some test suite cleanup, use tempfile.mkdtemp() in setUp and

shutil.rmtree() in tearDown().  add missing tests to the list
in the test_bsddb3 suite.

21 files changed, 169 insertions, 221 deletions

diff --git a/Lib/bsddb/dbtables.py b/Lib/bsddb/dbtables.py
index cc8ba77..24793b6 100644
--- a/Lib/bsddb/dbtables.py
+++ b/Lib/bsddb/dbtables.py
@@ -10,7 +10,7 @@
 #               software has been tested, but no warranty is expressed or
 #               implied.
 #
-#   --  Gregory P. Smith <greg@electricrain.com>
+#   --  Gregory P. Smith <greg@krypto.org>
 
 # This provides a simple database table interface built on top of
 # the Python BerkeleyDB 3 interface.
diff --git a/Lib/bsddb/dbutils.py b/Lib/bsddb/dbutils.py
index daec873..94641ed 100644
--- a/Lib/bsddb/dbutils.py
+++ b/Lib/bsddb/dbutils.py
@@ -9,7 +9,7 @@
 #               software has been tested, but no warranty is expressed or
 #               implied.
 #
-# Author: Gregory P. Smith <greg@electricrain.com>
+# Author: Gregory P. Smith <greg@krypto.org>
 #
 # Note: I don't know how useful this is in reality since when a
 #       DBLockDeadlockError happens the current transaction is supposed to be
@@ -19,13 +19,7 @@
 #
 #------------------------------------------------------------------------
 
-
-#
-# import the time.sleep function in a namespace safe way to allow
-# "from bsddb.dbutils import *"
-#
-from time import sleep as _sleep
-
+import time
 from . import db
 
 # always sleep at least N seconds between retrys
@@ -60,17 +54,22 @@ def DeadlockWrap(function, *_args, **_kwargs):
     while True:
         try:
             return function(*_args, **_kwargs)
-        except db.DBLockDeadlockError:
+        except db.DBLockDeadlockError as e:
             if _deadlock_VerboseFile:
                 _deadlock_VerboseFile.write(
-                    'dbutils.DeadlockWrap: sleeping %1.3f\n' % sleeptime)
-            _sleep(sleeptime)
+                    'bsddb.dbutils.DeadlockWrap: ' +
+                    'sleeping %1.3f\n' % sleeptime)
+            time.sleep(sleeptime)
             # exponential backoff in the sleep time
             sleeptime *= 2
             if sleeptime > _deadlock_MaxSleepTime:
                 sleeptime = _deadlock_MaxSleepTime
             max_retries -= 1
             if max_retries == -1:
+                if _deadlock_VerboseFile:
+                    _deadlock_VerboseFile.write(
+                    'bsddb.dbutils.DeadlockWrap: ' +
+                    'max_retries reached, reraising %s\n' % e)
                 raise
 
 
diff --git a/Lib/bsddb/test/test_all.py b/Lib/bsddb/test/test_all.py
index b3ef5b9..b818a33 100644
--- a/Lib/bsddb/test/test_all.py
+++ b/Lib/bsddb/test/test_all.py
@@ -11,13 +11,13 @@ except ImportError:
     # For Python 2.3
     from bsddb import db
 
-verbose = 0
+verbose = False
 if 'verbose' in sys.argv:
-    verbose = 1
+    verbose = True
     sys.argv.remove('verbose')
 
 if 'silent' in sys.argv:  # take care of old flag, just in case
-    verbose = 0
+    verbose = False
     sys.argv.remove('silent')
 
 
diff --git a/Lib/bsddb/test/test_associate.py b/Lib/bsddb/test/test_associate.py
index f0dbae7..7d0dceb 100644
--- a/Lib/bsddb/test/test_associate.py
+++ b/Lib/bsddb/test/test_associate.py
@@ -2,6 +2,7 @@
 TestCases for DB.associate.
 """
 
+import shutil
 import sys, os
 import tempfile
 import time
@@ -14,7 +15,7 @@ except ImportError:
     have_threads = 0
 
 import unittest
-from .test_all import verbose
+from bsddb.test.test_all import verbose
 
 try:
     # For Pythons w/distutils pybsddb
@@ -91,25 +92,14 @@ musicdata = {
 class AssociateErrorTestCase(unittest.TestCase):
     def setUp(self):
         self.filename = self.__class__.__name__ + '.db'
-        homeDir = os.path.join(tempfile.gettempdir(), 'db_home')
-        self.homeDir = homeDir
-        try:
-            os.mkdir(homeDir)
-        except os.error:
-            import glob
-            files = glob.glob(os.path.join(self.homeDir, '*'))
-            for file in files:
-                os.remove(file)
+        self.homeDir = tempfile.mkdtemp()
         self.env = db.DBEnv()
-        self.env.open(homeDir, db.DB_CREATE | db.DB_INIT_MPOOL)
+        self.env.open(self.homeDir, db.DB_CREATE | db.DB_INIT_MPOOL)
 
     def tearDown(self):
         self.env.close()
         self.env = None
-        import glob
-        files = glob.glob(os.path.join(self.homeDir, '*'))
-        for file in files:
-            os.remove(file)
+        shutil.rmtree(self.homeDir)
 
 
     def test00_associateDBError(self):
@@ -151,27 +141,16 @@ class AssociateTestCase(unittest.TestCase):
 
     def setUp(self):
         self.filename = self.__class__.__name__ + '.db'
-        homeDir = os.path.join(os.path.dirname(sys.argv[0]), 'db_home')
-        self.homeDir = homeDir
-        try:
-            os.mkdir(homeDir)
-        except os.error:
-            import glob
-            files = glob.glob(os.path.join(self.homeDir, '*'))
-            for file in files:
-                os.remove(file)
+        self.homeDir = tempfile.mkdtemp()
         self.env = db.DBEnv()
-        self.env.open(homeDir, db.DB_CREATE | db.DB_INIT_MPOOL |
+        self.env.open(self.homeDir, db.DB_CREATE | db.DB_INIT_MPOOL |
                                db.DB_INIT_LOCK | db.DB_THREAD | self.envFlags)
 
     def tearDown(self):
         self.closeDB()
         self.env.close()
         self.env = None
-        import glob
-        files = glob.glob(os.path.join(self.homeDir, '*'))
-        for file in files:
-            os.remove(file)
+        shutil.rmtree(self.homeDir)
 
     def addDataToDB(self, d, txn=None):
         for key, value in musicdata.items():
diff --git a/Lib/bsddb/test/test_basics.py b/Lib/bsddb/test/test_basics.py
index d7b2d2f..8d7f15d 100644
--- a/Lib/bsddb/test/test_basics.py
+++ b/Lib/bsddb/test/test_basics.py
@@ -20,7 +20,7 @@ except ImportError:
     # For Python 2.3
     from bsddb import db
 
-from .test_all import verbose
+from bsddb.test.test_all import verbose
 
 DASH = b'-'
 letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
@@ -54,27 +54,21 @@ class BasicTestCase(unittest.TestCase):
 
     def setUp(self):
         if self.useEnv:
-            homeDir = os.path.join(tempfile.gettempdir(), 'db_home')
-            self.homeDir = homeDir
-            try:
-                shutil.rmtree(homeDir)
-            except OSError as e:
-                # unix returns ENOENT, windows returns ESRCH
-                if e.errno not in (errno.ENOENT, errno.ESRCH): raise
-            os.mkdir(homeDir)
+            self.homeDir = tempfile.mkdtemp()
             try:
                 self.env = db.DBEnv()
                 self.env.set_lg_max(1024*1024)
                 self.env.set_tx_max(30)
                 self.env.set_tx_timestamp(int(time.time()))
                 self.env.set_flags(self.envsetflags, 1)
-                self.env.open(homeDir, self.envflags | db.DB_CREATE)
-                tempfile.tempdir = homeDir
+                self.env.open(self.homeDir, self.envflags | db.DB_CREATE)
+                old_tempfile_tempdir = tempfile.tempdir
+                tempfile.tempdir = self.homeDir
                 self.filename = os.path.split(tempfile.mktemp())[1]
-                tempfile.tempdir = None
+                tempfile.tempdir = old_tempfile_tempdir
             # Yes, a bare except is intended, since we're re-raising the exc.
             except:
-                shutil.rmtree(homeDir)
+                shutil.rmtree(self.homeDir)
                 raise
         else:
             self.env = None
diff --git a/Lib/bsddb/test/test_compare.py b/Lib/bsddb/test/test_compare.py
index 886c20d..d49aab7 100644
--- a/Lib/bsddb/test/test_compare.py
+++ b/Lib/bsddb/test/test_compare.py
@@ -2,10 +2,10 @@
 TestCases for python DB Btree key comparison function.
 """
 
