A required input is accessed before a value is set

[undsoft]

This for someone coming from google when trying to diagnose why they may get this error in Jest when passing props:

spectator = createComponent({  
  props: {
    myRequiredInput: 'something',
  }
});

[undsoft]

The solution is to update jest-preset-angular.

[ShacharHarshuv]

I'm on spectator 19.3.0, angular 19.0.6, and I upgraded to jest-preset-angular latest version and I still have that issue reproducing

[ShacharHarshuv]

Update: apparently I had this in the providers of the createComponentFactory:

{
  provide: ComponentFixtureAutoDetect,
  useValue: true,
},

This doesn't seem to work well with required inputs. Removing it an using detect changes manually where needed solved the issue.

Posting this so hopefully it helps someone.