python: Fix tests on MinGW

Add the directory containing libxml2.dll with os.add_dll_directory to
make tests work on MinGW.

This has changed in Python 3.8 but for some reason, the issue only
turned up with Python 3.11 on MinGW. Contrary to documentation, copying
libxml2.dll into the directory containing the .pyd file doesn't work.

python/tests/Makefile.am

@@ -62,8 +62,7 @@ if WITH_PYTHON
 check-local:
 	@for f in $(XMLS) ; do test -f $$f || $(LN_S) $(srcdir)/$$f . ; done
 	@echo "## running Python regression tests"
-	@(export PYTHONPATH="..:../.libs:$(srcdir)/..:$$PYTHONPATH" ; \
-	  export LD_LIBRARY_PATH="$(top_builddir)/.libs:$$LD_LIBRARY_PATH" ; \
+	@(export LD_LIBRARY_PATH="$(top_builddir)/.libs:$$LD_LIBRARY_PATH" ; \
 	  export DYLD_LIBRARY_PATH="$(top_builddir)/.libs:$$DYLD_LIBRARY_PATH" ; \
 	  export PATH="$(top_builddir)/.libs:$$PATH" ; \
 	  for test in $(PYTESTS) ; do \

python/tests/attribs.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import sys
+import setup_test
 import libxml2
 
 # Memory debug specific

python/tests/build.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+import setup_test
 import libxml2
 import sys
 

python/tests/compareNodes.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import sys
+import setup_test
 import libxml2
 
 # Memory debug specific

python/tests/ctxterror.py

@@ -4,6 +4,7 @@
 # functions defined in Python.
 #
 import sys
+import setup_test
 import libxml2
 
 # Memory debug specific

python/tests/cutnpaste.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import sys
+import setup_test
 import libxml2
 
 # Memory debug specific

python/tests/dtdvalid.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+import setup_test
 import libxml2
 import sys
 

python/tests/error.py

@@ -4,6 +4,7 @@
 # functions defined in Python.
 #
 import sys
+import setup_test
 import libxml2
 
 # Memory debug specific

python/tests/inbuf.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import sys
+import setup_test
 import libxml2
 try:
     import StringIO

python/tests/indexes.py

@@ -1,6 +1,7 @@
 #!/usr/bin/env python3
 # -*- coding: ISO-8859-1 -*-
 import sys
+import setup_test
 import libxml2
 
 # Memory debug specific

python/tests/input_callback.py

@@ -3,6 +3,7 @@
 # This tests custom input callbacks
 #
 import sys
+import setup_test
 import libxml2
 try:
     import StringIO

python/tests/nsdel.py

@@ -4,6 +4,7 @@
 # allows to detect memory leaks
 #
 import sys
+import setup_test
 import libxml2
 
 instance="""<?xml version="1.0"?>

python/tests/outbuf.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import sys
+import setup_test
 import libxml2
 try:
     import StringIO

python/tests/push.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import sys
+import setup_test
 import libxml2
 
 # Memory debug specific

python/tests/pushSAX.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import sys
+import setup_test
 import libxml2
 
 # Memory debug specific

python/tests/pushSAXhtml.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import sys
+import setup_test
 import libxml2
 
 # Memory debug specific

python/tests/reader.py

@@ -3,6 +3,7 @@
 #
 # this tests the basic APIs of the XmlTextReader interface
 #
+import setup_test
 import libxml2
 import sys
 try:

python/tests/reader2.py

@@ -6,6 +6,7 @@
 import sys
 import glob
 import os
+import setup_test
 import libxml2
 try:
     import StringIO

python/tests/reader3.py

@@ -3,6 +3,7 @@
 # this tests the entities substitutions with the XmlTextReader interface
 #
 import sys
+import setup_test
 import libxml2
 try:
     import StringIO

python/tests/reader4.py

@@ -2,6 +2,7 @@
 #
 # this tests the basic APIs of the XmlTextReader interface
 #
+import setup_test
 import libxml2
 import sys
 try:

python/tests/reader5.py

@@ -3,6 +3,7 @@
 # this tests the Expand() API of the xmlTextReader interface
 # this extract the Dragon bibliography entries from the XML specification
 #
+import setup_test
 import libxml2
 import os
 import sys

python/tests/reader6.py

@@ -3,6 +3,7 @@
 # this tests the entities substitutions with the XmlTextReader interface
 #
 import sys
+import setup_test
 import libxml2
 try:
     import StringIO

python/tests/reader7.py

@@ -3,6 +3,7 @@
 # this tests the entities substitutions with the XmlTextReader interface
 #
 import sys
+import setup_test
 import libxml2
 
 # Memory debug specific

python/tests/reader8.py

@@ -3,6 +3,7 @@
 # this tests the entities substitutions with the XmlTextReader interface
 #
 import sys
+import setup_test
 import libxml2
 
 # Memory debug specific

python/tests/readererr.py

@@ -2,6 +2,7 @@
 #
 # this tests the basic APIs of the XmlTextReader interface
 #
+import setup_test
 import libxml2
 import sys
 try:

python/tests/readernext.py

@@ -3,6 +3,7 @@
 #
 # this tests the next API of the XmlTextReader interface
 #
+import setup_test
 import libxml2
 import sys
 try:

python/tests/regexp.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+import setup_test
 import libxml2
 
 # Memory debug specific

python/tests/relaxng.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+import setup_test
 import libxml2
 import sys
 

python/tests/resolver.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import sys
+import setup_test
 import libxml2
 try:
     import StringIO

python/tests/schema.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+import setup_test
 import libxml2
 import sys
 

python/tests/serialize.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import sys
+import setup_test
 import libxml2
 
 # Memory debug specific

python/tests/setup_test.py

@@ -0,0 +1,7 @@
+import os
+import sys
+
+sys.path += ('..', '../.libs')
+
+if hasattr(os, 'add_dll_directory'):
+    os.add_dll_directory(os.path.join(os.getcwd(), '..', '..', '.libs'))

python/tests/sync.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import sys
+import setup_test
 import libxml2
 
 # Memory debug specific

python/tests/thread2.py

@@ -6,6 +6,7 @@ except:
     from thread import get_ident
 from threading import Thread, Lock
 
+import setup_test
 import libxml2
 
 THREADS_COUNT = 15

python/tests/tst.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import sys
+import setup_test
 import libxml2
 
 # Memory debug specific

python/tests/tstLastError.py

@@ -1,6 +1,7 @@
 #!/usr/bin/env python3
 import sys, unittest
 
+import setup_test
 import libxml2
 
 class TestCase(unittest.TestCase):

python/tests/tstURI.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import sys
+import setup_test
 import libxml2
 
 # Memory debug specific

python/tests/tstmem.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+import setup_test
 import libxml2
 
 try:

python/tests/tstxpath.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import sys
+import setup_test
 import libxml2
 
 #memory debug specific

python/tests/validDTD.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+import setup_test
 import libxml2
 import sys
 

python/tests/validRNG.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+import setup_test
 import libxml2
 import sys
 

python/tests/validSchemas.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+import setup_test
 import libxml2
 import sys
 

python/tests/validate.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import sys
+import setup_test
 import libxml2
 
 # Memory debug specific

python/tests/walker.py

@@ -3,6 +3,7 @@
 # this tests the entities substitutions with the XmlTextReader interface
 #
 import sys
+import setup_test
 import libxml2
 
 # Memory debug specific

python/tests/xpath.py

@@ -4,6 +4,7 @@
 # allows to detect memory leaks
 #
 import sys
+import setup_test
 import libxml2
 
 # Memory debug specific

python/tests/xpathext.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import sys
+import setup_test
 import libxml2
 
 # Memory debug specific

python/tests/xpathleak.py

@@ -1,5 +1,7 @@
 #!/usr/bin/env python3
-import sys, libxml2
+import setup_test
+import libxml2
+import sys
 
 libxml2.debugMemory(True)
 

python/tests/xpathns.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 #
+import setup_test
 import libxml2
 
 expect=' xmlns:a="urn:whatevar"'

python/tests/xpathret.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import sys
+import setup_test
 import libxml2
 
 #memory debug specific