shithub: dav1d

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CI: Enable coverage reports

Blacklisted some files not directly relevant to the codebase (such as
tests, tools and debugging functions).

The coverage HTML report gets attached as a build artifact, although
unfortunately we can't link directly to the `index.html`. We also attach
the coverage XML as a cobertura report, although I'm not sure if it does
anything.

--- a/.gitlab-ci.yml

+++ b/.gitlab-ci.yml

@@ -4,7 +4,7 @@

     - test

 .debian-amd64-common:

-    image: registry.videolan.org/dav1d-debian-unstable:20200306210534

+    image: registry.videolan.org/dav1d-debian-unstable:20200602183013

     stage: build

     tags:

         - docker

@@ -383,8 +383,21 @@

         - meson build --buildtype release

                       -Dtestdata_tests=true

                       -Dlogging=false

+                      -Db_coverage=true

         - ninja -C build

         - cd build && time meson test -v

+        - ninja coverage-html

+        - mv meson-logs/coveragereport ../coverage

+        - ninja coverage-xml

+        - grep -Eo 'line-rate="[^"]+"' meson-logs/coverage.xml | head -n 1 |

+          grep -Eo '[0-9.]+' | awk '{ print "coverage:", $1 * 100 } '

+    coverage: '/^coverage: (\d+.\d+)$/'

+    artifacts:

+        expose_as: 'Coverage HTML report'

+        paths:

+            - coverage/

+        reports:

+            cobertura: build/meson-logs/coverage.xml

 test-debian-asm:

     extends:

--- /dev/null

+++ b/gcovr.cfg

@@ -1,0 +1,3 @@

+exclude = .*/tests/.*

+exclude = .*/tools/.*

+exclude = .*/include/common/dump.h