Function attachEventsLogger

packages/forms/test/form_group_spec.ts:2244–2254

(
        control: AbstractControl,
        log: string[],
        controlName?: string,
      )

    describe('emit `statusChanges` and `valueChanges` with/without async/sync validators', () => {
      const attachEventsLogger = (
        control: AbstractControl,
        log: string[],
        controlName?: string,
      ) => {
        const name = controlName ? ` (${controlName})` : '';
        control.statusChanges.subscribe((status) => log.push(`status${name}: ${status}`));
        control.valueChanges.subscribe((value) =>
          log.push(`value${name}: ${JSON.stringify(value)}`),
        );
      };

      describe('stand alone controls', () => {
        it('should run the async validator on stand alone controls and set status to `INVALID`', async () => {