+import shutil
 import sys, os, re
 from io import StringIO
-
-from . import test_all
+import tempfile
 
 import unittest
 try:
@@ -18,15 +18,18 @@ except ImportError:
 lexical_cmp = cmp
 
 def lowercase_cmp(left, right):
-    return cmp (left.lower(), right.lower())
+    return cmp (str(left, encoding='ascii').lower(),
+                str(right, encoding='ascii').lower())
 
 def make_reverse_comparator (cmp):
     def reverse (left, right, delegate=cmp):
         return - delegate (left, right)
     return reverse
 
-_expected_lexical_test_data = ['', 'CCCP', 'a', 'aaa', 'b', 'c', 'cccce', 'ccccf']
-_expected_lowercase_test_data = ['', 'a', 'aaa', 'b', 'c', 'CC', 'cccce', 'ccccf', 'CCCP']
+_expected_lexical_test_data = [bytes(_) for _ in
+        ('', 'CCCP', 'a', 'aaa', 'b', 'c', 'cccce', 'ccccf')]
+_expected_lowercase_test_data = [bytes(_) for _ in
+        ('', 'a', 'aaa', 'b', 'c', 'CC', 'cccce', 'ccccf', 'CCCP')]
 
 class ComparatorTests (unittest.TestCase):
     def comparator_test_helper (self, comparator, expected_data):
@@ -52,15 +55,10 @@ class AbstractBtreeKeyCompareTestCase (unittest.TestCase):
 
     def setUp (self):
         self.filename = self.__class__.__name__ + '.db'
-        homeDir = os.path.join (os.path.dirname (sys.argv[0]), 'db_home')
-        self.homeDir = homeDir
-        try:
-            os.mkdir (homeDir)
-        except os.error:
-            pass
+        self.homeDir = tempfile.mkdtemp()
 
         env = db.DBEnv ()
-        env.open (homeDir,
+        env.open (self.homeDir,
                   db.DB_CREATE | db.DB_INIT_MPOOL
                   | db.DB_INIT_LOCK | db.DB_THREAD)
         self.env = env
@@ -70,8 +68,7 @@ class AbstractBtreeKeyCompareTestCase (unittest.TestCase):
         if self.env is not None:
             self.env.close ()
             self.env = None
-        import glob
-        map (os.remove, glob.glob (os.path.join (self.homeDir, '*')))
+        shutil.rmtree(self.homeDir)
 
     def addDataToDB (self, data):
         i = 0
@@ -110,7 +107,7 @@ class AbstractBtreeKeyCompareTestCase (unittest.TestCase):
                 self.failUnless (index < len (expected),
                                  "to many values returned from cursor")
                 self.failUnless (expected[index] == key,
-                                 "expected value `%s' at %d but got `%s'"
+                                 "expected value %r at %d but got %r"
                                  % (expected[index], index, key))
                 index = index + 1
                 rec = curs.next ()
@@ -140,10 +137,10 @@ class BtreeKeyCompareTestCase (AbstractBtreeKeyCompareTestCase):
         def socialist_comparator (l, r):
             return 0
         self.createDB (socialist_comparator)
-        self.addDataToDB (['b', 'a', 'd'])
+        self.addDataToDB ([b'b', b'a', b'd'])
         # all things being equal the first key will be the only key
         # in the database...  (with the last key's value fwiw)
-        self.finishTest (['b'])
+        self.finishTest ([b'b'])
 
 
 class BtreeExceptionsTestCase (AbstractBtreeKeyCompareTestCase):
@@ -247,4 +244,4 @@ def test_suite ():
     return res
 
 if __name__ == '__main__':
-    unittest.main (defaultTest = 'suite')
+    unittest.main (defaultTest = 'test_suite')
diff --git a/Lib/bsddb/test/test_compat.py b/Lib/bsddb/test/test_compat.py
index 751a2bb..1081807 100644
--- a/Lib/bsddb/test/test_compat.py
+++ b/Lib/bsddb/test/test_compat.py
@@ -7,7 +7,7 @@ import sys, os
 import unittest
 import tempfile
 
