Associative Coverage Merge in Riviera-PRO

[tsmelt]

In addition to the standard code coverage report, I like to use the coverage ranking feature of Riviera-PRO to determine how each test case contributes to the total coverage. Unfortunately, I can't just call acdb rank on the build's merged coverage database since vendor_MergeCodeCoverage doesn't use the -associative option for acdb merge. It would be nice to have this option enabled:

OSVVM-Scripts/VendorScripts_RivieraPro.tcl

Line 287 in 20351e9

acdb merge -o ${CoverageFileBaseName}.acdb -i {*}[join $CovFiles " -i "]

[JimLewis]

Please list what you would like the command line changed to. Is it appropriate to always set this option? It should be an easy add. It may require a SetExtendedMergeOptions to make the setting optional and/or configurable.

[tsmelt]

The command line would be changed to:
acdb merge -associative -o ${CoverageFileBaseName}.acdb -i {*}[join $CovFiles " -i "]

From what I can tell from the Riviera documentation, the -associative option just includes additional information in the merged database and it should be fine to always set. Using the OSVVM 2025.06a release, I ran build RunDemoTestsWithCoverage.pro both with and without the option set. With the option set, the merged database file was about 11% larger. The cumulative coverage numbers in the html report were identical, but the report shows handy information about which test(s) cover each statement or branch: