move directory recreation to the test. remove self.lockfile

tests/xapian_tests/tests/test_management_commands.py

@@ -2,6 +2,7 @@
 import random
 from decimal import Decimal
 from io import StringIO
+from pathlib import Path
 from unittest import TestCase
 
 from django.core.management import call_command
@@ -45,6 +46,10 @@ def setUp(self):
             self.sample_objs.append(entry)
             entry.save()
 
+        try:
+            Path(self.backend.path).mkdir(parents=True)
+        except FileExistsError:
+            pass
         self.backend.update(self.index, BlogEntry.objects.all())
 
     def verify_indexed_document_count(self, expected):

xapian_backend.py

@@ -82,8 +82,12 @@ def filelocked(func):
 
     def wrapper(self, *args, **kwargs):
         """Run the function inside a lock."""
-        with self.filelock:
+        if self.path == MEMORY_DB_NAME:
             func(self, *args, **kwargs)
+        else:
+            Path(self.filelock.lock_file).touch()
+            with self.filelock:
+                func(self, *args, **kwargs)
 
     return wrapper
 
@@ -197,7 +201,6 @@ def __init__(self, connection_alias, **connection_options):
                 pass
 
             lockfile = Path(self.path) / "lockfile"
-            lockfile.touch()
             self.filelock = FileLock(lockfile)
 
         self.flags = connection_options.get('FLAGS', DEFAULT_XAPIAN_FLAGS)