What is the coverage.db file and why am I seeing files like coverage.dbxxxxxxxxx_xxxxx_xxxx?

Q: What is the coverage.db file and why am I seeing files like coverage.dbxxxxxxxxx_xxxxx_xxxx? The coverage.db file is the instrumentation database telling Clover the structure of your project and files during the last instrumentation event. coverage.dbxxxxxxxxx_xxxxx_xxxx hold the code coverage from your unit test or application run.

You will generally only have one instrumentation database per directory and you should expect to have many (sometimes 100s or even 1000s) of coverage recording files per directory.