diff --git a/Tests/FunctionTest/SubDirScope/CMakeLists.txt b/Tests/FunctionTest/SubDirScope/CMakeLists.txt
index b67d30ef5..4a53d2c0a 100644
--- a/Tests/FunctionTest/SubDirScope/CMakeLists.txt
+++ b/Tests/FunctionTest/SubDirScope/CMakeLists.txt
@@ -1,4 +1,14 @@
-SET(SUBDIR_DEFINED 1)
-SET(SUBDIR_UNDEFINED)
-SET(SUBDIR_DEFINED ${SUBDIR_DEFINED} PARENT_SCOPE)
-SET(SUBDIR_UNDEFINED ${SUBDIR_UNDEFINED} PARENT_SCOPE)
+SET(SUBDIR_DEFINED 1 PARENT_SCOPE)
+SET(SUBDIR_UNDEFINED PARENT_SCOPE)
+
+# The above sets should not affect the current scope.
+IF(DEFINED SUBDIR_UNDEFINED)
+  PASS("SubdirScope Undefine Test" "(${SUBDIR_UNDEFINED})")
+ELSE(DEFINED SUBDIR_UNDEFINED)
+  FAILED("SubdirScope Undefine Test" "(${SUBDIR_UNDEFINED})")
+ENDIF(DEFINED SUBDIR_UNDEFINED)
+IF(DEFINED SUBDIR_DEFINED)
+  FAILED("SubdirScope Define Test" "(${SUBDIR_DEFINED})")
+ELSE(DEFINED SUBDIR_DEFINED)
+  PASS("SubdirScope Define Test" "(${SUBDIR_DEFINED})")
+ENDIF(DEFINED SUBDIR_DEFINED)