();\n  }\n  throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage);\n}\n\n/**\n * Flush any pending microtasks.\n *\n * @publicApi\n */\nexport function flushMicrotasks(): void {\n  if (fakeAsyncTestModule) {\n    return fakeAsyncTestModule.flushMicrotasks();\n  }\n  throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage);\n}\n"]}