Testing Input() properties in Angular

folder-name.component.spec.ts

it("should set input property 'text' equal to folder title in <custom-inline-edit/>", () => {
    // arrange
    component.folder = folder;
    fixture.detectChanges();

    // act
    let inlineEditElement: DebugElement = editDescriptionElement = fixture.debugElement.query(
        By.css("custom-inline-edit"));

    // assert
    expect(inlineEditElement.nativeElement.attributes["ng-reflect-text"].value).
        toBe(folder.title);
  });