[python] [tests] Re-add once again, this time without Windows

llvm-svn: 344411
diff --git a/clang/bindings/python/tests/CMakeLists.txt b/clang/bindings/python/tests/CMakeLists.txt
index 97cd9ba..1e10f67a 100644
--- a/clang/bindings/python/tests/CMakeLists.txt
+++ b/clang/bindings/python/tests/CMakeLists.txt
@@ -7,4 +7,9 @@
     DEPENDS libclang
     WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/..)
 
-#set_property(GLOBAL APPEND PROPERTY LLVM_ADDITIONAL_TEST_TARGETS check-clang-python)
+# Tests fail on Windows, and need someone knowledgeable to fix.
+# It's not clear whether it's a test or a valid binding problem.
+if(NOT WIN32)
+    set_property(GLOBAL APPEND PROPERTY
+                 LLVM_ADDITIONAL_TEST_TARGETS check-clang-python)
+endif()