[CMake] tests require boost headers

ref https://git.openrobots.org/projects/robotpkg/repository/robotpkg/revisions/d1814179abca3565600cb489858fec6421934e38/diff

tests/CMakeLists.txt

@@ -20,6 +20,7 @@
 #
 MACRO(DEFINE_TEST NAME)
   ADD_UNIT_TEST(${NAME} ${NAME}.cc)
+  TARGET_INCLUDE_DIRECTORIES(${NAME} PRIVATE ${Boost_INCLUDE_DIRS})
   TARGET_LINK_LIBRARIES(${NAME} ${PROJECT_NAME})
 ENDMACRO(DEFINE_TEST)
 
@@ -33,5 +34,6 @@ DEFINE_TEST(timer)
 SET(HPP_LOGGINGDIR "${CMAKE_CURRENT_BINARY_DIR}")
 CONFIG_FILES(run_debug.sh)
 ADD_EXECUTABLE(debug debug.cc)
+TARGET_INCLUDE_DIRECTORIES(debug PRIVATE ${Boost_INCLUDE_DIRS})
 TARGET_LINK_LIBRARIES(debug ${PROJECT_NAME})
 ADD_TEST(NAME debug COMMAND ${RUNTIME_OUTPUT_DIRECTORY}/run_debug.sh)