feat: Add project to test CMake export

.github/scripts/run-cmake-test

@@ -13,6 +13,10 @@ ctest -V
 mkdir -p deploy
 make DESTDIR="${PWD}/deploy" install
 
+mkdir "${WORKSPACE}/_import_internal_deps" && cd $_
+cmake .. -Dprometheus-cpp_DIR="${WORKSPACE}/_build_internal_deps/deploy/lib/cmake/prometheus-cpp"
+make -j$(nproc)
+
 # Build with external dependencies
 
 mkdir "${WORKSPACE}/_build" && cd $_
@@ -21,3 +25,7 @@ make -j$(nproc)
 ctest -V -LE Benchmark
 mkdir -p deploy
 make DESTDIR="${PWD}/deploy" install
+
+mkdir "${WORKSPACE}/_import" && cd $_
+cmake .. -Dprometheus-cpp_DIR="${WORKSPACE}/_build/deploy/lib/cmake/prometheus-cpp"
+make -j$(nproc)

cmake/project-import/CMakeLists.txt

@@ -0,0 +1,17 @@
+cmake_minimum_required(VERSION 3.12 FATAL_ERROR)
+
+project(prometheus-cpp-import)
+
+set(CMAKE_CXX_STANDARD 11)
+
+find_package(prometheus-cpp CONFIG REQUIRED)
+
+if(PROMETHEUS_CPP_ENABLE_PUSH)
+  add_executable(sample-client sample_client.cc)
+  target_link_libraries(sample-client PRIVATE prometheus-cpp::push)
+endif()
+
+if(PROMETHEUS_CPP_ENABLE_PULL)
+  add_executable(sample-server sample_server.cc)
+  target_link_libraries(sample-server PRIVATE prometheus-cpp::pull)
+endif()

cmake/project-import/sample_client.cc

@@ -0,0 +1 @@
+../../push/tests/integration/sample_client.cc

cmake/project-import/sample_server.cc

@@ -0,0 +1 @@
+../../pull/tests/integration/sample_server.cc