# Create a coverage report that will later be uploaded. Remove info about
# system libraries/headers, as we don't really care about them.
- lcov --directory "${root}/${BUILD_DIR:?}" --capture --output-file "${dest}"
- lcov --remove "${dest}" -o "${dest}" '/usr/include/*' '/usr/lib/*'
+ if [[ -f "$dest" ]]; then
+ # If the destination report file already exists, don't overwrite it, but
+ # dump the new report in a temporary file and then merge it with the already
+ # present one - this usually happens when running both "parts" of a test
+ # in one run (the qemu and the nspawn part).
+ lcov --directory "${root}/${BUILD_DIR:?}" --capture --output-file "${dest}.new"
+ lcov --remove "${dest}.new" -o "${dest}.new" '/usr/include/*' '/usr/lib/*'
+ lcov --add-tracefile "${dest}" --add-tracefile "${dest}.new" -o "${dest}"
+ rm -f "${dest}.new"
+ else
+ lcov --directory "${root}/${BUILD_DIR:?}" --capture --output-file "${dest}"
+ lcov --remove "${dest}" -o "${dest}" '/usr/include/*' '/usr/lib/*'
+ fi
return 0
}