Using Bazel to generate coverage report

Question

I am using genhtml command to generate html coverage report from Bazel generated coverage.dat file:

genhtml bazel-testlogs/path/to/TestTarget/coverage.dat --         


        

Answer 1

Bazel added support for C++ coverage (though I couldn't find much documentation for it).

I was able to generate a combined coverage.dat file with

bazel coverage -s \
  --instrument_test_targets \
  --experimental_cc_coverage \
  --combined_report=lcov \
  --coverage_report_generator=@bazel_tools//tools/test/CoverageOutputGenerator/java/com/google/devtools/coverageoutputgenerator:Main \
  //...

The coverage file gets added to bazel-out/_coverage/_coverage_report.dat