Add coverage reporting support (openstreetmap#313)

* Add coverage reporting

* No longer need to run `astyle` from within a container

* Multiple test runs seems to help catch more coverage

* Re-order renderd shutdown processes

* Move coverage job into a new workflow

.github/actions/cmake/test/action.yml

@@ -10,19 +10,7 @@ runs:
       shell: bash --noprofile --norc -euxo pipefail {0}
 
     - name: Test `mod_tile`
-      run: ctest -T test
-      shell: bash --noprofile --norc -euxo pipefail {0}
-      working-directory: build
-
-    - name: Process `mod_tile` coverage results
-      if: matrix.build_system == 'CMake' && matrix.compiler == 'GNU'
-      run: ctest -T coverage
-      shell: bash --noprofile --norc -euxo pipefail {0}
-      working-directory: build
-
-    - name: Retest `mod_tile` on failure
-      if: failure()
-      run: ctest --exclude-regex 'clear_dirs|remove_tile' --verbose
+      run: ctest --exclude-regex 'clear_dirs|remove_tile' --output-on-failure
       shell: bash --noprofile --norc -euxo pipefail {0}
       working-directory: build
 

.github/actions/dependencies/install/action.yml

@@ -185,7 +185,9 @@ runs:
           ${{ inputs.ubuntu-test-dependencies }}
           ${{ matrix.build_system == 'CMake' && 'cmake' || '' }}
           ${{ matrix.compiler == 'LLVM' && 'clang' || 'g++ gcc' }}
-      if: startsWith(matrix.image, 'ubuntu:')
+      if: |
+        startsWith(matrix.image, 'ubuntu:') ||
+        (!matrix.image && runner.os == 'Linux')
 
     - name: Build & Install `mapnik` (Amazon Linux 2/CentOS 7)
       uses: ./.github/actions/dependencies/build-and-install/mapnik

.github/actions/dependencies/install/apt-get/action.yml

@@ -8,11 +8,11 @@ runs:
   using: composite
   steps:
     - name: Update package information
-      run: apt-get --yes update
+      run: ${{ !matrix.image && 'sudo' || '' }} apt-get --yes update
       shell: bash --noprofile --norc -euxo pipefail {0}
 
     - name: Install package(s)
       env:
         DEBIAN_FRONTEND: noninteractive
-      run: apt-get --yes install ${{ inputs.packages }}
+      run: ${{ !matrix.image && 'sudo' || '' }} apt-get --yes install ${{ inputs.packages }}
       shell: bash --noprofile --norc -euxo pipefail {0}

.github/workflows/coverage.yml

@@ -0,0 +1,59 @@
+---
+name: Coverage
+
+on:
+  - push
+
+jobs:
+  Coverage:
+    name: Build, Test & Report Coverage
+    runs-on: ubuntu-latest
+    env:
+      CFLAGS: --coverage
+      CXXFLAGS: --coverage
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Install dependencies
+        uses: ./.github/actions/dependencies/install
+        with:
+          ubuntu-test-dependencies: >-
+            apache2
+            lcov
+
+      - name: Build `mod_tile`
+        uses: ./.github/actions/cmake/build
+
+      - name: Test `mod_tile`
+        uses: ./.github/actions/cmake/test
+
+      - name: Test `mod_tile` again (to gather more coverage data)
+        uses: ./.github/actions/cmake/test
+
+      - name: Process `mod_tile` coverage results
+        run: |
+          ctest -T coverage
+          lcov \
+            --capture \
+            --directory . \
+            --output-file coverage.info
+          lcov \
+            --output-file coverage.info \
+            --remove coverage.info \
+            "${GITHUB_WORKSPACE}/includes/catch.hpp" \
+            "${GITHUB_WORKSPACE}/src/gen_tile_test.cpp" \
+            "/usr/*"
+          genhtml coverage.info --output-directory coverage
+        working-directory: build
+
+      - name: Upload `mod_tile` coverage results artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: Coverage Results
+          path: build/coverage
+
+      - name: Report `mod_tile` coverage results to `codecov.io`
+        uses: codecov/codecov-action@v3
+        with:
+          files: build/coverage.info

.github/workflows/lint.yml

@@ -8,24 +8,17 @@ on:
       - master
       - develop
 
-env:
-  test-dependencies: >-
-    astyle
-
 jobs:
   astyle:
     name: Lint with `astyle`
     runs-on: ubuntu-latest
-    container:
-      image: ubuntu:latest
     steps:
       - name: Checkout code
         uses: actions/checkout@v3
       - name: Provision environment
         uses: ./.github/actions/dependencies/install/apt-get
         with:
-          packages: >-
-            ${{ env.test-dependencies }}
+          packages: astyle
       - name: Check if any modifications were made by `astyle`
         env:
           ASTYLE_CMD: >-

tests/CMakeLists.txt

@@ -198,8 +198,8 @@ add_test(
 add_test(
   NAME stop_renderd
   COMMAND ${BASH} -c "
-    ${KILL_EXECUTABLE} $(${CAT_EXECUTABLE} run/renderd.pid) && ${RM} run/renderd.pid
     ${KILL_EXECUTABLE} $(${CAT_EXECUTABLE} run/renderd1.pid) && ${RM} run/renderd1.pid
+    ${KILL_EXECUTABLE} $(${CAT_EXECUTABLE} run/renderd.pid) && ${RM} run/renderd.pid
   "
 )
 add_test(