After upload of a module to CPAN all testing reports are positive. Nevertheless the test coverate (usually located between Bus factor and License on the left hand side) is missing. In my sandbox I do not have any issues with the test coverage and have achieved 100% for this module.
I suppose that this is somehow caused by improper configuration provided by Makefile.PL, where the hash element { test }->{ TESTS } currently contains the value 't/*/*/*.t t/*/*/*/*.t', but I cannot recognize any error therein.
What could be the reason for missing test coverage visibility? Any hint is greatly appreciated!
In one of the previous releases I used more precise description of test files pattern namely 't/Test/Expander/*.t t/Test/Expander/NoCLASS/*.t', but this did not help.
What is also inexplicable for me: the test coverage is computed and visible on CPAN Coverage Report.