fix cmake for tests

CMakeLists.txt

@@ -85,7 +85,8 @@ set(HDRS)
 set(PHDRS)
 
 if (TESTS)
-	set(PIP_SRC_CONCURRENT_TEST "lib/concurrent/test")
+	include(DownloadGTest)
+	set(PIP_CONCURRENT_TEST "lib/concurrent/test")
 endif()
 
 if (DEFINED ENV{QNX_HOST} OR PIP_FREERTOS)
@@ -210,7 +211,7 @@ gather_src("${PIP_SRC_IO_UTILS}" CPP_LIB_IO_UTILS HDRS PHDRS)
 # Concurrent lib
 gather_src("${PIP_SRC_CONCURRENT}" CPP_LIB_CONCURRENT HDRS PHDRS)
 
-gather_src("${PIP_SRC_CONCURRENT_TEST}" CPP_CONCURRENT_TEST HDRS PHDRS)
+gather_src("${PIP_CONCURRENT_TEST}" CPP_CONCURRENT_TEST HDRS PHDRS)
 
 # Cloud lib
 gather_src("${PIP_SRC_CLOUD}" CPP_LIB_CLOUD HDRS PHDRS)
@@ -272,12 +273,6 @@ else()
 	message(STATUS "Building PIP release version")
 endif()
 
-if (TESTS)
-	include(DownloadGTest)
-	set(CONCURRENT_TESTS 1) #"Enable tests for concurrent library"
-else()
-	set(CONCURRENT_TESTS 0)
-endif()
 
 # Check if std::iostream operators support
 if(STD_IOSTREAM)