Old bot: fix parsing of test command (use empty-string instead of None)

[iarspider]

• Command: test full cmssw
• Exception:

Traceback (most recent call last):
  File "/data/sdt/cms-bot/process-pull-request.py", line 102, in <module>
    process_pr(repo_config, gh, repo, repo.get_issue(prId), opts.dryRun, force=opts.force)
  File "/data/sdt/cms-bot/process_pr.py", line 1882, in process_pr
    ok, v2, v3, v4, v5 = check_test_cmd(first_line, repository, global_test_params)
  File "/data/sdt/cms-bot/process_pr.py", line 888, in check_test_cmd
    res = parse_test_cmd(first_line)
  File "/data/sdt/cms-bot/process_pr.py", line 859, in parse_test_cmd
    if p.prev_keyword and not p.prev_keyword.fullmatch(prev_t):
TypeError: expected string or bytes-like object

Will forward-port to new bot.

[iarspider]

@raoatifshad thanks for catching this!

[cmsbuild]

A new Pull Request was created by @iarspider for branch master.

@akritkbehera, @cmsbuild, @iarspider, @raoatifshad, @smuzaffar can you please review it and eventually sign? Thanks.
@ftenchini, @mandrenguyen, @sextonkennedy you are the release manager for this.
cms-bot commands are listed here

[cmsbuild]

cms-bot internal usage

[iarspider]

@cmsbuild please test

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-f7247f/53088/summary.html
COMMIT: abe6285
CMSSW: CMSSW_17_0_X_2026-05-05-1100/el8_amd64_gcc13
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cms-bot/2736/53088/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• No significant changes to the logs found
• Reco comparison results: 6 differences found in the comparisons
• DQMHistoTests: Total files compared: 53
• DQMHistoTests: Total histograms compared: 4187168
• DQMHistoTests: Total failures: 13
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 4187135
• 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

[smuzaffar]

+externals

[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, @ftenchini, @mandrenguyen (and backports should be raised in the release meeting by the corresponding L2)