diff -dup -r lockfile-0.12.2/test/compliancetest.py lockfile-0.12.2.new/test/compliancetest.py
--- lockfile-0.12.2/test/compliancetest.py	2015-11-25 19:29:13.000000000 +0100
+++ lockfile-0.12.2.new/test/compliancetest.py	2022-05-27 07:55:43.720523461 +0200
@@ -6,15 +6,13 @@ import lockfile
 
 
 class ComplianceTest(object):
-    def __init__(self):
-        self.saved_class = lockfile.LockFile
-
     def _testfile(self):
         """Return platform-appropriate file.  Helper for tests."""
         import tempfile
         return os.path.join(tempfile.gettempdir(), 'trash-%s' % os.getpid())
 
     def setup(self):
+        self.saved_class = lockfile.LockFile
         lockfile.LockFile = self.class_to_test
 
     def teardown(self):