Function actAsync

packages/forms/signals/test/web/template_fvc.spec.ts:465–471

(fn: () => T)

// Async version that waits for application to stabilize (for NgModel's async value updates)
async function actAsync<T>(fn: () => T): Promise<T> {
  try {
    return fn();
  } finally {
    await TestBed.inject(ApplicationRef).whenStable();
  }
}