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Validation

We want to make sure that any changes we make to the code don't:

  • stop fcl files from working, or
  • change the content of the EventNtuple unexpectedly

Validating EventNtuple Runs

From EventNtuple/ directory:

. ./validation/test_fcls.sh

This script will run all the supported fcl files over relevant datasets. All tests should report OK

Creating a Validation File

Before making any changes, create an EventNtuple file and run the validation script. This creates a new ROOT file with histograms created from the EventNtuple ntuple:

mu2e -c EventNtuple/fcl/from_mcs_mockdata.fcl -S filelist.txt --TFileName nts.ntuple.before.root

root -l -b EventNtuple/validation/create_val_file.C\(\"nts.ntuple.before.root\",\"val.ntuple.before.root\"\)

Validating EventNtuple Contents

To make sure that the contents of the EventNtuple haven't changed, we use valCompare to compare the histograms generated by the create_val_file.C script:

valCompare -p ntuple-validation-booklet.pdf -r val.ntuple.before.root val.ntuple.after.root

Note that the before file is created before any changes, and the after file is created by test_fcls.sh.

We expect perfect matches between all histograms. However, in some rare instances, we may expect differences. If you see any non-perfect matches, then discuss with the EventNtuple L4.