Index: Lib/test/test_zipfile.py
===================================================================
--- Lib/test/test_zipfile.py	(revision 77609)
+++ Lib/test/test_zipfile.py	(working copy)
@@ -17,8 +17,10 @@
 from random import randint, random
 from unittest import skipUnless
 
-from test.test_support import TESTFN, run_unittest, findfile, unlink
+from test.test_support import TESTFN, run_unittest, findfile, unlink, \
+                              with_writable_cwd
 
+TESTFN = os.path.basename(TESTFN)
 TESTFN2 = TESTFN + "2"
 TESTFNDIR = TESTFN + "d"
 FIXEDTEST_SIZE = 1000
@@ -1131,6 +1133,7 @@
         unlink(TESTFN2)
 
 
+@with_writable_cwd
 def test_main():
     run_unittest(TestsWithSourceFile, TestZip64InSmallFiles, OtherTests,
                  PyZipFileTests, DecryptionTests, TestsWithMultipleOpens,