The SBML Test Suite is a conformance testing system. It allows developers and users to test the degree and correctness of the SBML support provided in a software package.
I've checked tests again (this time for older versions of SBML) and noticed that in tests 1167 and 1168 for SBML l3v1 files "enzyme-identical-l3v1.xml" have external model definitions referring "enzyme_model.xml" instead of "enzyme_model-3v1.xml".
From Ilya: