FindProtobuf: add tests

Tests/CMakeLists.txt

@@ -1437,6 +1437,10 @@ ${CMake_BINARY_DIR}/bin/cmake -DDIR=dev -P ${CMake_SOURCE_DIR}/Utilities/Release
     add_subdirectory(FindPNG)
   endif()
 
+  if(CMake_TEST_FindProtobuf)
+    add_subdirectory(FindProtobuf)
+  endif()
+
   if(CMake_TEST_FindTIFF)
     add_subdirectory(FindTIFF)
   endif()

Tests/FindProtobuf/CMakeLists.txt

@@ -0,0 +1,10 @@
+add_test(NAME FindProtobuf.Test COMMAND
+  ${CMAKE_CTEST_COMMAND} -C $<CONFIGURATION>
+  --build-and-test
+  "${CMake_SOURCE_DIR}/Tests/FindProtobuf/Test"
+  "${CMake_BINARY_DIR}/Tests/FindProtobuf/Test"
+  ${build_generator_args}
+  --build-project TestFindProtobuf
+  --build-options ${build_options}
+  --test-command ${CMAKE_CTEST_COMMAND} -V -C $<CONFIGURATION>
+  )

Tests/FindProtobuf/Test/CMakeLists.txt

@@ -0,0 +1,32 @@
+cmake_minimum_required(VERSION 3.4)
+project(TestFindProtobuf CXX)
+include(CTest)
+
+find_package(Protobuf REQUIRED)
+
+add_executable(test_tgt main.cxx)
+target_link_libraries(test_tgt Protobuf::protobuf)
+add_test(NAME test_tgt COMMAND test_tgt)
+
+add_executable(test_var main.cxx)
+target_include_directories(test_var PRIVATE ${Protobuf_INCLUDE_DIRS})
+target_link_libraries(test_var PRIVATE ${Protobuf_LIBRARIES})
+add_test(NAME test_var COMMAND test_var)
+
+add_executable(test_tgt_lite main.cxx)
+target_link_libraries(test_tgt_lite Protobuf::protobuf-lite)
+add_test(NAME test_tgt_lite COMMAND test_tgt_lite)
+
+add_executable(test_var_lite main.cxx)
+target_include_directories(test_var_lite PRIVATE ${Protobuf_INCLUDE_DIRS})
+target_link_libraries(test_var_lite PRIVATE ${Protobuf_LITE_LIBRARIES})
+add_test(NAME test_var_lite COMMAND test_var_lite)
+
+add_executable(test_tgt_protoc main-protoc.cxx)
+target_link_libraries(test_tgt_protoc Protobuf::protoc)
+add_test(NAME test_tgt_protoc COMMAND test_tgt_protoc)
+
+add_executable(test_var_protoc main-protoc.cxx)
+target_include_directories(test_var_protoc PRIVATE ${Protobuf_INCLUDE_DIRS})
+target_link_libraries(test_var_protoc PRIVATE ${Protobuf_PROTOC_LIBRARIES})
+add_test(NAME test_var_protoc COMMAND test_var_protoc)

Tests/FindProtobuf/Test/main-protoc.cxx

@@ -0,0 +1,8 @@
+#include <google/protobuf/compiler/command_line_interface.h>
+
+int main()
+{
+  google::protobuf::compiler::CommandLineInterface();
+
+  return 0;
+}

Tests/FindProtobuf/Test/main.cxx

@@ -0,0 +1,8 @@
+#include <google/protobuf/stubs/common.h>
+
+int main()
+{
+  GOOGLE_PROTOBUF_VERIFY_VERSION;
+
+  return 0;
+}