TrigAnalysisTest: add MC grid test comparing CA vs legacy counts

Hello,

Similarly to !67637 (merged) which introduced a test comparing CA vs legacy trigger counts in data, this MR introduces a test comparing CA vs legacy counts for MC. The input is a mix of ttbar, stau, and bphys samples, in order to maximise the coverage in terms of trigger menu. The test uses 8 threads, 2500 events, and runs in ~2h30.

Tagging @khoo , @sshaw , @mark , @cpollard for info.

Cheers, Bertrand

Trigger/TrigValidation/TrigAnalysisTest/test/test_trigAna_RDOtoRDOTrig_CAvsLegacy_v1Dev_grid.py

+#!/usr/bin/env python
+# Copyright (C) 2002-2023 CERN for the benefit of the ATLAS collaboration
+#
+# art-description: Comparison of CA vs legacy counts for the RDOtoRDOTrigger transform with Dev menu
+# art-type: grid
+# art-include: main/Athena
+# art-athena-mt: 8
+# art-output: *.txt
+# art-output: *.log
+# art-output: log.*
+# art-output: *.out
+# art-output: *.err
+# art-output: *.log.tar.gz
+# art-output: *.new
+# art-output: *.json
+# art-output: expert*.root
+# art-output: *.pmon.gz
+# art-output: *perfmon*
+# art-output: prmon*
+# art-output: *.check*
+
+from TrigValTools.TrigValSteering import Test, ExecStep, CheckSteps
+from TrigValTools.TrigValSteering.Step import get_step_from_list
+
+preExec = ';'.join([
+  'flags.Trigger.triggerMenuSetup=\'Dev_pp_run3_v1_TriggerValidation_prescale\'',
+  'flags.Trigger.AODEDMSet=\'AODFULL\'',
+])
+
+# Run Legacy menu
+exLegacy = ExecStep.ExecStep('Legacy')
+exLegacy.type = 'Reco_tf'
+exLegacy.input = 'ttbar_stau_bphys'
+exLegacy.max_events = 2500
+exLegacy.threads = 8
+exLegacy.concurrent_events = 8
+exLegacy.args = '--outputRDO_TRIGFile=RDO_TRIG_Legacy.pool.root'
+exLegacy.args += f' --preExec="all:{preExec};"'
+
+# Rename Legacy histograms
+hmLegacy = CheckSteps.RootMergeStep('HistMergeLegacy')
+hmLegacy.merged_file = 'expert-monitoring_Legacy.root'
+hmLegacy.input_file = 'expert-monitoring.root'
+
+# ChainDump to create Legacy reference
+cdLegacy = ExecStep.ExecStep('ChainDumpLegacy')
+cdLegacy.type = 'other'
+cdLegacy.executable = 'chainDump.py'
+cdLegacy.input = ''
+cdLegacy.args = '-f expert-monitoring_Legacy.root --yaml ChainDumpLegacy.yml'
+cdLegacy.auto_report_result = False
+cdLegacy.prmon = False
+
+# Run CA menu
+exCA = ExecStep.ExecStep('CA')
+exCA.type = 'Reco_tf'
+exCA.input = 'ttbar_stau_bphys'
+exCA.max_events = 2500
+exCA.threads = 8
+exCA.concurrent_events = 8
+exCA.args = '--outputRDO_TRIGFile=RDO_TRIG_CA.pool.root'
+exCA.args += f' --preExec="all:{preExec};"'
+exCA.args += ' --CA "all:True"'
+
+test = Test.Test()
+test.art_type = 'grid'
+test.exec_steps = [exLegacy, hmLegacy, cdLegacy, exCA]
+test.check_steps = CheckSteps.default_check_steps(test)
+
+# Rename CA ChainDump
+cdCA = get_step_from_list("ChainDump", test.check_steps)
+cdCA.args = '--yaml ChainDumpCA.yml'
+
+# Add a step comparing counts from CA vs Legacy
+countComp = CheckSteps.ChainCompStep()
+countComp.reference = 'ChainDumpLegacy.yml'
+countComp.input_file = 'ChainDumpCA.yml'
+countComp.explicit_reference = True # Test produces the reference
+countComp.required = True # Final exit code doesn't depend on this step
+CheckSteps.add_step_after_type(test.check_steps, CheckSteps.ChainDumpStep, countComp)
+
+import sys
+sys.exit(test.run())