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У меня есть тривиальный модульный тест, который проходит, но выдает ошибку «Жгут пытается использовать приспособление, которое уже было уничтожено» при запуске ng test --watch=false . Происходит ли это потому, что я размещаю свой компонент внутри lt;ng-templategt; ? Кто-нибудь знает, как устранить эту ошибку?

Спецификация менукомпонента

 describe("MenuComponent", () =gt; {  let testHostFixture: ComponentFixturelt;TestHostComponentgt;;  let myMenuHarness: MenuHarness;   beforeEach(  waitForAsync(() =gt; {  TestBed.configureTestingModule({  declarations: [...],  imports: [...],  providers: [...],  }).compileComponents();  })  );   beforeEach(async () =gt; {  testHostFixture = TestBed.createComponent(TestHostComponent);  myMenuHarness = await TestbedHarnessEnvironment.harnessForFixture(  testHostFixture,  MenuHarness  );  testHostFixture.detectChanges();  });   describe("simple test", () =gt; {  it("should pass", async () =gt; {  await myMenuHarness.openMenu();  expect(true);  });  });   @Component({  selector: `my-test-host-component`,  template: `lt;kendo-grid ...gt;  lt;ng-template kendoGridColumnMenuTemplate let-service="service"gt;  lt;app-my-menu [service]="service"gt;lt;/app-my-menugt;  lt;/ng-templategt;  lt;kendo-grid-column ... gt;lt;/kendo-grid-columngt;  lt;/kendo-gridgt;`,  })  class TestHostComponent {  @ViewChild(MenuComponent)  public menu?: MenuComponent;  } });  

МенуХарнесс

 public async openColumnMenu() {  const element = await this.queryColumnMenuButton();  element?.click(); }  

Выход

 Error: Harness is attempting to use a fixture that has already been destroyed.  at http://localhost:9877/_karma_webpack_/webpack:/node_modules/@angular/cdk/fesm2020/testing/testbed.mjs:720:23  at Generator.next (lt;anonymousgt;)  at asyncGeneratorStep (http://localhost:9877/_karma_webpack_/webpack:/node_modules/@angular-devkit/build-angular/node_modules/@babel/runtime/helpers/esm/asyncToGenerator.js:3:1)  at _next (http://localhost:9877/_karma_webpack_/webpack:/node_modules/@angular-devkit/build-angular/node_modules/@babel/runtime/helpers/esm/asyncToGenerator.js:25:1)   at http://localhost:9877/_karma_webpack_/webpack:/node_modules/@angular-devkit/build-angular/node_modules/@babel/runtime/helpers/esm/asyncToGenerator.js:32:1  at new ZoneAwarePromise (http://localhost:9877/_karma_webpack_/webpack:/node_modules/zone.js/dist/zone.js:1340:1)  at http://localhost:9877/_karma_webpack_/webpack:/node_modules/@angular-devkit/build-angular/node_modules/@babel/runtime/helpers/esm/asyncToGenerator.js:21:1  at TestbedHarnessEnvironment.forceStabilize (http://localhost:9877/_karma_webpack_/webpack:/node_modules/@angular/cdk/fesm2020/testing/testbed.mjs:717:28)  at UnitTestElement._stabilize (http://localhost:9877/_karma_webpack_/webpack:/node_modules/@angular/cdk/fesm2020/testing/testbed.mjs:751:56)  at http://localhost:9877/_karma_webpack_/webpack:/node_modules/@angular/cdk/fesm2020/testing/testbed.mjs:449:20, 'Error: Harness is attempting to use a fixture that has already been destroyed.  at http://localhost:9877/_karma_webpack_/webpack:/node_modules/@angular/cdk/fesm2020/testing/testbed.mjs:720:23  at Generator.next (lt;anonymousgt;)  at asyncGeneratorStep (http://localhost:9877/_karma_webpack_/webpack:/node_modules/@angular-devkit/build-angular/node_modules/@babel/runtime/helpers/esm/asyncToGenerator.js:3:1)  at _next (http://localhost:9877/_karma_webpack_/webpack:/node_modules/@angular-devkit/build-angular/node_modules/@babel/runtime/helpers/esm/asyncToGenerator.js:25:1)   at http://localhost:9877/_karma_webpack_/webpack:/node_modules/@angular-devkit/build-angular/node_modules/@babel/runtime/helpers/esm/asyncToGenerator.js:32:1  at new ZoneAwarePromise (http://localhost:9877/_karma_webpack_/webpack:/node_modules/zone.js/dist/zone.js:1340:1)  at http://localhost:9877/_karma_webpack_/webpack:/node_modules/@angular-devkit/build-angular/node_modules/@babel/runtime/helpers/esm/asyncToGenerator.js:21:1  at TestbedHarnessEnvironment.forceStabilize (http://localhost:9877/_karma_webpack_/webpack:/node_modules/@angular/cdk/fesm2020/testing/testbed.mjs:717:28)  at UnitTestElement._stabilize (http://localhost:9877/_karma_webpack_/webpack:/node_modules/@angular/cdk/fesm2020/testing/testbed.mjs:751:56)  at http://localhost:9877/_karma_webpack_/webpack:/node_modules/@angular/cdk/fesm2020/testing/testbed.mjs:449:20'