'Bazel: How to exclude path from code coverage for Scala / Java?

I am using Bazel with rules_scala. My problem now is how to exclude files from code coverage. So far this is how I am running coverage:

rm -rf coverage
bazel coverage --combined_report=lcov --coverage_report_generator="@bazel_tools//tools/test/CoverageOutputGenerator/java/com/google/devtools/coverageoutputgenerator:Main" ... 
genhtml -o coverage --ignore-errors source bazel-out/_coverage/_coverage_report.dat

But there are some folders I would like to exclude from code coverage. I tried using the --instrumentation_filter flag, but no matter what I tried putting there Bazel still collect coverage for this folder.

Are there any examples how I should use this flag?

Thanks!

bazelbazel-javabazel-scala


Solution 1:[1]

Use

bazel coverage --combined_report=lcov --coverage_report_generator="@bazel_tools//tools/test/CoverageOutputGenerator/java/com/google/devtools/coverageoutputgenerator:Main" -- //... -//package/to/ignore/...

Solution 2:[2]

This appears to be a bug with rules_scala. See this issue for more details.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Vertexwahn
Solution 2 Omer Levi Hevroni

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