Closing the loop here: Jan ended up adding some Selenium-based tests
for the Javascript Admin UI in this PR:
https://github.com/apache/solr/pull/4738

Jason

On Thu, Aug 13, 2026 at 3:47 PM Chris Hostetter
<[email protected]> wrote:
>
>
> : We continue to support the exact level of Admin UI testing as we’ve had
> : for the past few major versions of Solr ;-).
> :
> : Honestly, for the Admin UI, and you won’t love the answer…. “Please
> : start solr from main and solr on my code branch and compare them using
> : Playwrite”.  And it works.  Even when I can’t figure out how to spell
> : Playwright.
>
> and that's a totally fine answer for people who are already modifying the
> Admin UI ... i'm just trying to point out that if people are feeling free
> to modify the V2 APIs -- w/o strong concern for backcompat because they
> are experimental -- and trusting that tests will tell them if they've
> broken some client assumption in SolrJ or the SolrCLI, that won't help
> catch sitautions where someone might make a change to a V2 API that breaks
> the UI.
>
> Obviously the same risk exists for the "older" APIs the UI uses -- but
> people (hopefully) are being particularly cautions about making
> back-compat breaks in those legacy APIs because so many things out of our
> control consume them.
>
>
> : It wouldn’t take much to generate a bunch of Admin UI tests, but since
> : that whole UI is not changing much (if any), and we want to move to the
> : new Solr UI, I haven’t seen a strong need to beef up testing, in
> : comparison to other priorities.
>
> I assumed you were talking about "new" UI ... i was asking about tests
> for whatever UI you're planning on modifing to use the V2 stuff :)
>
>
> -Hoss
> http://www.lucidworks.com/
>
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