Moved FWCore/TestProcessor to catch2

[Dr15Jones]

PR description:

Part of a campaign to reduce FWCore dependencies.

PR validation:

Code compiles, unit tests pass.

resolves cms-sw/framework-team#2123

[cmsbuild]

cms-bot internal usage

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-50610/48799

[cmsbuild]

A new Pull Request was created by @Dr15Jones for master.

It involves the following packages:

• FWCore/TestProcessor (core)

@Dr15Jones, @cmsbuild, @makortel, @smuzaffar can you please review it and eventually sign? Thanks.
@makortel, @wddgit this is something you requested to watch as well.
@ftenchini, @mandrenguyen, @sextonkennedy you are the release manager for this.

cms-bot commands are listed here

[Dr15Jones]

please test

[cmsbuild]

+1

Size: This PR adds an extra 20KB to repository
Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-1a33e5/52369/summary.html
COMMIT: b3c2f27
CMSSW: CMSSW_16_1_X_2026-03-31-1100/el8_amd64_gcc13
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/50610/52369/install.sh to create a dev area with all the needed externals and cmssw changes.

The following merge commits were also included on top of IB + this PR after doing git cms-merge-topic:

• @fwyzard Extend the TrivialSerialisation mechanism to device products #50597
• @perrotta Update the beam spot tag in the Oflline data GT in autoCond #50592
• @bfonta Minor clarification of the --relval cmsDriver option. #50258
• @Dr15Jones Moved ExternalRandomNumberGeneratorService to GeneratorInterface #50590
• @AdrianoDee "Condition Validation"-Like Workflows #50574
• @Dr15Jones Add edm::stream::WatchRuns to DPGAnalysis modules #50517

You can see more details here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-1a33e5/52369/git-recent-commits.json
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-1a33e5/52369/git-merge-result

Comparison Summary

Summary:

• You potentially added 67 lines to the logs
• Reco comparison results: 12398 differences found in the comparisons
• DQMHistoTests: Total files compared: 52
• DQMHistoTests: Total histograms compared: 4087656
• DQMHistoTests: Total failures: 3817
• DQMHistoTests: Total nulls: 12
• DQMHistoTests: Total successes: 4083807
• DQMHistoTests: Total skipped: 20
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.03100000000000001 KiB( 51 files compared)
• DQMHistoSizes: changed ( 2024.0040001 ): 0.070 KiB JetMET/SUSYDQM
• DQMHistoSizes: changed ( 2024.0050001 ): -0.012 KiB JetMET/SUSYDQM
• DQMHistoSizes: changed ( 2024.0060001 ): -0.023 KiB JetMET/SUSYDQM
• DQMHistoSizes: changed ( 2024.0070001 ): -0.004 KiB JetMET/SUSYDQM
• Checked 223 log files, 194 edm output root files, 52 DQM output files
• TriggerResults: found differences in 2 / 50 workflows

[makortel]

@cmsbuild, please test

To double-check the comparisons without the other PRs

[cmsbuild]

+1

Size: This PR adds an extra 16KB to repository
Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-1a33e5/52406/summary.html
COMMIT: b3c2f27
CMSSW: CMSSW_16_1_X_2026-04-01-1100/el8_amd64_gcc13
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/50610/52406/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• You potentially added 7 lines to the logs
• Reco comparison results: 9 differences found in the comparisons
• DQMHistoTests: Total files compared: 53
• DQMHistoTests: Total histograms compared: 4180749
• DQMHistoTests: Total failures: 9
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 4180720
• DQMHistoTests: Total skipped: 20
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 52 files compared)
• Checked 227 log files, 197 edm output root files, 53 DQM output files
• TriggerResults: no differences found

[makortel]

+core

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next master IBs (tests are also fine). This pull request will now be reviewed by the release team before it's merged. @sextonkennedy, @mandrenguyen, @ftenchini (and backports should be raised in the release meeting by the corresponding L2)

[mandrenguyen]

+1