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| author | Jeremy Bettis <jbettis@google.com> | 2022-09-08 13:00:59 -0600 |
|---|---|---|
| committer | Chromeos LUCI <chromeos-scoped@luci-project-accounts.iam.gserviceaccount.com> | 2022-09-08 21:38:02 +0000 |
| commit | 789e0883a3f83fc4703fd7c562e8a9bcce90313a (patch) | |
| tree | 30d98f19353603882186e507a5c4d392e539de8b /docs | |
| parent | 6ec358cf577437aa1bc1580ef08123056298eb34 (diff) | |
| download | chrome-ec-789e0883a3f83fc4703fd7c562e8a9bcce90313a.tar.gz | |
ec: Document how to get coverage report for board
Document the instructions on how to get test coverage for one legacy EC
board using eldrid as the sample.
BRANCH=None
BUG=None
TEST=Ran commands (Eldrid is 34%)
Signed-off-by: Jeremy Bettis <jbettis@google.com>
Change-Id: Id62e3056c58e4c0e7e0008c8b8c3cc78f30e5b39
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3883767
Auto-Submit: Jeremy Bettis <jbettis@chromium.org>
Reviewed-by: Keith Short <keithshort@chromium.org>
Tested-by: Jeremy Bettis <jbettis@chromium.org>
Commit-Queue: Jeremy Bettis <jbettis@chromium.org>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/code_coverage.md | 23 |
1 files changed, 23 insertions, 0 deletions
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 |