@angular/cdk
Version:
Angular Material Component Development Kit
129 lines • 15.8 kB
JavaScript
/**
* @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
*/
import { __awaiter, __extends, __generator } from "tslib";
import { HarnessEnvironment } from '@angular/cdk/testing';
import { flush } from '@angular/core/testing';
import { takeWhile } from 'rxjs/operators';
import { TaskStateZoneInterceptor } from './task-state-zone-interceptor';
import { UnitTestElement } from './unit-test-element';
/** A `HarnessEnvironment` implementation for Angular's Testbed. */
var TestbedHarnessEnvironment = /** @class */ (function (_super) {
__extends(TestbedHarnessEnvironment, _super);
function TestbedHarnessEnvironment(rawRootElement, _fixture) {
var _this = _super.call(this, rawRootElement) || this;
_this._fixture = _fixture;
_this._destroyed = false;
_this._taskState = TaskStateZoneInterceptor.setup();
_fixture.componentRef.onDestroy(function () { return _this._destroyed = true; });
return _this;
}
/** Creates a `HarnessLoader` rooted at the given fixture's root element. */
TestbedHarnessEnvironment.loader = function (fixture) {
return new TestbedHarnessEnvironment(fixture.nativeElement, fixture);
};
/**
* Creates a `HarnessLoader` at the document root. This can be used if harnesses are
* located outside of a fixture (e.g. overlays appended to the document body).
*/
TestbedHarnessEnvironment.documentRootLoader = function (fixture) {
return new TestbedHarnessEnvironment(document.body, fixture);
};
/**
* Creates an instance of the given harness type, using the fixture's root element as the
* harness's host element. This method should be used when creating a harness for the root element
* of a fixture, as components do not have the correct selector when they are created as the root
* of the fixture.
*/
TestbedHarnessEnvironment.harnessForFixture = function (fixture, harnessType) {
return __awaiter(this, void 0, void 0, function () {
var environment;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
environment = new TestbedHarnessEnvironment(fixture.nativeElement, fixture);
return [4 /*yield*/, environment.forceStabilize()];
case 1:
_a.sent();
return [2 /*return*/, environment.createComponentHarness(harnessType, fixture.nativeElement)];
}
});
});
};
TestbedHarnessEnvironment.prototype.forceStabilize = function () {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (this._destroyed) {
throw Error('Harness is attempting to use a fixture that has already been destroyed.');
}
this._fixture.detectChanges();
return [4 /*yield*/, this._fixture.whenStable()];
case 1:
_a.sent();
return [2 /*return*/];
}
});
});
};
TestbedHarnessEnvironment.prototype.waitForTasksOutsideAngular = function () {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
// If we run in the fake async zone, we run "flush" to run any scheduled tasks. This
// ensures that the harnesses behave inside of the FakeAsyncTestZone similar to the
// "AsyncTestZone" and the root zone (i.e. neither fakeAsync or async). Note that we
// cannot just rely on the task state observable to become stable because the state will
// never change. This is because the task queue will be only drained if the fake async
// zone is being flushed.
if (Zone.current.get('FakeAsyncTestZoneSpec')) {
flush();
}
// Wait until the task queue has been drained and the zone is stable. Note that
// we cannot rely on "fixture.whenStable" since it does not catch tasks scheduled
// outside of the Angular zone. For test harnesses, we want to ensure that the
// app is fully stabilized and therefore need to use our own zone interceptor.
return [4 /*yield*/, this._taskState.pipe(takeWhile(function (state) { return !state.stable; })).toPromise()];
case 1:
// Wait until the task queue has been drained and the zone is stable. Note that
// we cannot rely on "fixture.whenStable" since it does not catch tasks scheduled
// outside of the Angular zone. For test harnesses, we want to ensure that the
// app is fully stabilized and therefore need to use our own zone interceptor.
_a.sent();
return [2 /*return*/];
}
});
});
};
TestbedHarnessEnvironment.prototype.getDocumentRoot = function () {
return document.body;
};
TestbedHarnessEnvironment.prototype.createTestElement = function (element) {
var _this = this;
return new UnitTestElement(element, function () { return _this.forceStabilize(); });
};
TestbedHarnessEnvironment.prototype.createEnvironment = function (element) {
return new TestbedHarnessEnvironment(element, this._fixture);
};
TestbedHarnessEnvironment.prototype.getAllRawElements = function (selector) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.forceStabilize()];
case 1:
_a.sent();
return [2 /*return*/, Array.from(this.rawRootElement.querySelectorAll(selector))];
}
});
});
};
return TestbedHarnessEnvironment;
}(HarnessEnvironment));
export { TestbedHarnessEnvironment };
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This can be used if harnesses are\n   * located outside of a fixture (e.g. overlays appended to the document body).\n   */\n  static documentRootLoader(fixture: ComponentFixture<unknown>): HarnessLoader {\n    return new TestbedHarnessEnvironment(document.body, fixture);\n  }\n\n  /**\n   * Creates an instance of the given harness type, using the fixture's root element as the\n   * harness's host element. This method should be used when creating a harness for the root element\n   * of a fixture, as components do not have the correct selector when they are created as the root\n   * of the fixture.\n   */\n  static async harnessForFixture<T extends ComponentHarness>(\n      fixture: ComponentFixture<unknown>, harnessType: ComponentHarnessConstructor<T>): Promise<T> {\n    const environment = new TestbedHarnessEnvironment(fixture.nativeElement, fixture);\n    await environment.forceStabilize();\n    return environment.createComponentHarness(harnessType, fixture.nativeElement);\n  }\n\n  async forceStabilize(): Promise<void> {\n    if (this._destroyed) {\n      throw Error('Harness is attempting to use a fixture that has already been destroyed.');\n    }\n\n    this._fixture.detectChanges();\n    await this._fixture.whenStable();\n  }\n\n  async waitForTasksOutsideAngular(): Promise<void> {\n    // If we run in the fake async zone, we run \"flush\" to run any scheduled tasks. This\n    // ensures that the harnesses behave inside of the FakeAsyncTestZone similar to the\n    // \"AsyncTestZone\" and the root zone (i.e. neither fakeAsync or async). Note that we\n    // cannot just rely on the task state observable to become stable because the state will\n    // never change. This is because the task queue will be only drained if the fake async\n    // zone is being flushed.\n    if (Zone!.current.get('FakeAsyncTestZoneSpec')) {\n      flush();\n    }\n\n    // Wait until the task queue has been drained and the zone is stable. Note that\n    // we cannot rely on \"fixture.whenStable\" since it does not catch tasks scheduled\n    // outside of the Angular zone. For test harnesses, we want to ensure that the\n    // app is fully stabilized and therefore need to use our own zone interceptor.\n    await this._taskState.pipe(takeWhile(state => !state.stable)).toPromise();\n  }\n\n  protected getDocumentRoot(): Element {\n    return document.body;\n  }\n\n  protected createTestElement(element: Element): TestElement {\n    return new UnitTestElement(element, () => this.forceStabilize());\n  }\n\n  protected createEnvironment(element: Element): HarnessEnvironment<Element> {\n    return new TestbedHarnessEnvironment(element, this._fixture);\n  }\n\n  protected async getAllRawElements(selector: string): Promise<Element[]> {\n    await this.forceStabilize();\n    return Array.from(this.rawRootElement.querySelectorAll(selector));\n  }\n}\n"]}