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Diffstat (limited to 'docs/code_coverage.md')
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diff --git a/docs/code_coverage.md b/docs/code_coverage.md index e6e9b014c2..7f0c544692 100644 --- a/docs/code_coverage.md +++ b/docs/code_coverage.md @@ -23,6 +23,29 @@ data into a code coverage report using the `lcov` and `genhtml` tools. The coverage report top-level page is `build/coverage/coverage_rpt/index.html`. +To get a report for one specific board's coverage run these commands: + +``` +BOARD=eldrid +make -j$(nproc) build/coverage/initial-${BOARD}.info test-coverage +# Merge board coverage and test coverage +lcov -o build/coverage/${BOARD}_merged.info --rc lcov_branch_coverage=1 \ + -a build/coverage/initial-${BOARD}.info -a build/coverage/lcov.info +# Filter out some unhelpful paths +lcov -o build/coverage/${BOARD}_filtered.info --rc lcov_branch_coverage=1 \ + -r build/coverage/${BOARD}_merged.info ${PWD}'/third_party/**' \ + ${PWD}'/build/**' '/usr/include/**' '/usr/lib/**' '${PWD}/test/**' \ + ${PWD}'/private/fingerprint/google-fpalg/mcutest/**' +# Restrict to only files used by the board +grep "SF:" "build/coverage/initial-${BOARD}.info" | sort -u | \ + sed -e 's|^SF:||' | xargs lcov --rc lcov_branch_coverage=1 \ + -o build/coverage/${BOARD}_final.info \ + -e build/coverage/${BOARD}_filtered.info +# Generate HTML +genhtml --branch-coverage -q -o build/coverage/${BOARD}_rpt \ + -t "${BOARD} coverage" -s build/coverage/${BOARD}_final.info +``` + ### Noise in the build output When building for code coverage, you may see multiple warnings of the form |