From 1aaadeda7d865e9e04b1bd2eb661c6e2a6537956 Mon Sep 17 00:00:00 2001
From: Emil Velikov <emil.l.velikov@gmail.com>
Date: Tue, 5 Nov 2024 15:07:34 +0000
Subject: [PATCH] ci: add code coverage via Codecov

Add a simple code coverage pipeline based on the CodeQL one.

Should give us pretty reports in the PRs and web UI with the results. We
can consider having HTML reports on our website (once it's up that is)
in addition or instead of at a future point.

Closes: https://github.com/kmod-project/kmod/issues/61
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
---
 .github/actions/setup-ubuntu/action.yml |  1 +
 .github/workflows/coverage.yml          | 65 +++++++++++++++++++++++++
 2 files changed, 66 insertions(+)
 create mode 100644 .github/workflows/coverage.yml

diff --git a/.github/actions/setup-ubuntu/action.yml b/.github/actions/setup-ubuntu/action.yml
index d1b13c6d..8874d193 100644
--- a/.github/actions/setup-ubuntu/action.yml
+++ b/.github/actions/setup-ubuntu/action.yml
@@ -18,6 +18,7 @@ runs:
           build-essential \
           clang \
           gcc-multilib \
+          gcovr \
           git \
           gtk-doc-tools \
           liblzma-dev \
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
new file mode 100644
index 00000000..0575a457
--- /dev/null
+++ b/.github/workflows/coverage.yml
@@ -0,0 +1,65 @@
+# SPDX-FileCopyrightText: 2024 Emil Velikov <emil.l.velikov@gmail.com>
+# SPDX-FileCopyrightText: 2024 Lucas De Marchi <lucas.de.marchi@gmail.com>
+#
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
+name: Code Coverage
+
+on:
+  push:
+    branches: [master, ci-test]
+  pull_request:
+    branches: [master]
+  schedule:
+    - cron: "30 2 * * 0"
+
+permissions:
+  contents: read
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        container:
+          - name: 'ubuntu:24.04'
+            meson_setup: '-D b_sanitize=none -D b_coverage=true'
+
+    container:
+      image: ${{ matrix.container.name }}
+
+    steps:
+      - name: Sparse checkout the local actions
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+        with:
+          sparse-checkout: .github
+
+      - uses: ./.github/actions/setup-ubuntu
+        if: ${{ startsWith(matrix.container.name, 'ubuntu') }}
+
+      - name: Checkout the whole project
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+
+      - name: Set the environment
+        run: |
+          # The second checkout above claims to set safe.directory, yet it
+          # doesn't quite work. Perhaps our double/sparse checkout is to blame?
+          git config --global --add safe.directory '*'
+
+          .github/print-kdir.sh >> "$GITHUB_ENV"
+
+      - name: Build
+        run: |
+          mkdir build && cd build
+          meson setup --native-file ../build-dev.ini ${{ matrix.container.meson_setup }} . ..
+          meson compile
+          meson test
+          ninja coverage-xml
+
+      - name: Upload Coverage
+        uses: codecov/codecov-action@b9fd7d16f6d7d1b5d2bec1a2887e65ceed900238 # v4.6.0
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          file: build/meson-logs/coverage.xml