Merge branch 'ci-coverage-include-baseline' into 'master'

CI: Include coverage data of code which isn't executed by the test suite.

See merge request GNOME/glib!152

.gitlab-ci/test-msys2.sh

@@ -23,29 +23,38 @@ pacman --noconfirm -S --needed \
     mingw-w64-$MSYS2_ARCH-toolchain \
     mingw-w64-$MSYS2_ARCH-zlib
 
+curl -O -J -L "https://github.com/linux-test-project/lcov/releases/download/v1.13/lcov-1.13.tar.gz"
+echo "44972c878482cc06a05fe78eaa3645cbfcbad6634615c3309858b207965d8a23  lcov-1.13.tar.gz" | sha256sum -c
+tar -xzf lcov-1.13.tar.gz
+LCOV="$(pwd)/lcov-1.13/bin/lcov"
+
+mkdir -p _coverage
 mkdir -p _ccache
 export CCACHE_BASEDIR="$(pwd)"
 export CCACHE_DIR="${CCACHE_BASEDIR}/_ccache"
 pip3 install --upgrade --user meson==0.47.0
 export PATH="$HOME/.local/bin:$PATH"
 export CFLAGS="-coverage -ftest-coverage -fprofile-arcs"
+DIR="$(pwd)"
 
 meson --werror --buildtype debug _build
 cd _build
 ninja
 
+"${LCOV}" \
+    --quiet \
+    --rc lcov_branch_coverage=1 \
+    --directory "${DIR}/_build" \
+    --capture \
+    --initial \
+    --output-file "${DIR}/_coverage/${CI_JOB_NAME}-baseline.lcov"
+
 # FIXME: fix the test suite
 meson test --timeout-multiplier ${MESON_TEST_TIMEOUT_MULTIPLIER} || true
 
-cd ..
-curl -O -J -L "https://github.com/linux-test-project/lcov/releases/download/v1.13/lcov-1.13.tar.gz"
-echo "44972c878482cc06a05fe78eaa3645cbfcbad6634615c3309858b207965d8a23  lcov-1.13.tar.gz" | sha256sum -c
-tar -xvzf lcov-1.13.tar.gz
-
-mkdir -p _coverage
-./lcov-1.13/bin/lcov \
+"${LCOV}" \
+    --quiet \
     --rc lcov_branch_coverage=1 \
-    --directory . \
+    --directory "${DIR}/_build" \
     --capture \
-    --no-external \
-    --output-file "_coverage/${CI_JOB_NAME}.lcov"
+    --output-file "${DIR}/_coverage/${CI_JOB_NAME}.lcov"