Verify test coverage for 'csaccess' source set during build #301
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Here's a little PR for one of the To-Do comments in the build file, which was that we should verify test coverage for source files in the 'csaccess' source set during build. The rationale being that if only one call to the Checkstyle API remains uncovered, it may break the plugin with the next Checkstyle version.
I set the initial required coverage to our current coverage (which seems fine). It can be changed by modifying the MINIMUM_CSACCESS_COVERAGE constant.
This feature is made possible by the fact that Gradle decided to bring forward the feature originally planned for Gradle 4.0. Coverage verification is now possible starting with Gradle 3.4. I still had to upgrade from Gradle 3.2.1 which we were using.
Hope this helps!