test: check for output to stdout in TestShell test #33951

1. 
   theStack commented at 3:55 pm on November 26, 2025: contributor

   This is a small follow-up PR to the recently added TestShell test (#33546), verifying the stdout message “TestShell is already running!” when trying to instantiate a second instance.
2. test: check for output to stdout in `TestShell` test 52230a7f69
3. DrahtBot added the label Tests on Nov 26, 2025
4. 
   DrahtBot commented at 3:55 pm on November 26, 2025: contributor

   The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

   Code Coverage & Benchmarks

   For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/33951.

   Reviews

   See the guideline for information on the review process.

   Type	Reviewers
   ACK	maflcko, rkrux

   If your review is incorrectly listed, please copy-paste <!–meta-tag:bot-skip–> into the comment that the bot should ignore.

5. 
   maflcko commented at 8:44 am on November 27, 2025: member

   lgtm ACK 52230a7f697fd99abdc4550d6a60737be024e246
6. rkrux approved
7. 
   rkrux commented at 9:00 am on November 27, 2025: contributor

   crACK 52230a7f697fd99abdc4550d6a60737be024e246

   I didn’t know about TestShell, looks quite handy!

8. fanquake merged this on Nov 27, 2025
9. fanquake closed this on Nov 27, 2025

   ---

10. theStack deleted the branch on Nov 27, 2025

Contributors
theStack DrahtBot maflcko rkrux

Labels
Tests