Add test for objcpp compatibility

Author: xiaozhuai

src/CMakeLists.txt

@@ -30,4 +30,24 @@ if ( ATOMIC_QUEUE_BUILD_TESTS )
         NAME atomic_queue_tests
         COMMAND atomic_queue_tests
     )
+
+    if (APPLE)
+        add_executable(
+            atomic_queue_tests_objcpp
+            ${CMAKE_CURRENT_SOURCE_DIR}/tests.mm
+        )
+        set_source_files_properties(${CMAKE_CURRENT_SOURCE_DIR}/tests.mm PROPERTIES COMPILE_FLAGS "-x objective-c++")
+
+        target_link_libraries(
+            atomic_queue_tests_objcpp
+            atomic_queue
+            Boost::unit_test_framework
+        )
+
+        add_test(
+            NAME atomic_queue_tests_objcpp
+            COMMAND atomic_queue_tests_objcpp
+        )
+    endif()
+
 endif()

src/tests.mm

@@ -0,0 +1,3 @@
+// For objective-c++ compatibility tests
+#include "atomic_queue/atomic_queue.h"
+#include "tests.cc"