Hi @i61t9 (i61t9)​ , Thank you for reaching out to the Okta Community! 

To answer your questions: 

1. There currently is not explicit test beyond setting up and test user an attempting the use of known breached passwords. I expect the test result is dependent of the data set provided by the third parties. - You can suggest a this as a feature enhancement on the Okta Community page by going to the Community→ Ideas tab. Features suggested in our community are reviewed and can be voted and commented on by other members. High popularity will increase the likelihood of it being picked up by the Product Team and it being implemented. More details here.
2. You should be able to disable the features on demand via a ticket to the Support team. 
3. I recommend opening a support ticket to have our team confirm if the information in the documentation is correct. As far as I know, in the case of AD users that leverage Delegated Authentication, the password expiration is handled via AD side settings not the Okta Password policies.  

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Hope my answer helps! 

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