Handle clearing of controlled fields

[kettanaito]

Environment

• react-advanaced-form: 1.4.1

What

Need to properly handle controlled fields clear.

Why

Although there is the onClear callback function exposed to clear the values of the controlled fields, after that it validated the fields as invalid. That is obvious, since clearing the controlled value invokes onChange event, and that results into validation of the field. That is the correct chain of events, but the unexpected one for clearing scenario.

How

Reset has a similar functionality, where proper validity status of the fields is achieved by explicit validation with the custom predicate function supplied. However, I am not sure if reset of controlled fields was properly tested.

Roadmap

• Provide integration test cases for controlled fields reset
• Figure out a way, or document the limitations of clearing controlled fields

[kettanaito]

Needs to be verified the issue relevance by introducing a respective integration test branch.