[gnome-control-center] CI: add code coverage report

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit a1d57165c1a5de9aa409aad55bfe0ac05fd59fd7
Author: Claudio André <claudioandre br gmail com>
Date:   Sun Jun 17 19:13:39 2018 -0300

    CI: add code coverage report

 .gitlab-ci.yml | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index e908f2944..7a4db76f7 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -65,6 +65,52 @@ test:
         meson test -C _build --verbose --no-stdsplit
       fi
 
+##
+# Stage: Test
+#
+# Runs the coverage test.
+##
+coverage:
+  stage: test
+  artifacts:
+    name: log
+    when: always
+    paths:
+    - $(pwd)/*.log
+    - _build/meson-logs/*
+    - _build/meson-logs/coveragereport
+
+  script:
+    - echo "== Info =="
+    - build-aux/ci/ci-helper.sh "INFO"
+    - build-aux/ci/ci-helper.sh "GIT_INFO"
+
+    - echo "== Building =="
+    - rm -rf _build/
+    - meson . _build -Db_coverage=true
+    - ninja -C _build 2>&1 | tee compilation.log
+
+    - echo "== Testing =="
+    - ninja -C _build test
+    - ninja -C _build coverage-html
+
+##
+# Stage: Delivery
+#
+# Publish the Coverage Report generated above
+##
+pages:
+  stage: delivery
+  dependencies:
+    - coverage
+  script:
+    - mv _build/meson-logs/coveragereport/ public/
+  artifacts:
+    paths:
+      - public
+  only:
+    - master@GNOME/gnome-control-center
+
 ##
 # Stage: Delivery
 #