Added code coverage testing via GitHub Actions and Codecov (#2)

.github/workflows/run-tests.yaml

@@ -11,11 +11,17 @@ jobs:
       matrix:
         config:
         - {
-            name: "Ubuntu Latest GCC", artifact: "Linux.tar.xz",
-            os: ubuntu-latest
+            name: "Ubuntu Latest GCC", 
+            os: ubuntu-latest,
+            cov: false
           }
         - {
-            name: "macOS Latest Clang", artifact: "macOS.tar.xz",
+            name: "Ubuntu Latest GCC, coverage enabled", 
+            os: ubuntu-latest,
+            cov: true
+          }
+        - {
+            name: "macOS Latest Clang", 
             os: macos-latest
           }
 
@@ -26,10 +32,29 @@ jobs:
       uses: lukka/get-cmake@latest
 
     - name: Configure the build
+      if: ${{ matrix.config.cov == false }}
       run: cmake -S . -B build
 
+    - name: Configure the build with coverage
+      if: ${{ matrix.config.cov == true }}
+      run: cmake -S . -B build -DCODE_COVERAGE=ON
+
     - name: Run the build
       run: cmake --build build
 
     - name: Run the tests
-      run: build/tests/libtest
+      run: |
+        cd build
+        ctest
+
+    - name: Generate code coverage
+      if: ${{ matrix.config.cov == true }}
+      run: |
+        cd build/tests/CMakeFiles/libtest.dir/src/
+        gcov -abcfu *.gcno
+
+    - name: Upload to Codecov
+      if: ${{ matrix.config.cov == true }}
+      uses: codecov/codecov-action@v1
+      with:
+        directory: build/tests/CMakeFiles/libtest.dir/src/

README.md

@@ -3,6 +3,7 @@
 ![Unit tests](https://github.com/LTLA/CppKmeans/actions/workflows/run-tests.yaml/badge.svg)
 ![Documentation](https://github.com/LTLA/CppKmeans/actions/workflows/doxygenate.yaml/badge.svg)
 ![stats comparison](https://github.com/LTLA/CppKmeans/actions/workflows/compare-kmeans.yaml/badge.svg)
+[![Codecov](https://codecov.io/gh/LTLA/CppKmeans/branch/master/graph/badge.svg?token=7S231XHC0Q)](https://codecov.io/gh/LTLA/CppKmeans)
 
 ## Overview
 

tests/CMakeLists.txt

@@ -23,6 +23,12 @@ target_link_libraries(
     kmeans
 )
 
+set(CODE_COVERAGE "Enable coverage testing" OFF)
+if(CODE_COVERAGE AND CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
+    target_compile_options(libtest PRIVATE -O0 -g --coverage)
+    target_link_options(libtest PRIVATE --coverage)
+endif()
+
 include(GoogleTest)
 gtest_discover_tests(libtest)