Class ReadonlyTestCmp

packages/forms/signals/test/web/form_field.spec.ts:4933–4943

    }

    @Component({
      template: ` <my-input [formField]="f" /> `,
      imports: [CustomInput, FormField],
    })
    class ReadonlyTestCmp {
      myInput = viewChild.required<CustomInput>(CustomInput);
      data = signal('');
      f = form(this.data, (p) => {
        disabled(p, {when: () => 'Currently unavailable'});
      });
    }

    const comp = act(() => TestBed.createComponent(ReadonlyTestCmp)).componentInstance;