feat: add unit tests in ci

.clang-tidy

@@ -4,6 +4,7 @@ Checks:
 -modernize-use-trailing-return-type,-bugprone-easily-swappable-parameters,-readability-identifier-length'
 WarningsAsErrors: '*'
 HeaderFilterRegex: 'include/aws/.*\.h$'
+ExcludeHeaderFilter: 'build/_deps/gtest-src.*'
 FormatStyle: 'none'
 CheckOptions:
   - key:             modernize-pass-by-value.ValuesOnly

.github/workflows/workflow.yml

@@ -27,12 +27,15 @@ jobs:
     - name: Configure CMake
       # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
       # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
-      run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_CXX_CLANG_TIDY=clang-tidy
+      run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_CXX_CLANG_TIDY=clang-tidy -DENABLE_UNIT_TESTS=ON
 
     - name: Build It
       # Build your program with the given configuration
       run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
 
+    - name: Test It
+      run: cd build && make && ctest
+
   build-on-arm-too:
     runs-on: ubuntu-latest
     steps:
@@ -43,8 +46,9 @@ jobs:
         distro: ubuntu20.04
         run: |
           apt-get update && apt-get install -y cmake g++ clang-tidy libcurl4-openssl-dev
-          cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_CXX_CLANG_TIDY=clang-tidy
+          cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_CXX_CLANG_TIDY=clang-tidy -DENABLE_UNIT_TESTS=ON
           cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+          cd build && make && ctest
 
   build-demo:
     runs-on: ubuntu-latest

CMakeLists.txt

@@ -6,6 +6,7 @@ project(aws-lambda-runtime
 
 option(ENABLE_LTO "Enables link-time optimization, requires compiler support." OFF)
 option(ENABLE_TESTS "Enables building the test project, requires AWS C++ SDK." OFF)
+option(ENABLE_UNIT_TESTS "Enables building the unit test project" OFF)
 option(ENABLE_SANITIZERS "Enables ASan and UBSan." OFF)
 
 add_library(${PROJECT_NAME}
@@ -90,11 +91,18 @@ else ()
     target_compile_definitions(${PROJECT_NAME} PRIVATE "AWS_LAMBDA_LOG=0")
 endif()
 
+
 #tests
 if (ENABLE_TESTS)
     enable_testing()
     add_subdirectory(tests)
 endif()
+if (ENABLE_UNIT_TESTS)
+    enable_testing()
+    add_subdirectory(unittests)
+endif()
+
+
 
 #versioning
 configure_file(

unittests/CMakeLists.txt

@@ -0,0 +1,31 @@
+project(aws-lambda-runtime-tests LANGUAGES CXX)
+
+include(FetchContent)
+FetchContent_Declare(gtest
+  QUIET
+  URL https://github.com/google/googletest/archive/v1.15.2.tar.gz
+)
+# configure build of googletest
+set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+set(BUILD_GMOCK OFF CACHE BOOL "" FORCE)
+set(INSTALL_GTEST OFF)
+FetchContent_MakeAvailable(gtest)
+
+add_executable(
+    unit_tests
+    no_op_test.cpp
+    )
+
+target_link_libraries(unit_tests
+  PRIVATE
+    gtest_main
+  )
+
+# automatic discovery of unit tests
+include(GoogleTest)
+gtest_discover_tests(unit_tests
+  PROPERTIES
+    LABELS "unit"
+  DISCOVERY_TIMEOUT  # how long to wait (in seconds) before crashing
+    240
+  )

unittests/no_op_test.cpp

@@ -0,0 +1,6 @@
+#include <gtest/gtest.h>
+
+TEST(noop, dummy_test)
+{
+    ASSERT_EQ(0, 0);
+}