[libxml2] Enable runtests and testThreads

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 9ecf5ad6b1285cede7a37f0831a7fc531a33660a
Author: Markus Rickert <rickert fortiss org>
Date:   Thu Jun 4 00:16:15 2020 +0200

    Enable runtests and testThreads

 CMakeLists.txt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5a36125b..d208ee55 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -533,7 +533,7 @@ if(LIBXML2_WITH_PROGRAMS)
 endif()
 
 if(LIBXML2_WITH_TESTS)
-       #enable_testing()
+       enable_testing()
        set(
                TESTS
                runxmlconf
@@ -569,7 +569,7 @@ if(LIBXML2_WITH_TESTS)
                foreach(TEST ${TESTS_THREADS})
                        add_executable(${TEST} ${TEST}.c)
                        target_link_libraries(${TEST} LibXml2 Threads::Threads)
-                       #add_test(NAME ${TEST} COMMAND ${TEST})
+                       add_test(NAME ${TEST} COMMAND ${TEST} WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
                endforeach()
        endif()
 endif()