How can you handle form validation testing in Angular?

Short answer: Test form validity by setting control values and checking validity state.

Example code

it('should mark form invalid when empty', () => { component.form.controls['email'].setValue(''); expect(component.form.valid).toBeFalse(); }); it('should mark form valid with correct email', () => { component.form.controls['email'].setValue('test@example.com'); expect(component.form.valid).toBeTrue(); }); Advanced Angular Topics

Real-world example (ShopNest)

ShopNest admin can be built in Angular with modules/components, services for API calls, and reactive forms for product edit.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.