-from .test_all import verbose
+from bsddb.test.test_all import verbose
 
 from bsddb import db, hashopen, btopen, rnopen
 
diff --git a/Lib/bsddb/test/test_cursor_pget_bug.py b/Lib/bsddb/test/test_cursor_pget_bug.py
index ac60cb4..2af12bf 100644
--- a/Lib/bsddb/test/test_cursor_pget_bug.py
+++ b/Lib/bsddb/test/test_cursor_pget_bug.py
@@ -1,5 +1,7 @@
 import unittest
 import sys, os, glob
+import shutil
+import tempfile
 
 from bsddb import db
 
@@ -11,11 +13,7 @@ class pget_bugTestCase(unittest.TestCase):
     db_name = 'test-cursor_pget.db'
 
     def setUp(self):
-        self.homeDir = os.path.join(os.path.dirname(sys.argv[0]), 'db_home')
-        try:
-            os.mkdir(self.homeDir)
-        except os.error:
-            pass
+        self.homeDir = tempfile.mkdtemp()
         self.env = db.DBEnv()
         self.env.open(self.homeDir, db.DB_CREATE | db.DB_INIT_MPOOL)
         self.primary_db = db.DB(self.env)
@@ -36,9 +34,7 @@ class pget_bugTestCase(unittest.TestCase):
         del self.secondary_db
         del self.primary_db
         del self.env
-        for file in glob.glob(os.path.join(self.homeDir, '*')):
-            os.remove(file)
-        os.removedirs(self.homeDir)
+        shutil.rmtree(self.homeDir)
 
     def test_pget(self):
         cursor = self.secondary_db.cursor()
diff --git a/Lib/bsddb/test/test_dbobj.py b/Lib/bsddb/test/test_dbobj.py
index f8353f3..22d46bc 100644
--- a/Lib/bsddb/test/test_dbobj.py
+++ b/Lib/bsddb/test/test_dbobj.py
@@ -1,4 +1,5 @@
 
+import shutil
 import sys, os
 import unittest
 import glob
@@ -16,23 +17,17 @@ except ImportError:
 
 class dbobjTestCase(unittest.TestCase):
     """Verify that dbobj.DB and dbobj.DBEnv work properly"""
-    db_home = 'db_home'
     db_name = 'test-dbobj.db'
 
     def setUp(self):
-        homeDir = os.path.join(tempfile.gettempdir(), 'db_home')
-        self.homeDir = homeDir
-        try: os.mkdir(homeDir)
-        except os.error: pass
+        self.homeDir = tempfile.mkdtemp()
 
     def tearDown(self):
         if hasattr(self, 'db'):
             del self.db
         if hasattr(self, 'env'):
             del self.env
-        files = glob.glob(os.path.join(self.homeDir, '*'))
-        for file in files:
-            os.remove(file)
+        shutil.rmtree(self.homeDir)
 
     def test01_both(self):
         class TestDBEnv(dbobj.DBEnv): pass
diff --git a/Lib/bsddb/test/test_dbshelve.py b/Lib/bsddb/test/test_dbshelve.py
index 9c62043..7fef89c 100644
--- a/Lib/bsddb/test/test_dbshelve.py
+++ b/Lib/bsddb/test/test_dbshelve.py
@@ -3,12 +3,13 @@ TestCases for checking dbShelve objects.
 """
 
 import os
+import shutil
 import tempfile, random
 import unittest
 
 from bsddb import db, dbshelve
 
-from .test_all import verbose
+from bsddb.test.test_all import verbose
 
 
 #----------------------------------------------------------------------
@@ -78,9 +79,15 @@ class DBShelveTestCase(unittest.TestCase):
             print("Running %s.test01_basics..." % self.__class__.__name__)
 
         self.populateDB(self.d)
+        if verbose:
+            print(1, self.d.keys())
         self.d.sync()
+        if verbose:
+            print(2, self.d.keys())
         self.do_close()
         self.do_open()
+        if verbose:
+            print(3, self.d.keys())
         d = self.d
 
         l = len(d)
@@ -93,15 +100,15 @@ class DBShelveTestCase(unittest.TestCase):
             print("keys:", k)
             print("stats:", s)
 
-        assert 0 == d.has_key(b'bad key')
-        assert 1 == d.has_key(b'IA')
-        assert 1 == d.has_key(b'OA')
+        self.assertFalse(d.has_key(b'bad key'))
+        self.assertTrue(d.has_key(b'IA'), d.keys())
+        self.assertTrue(d.has_key(b'OA'))
 
         d.delete(b'IA')
         del d[b'OA']
-        assert 0 == d.has_key(b'IA')
-        assert 0 == d.has_key(b'OA')
-        assert len(d) == l-2
+        self.assertFalse(d.has_key(b'IA'))
+        self.assertFalse(d.has_key(b'OA'))
+        self.assertEqual(len(d), l-2)
 
         values = []
         for key in d.keys():
@@ -112,28 +119,28 @@ class DBShelveTestCase(unittest.TestCase):
             self.checkrec(key, value)
 
         dbvalues = sorted(d.values(), key=lambda x: (str(type(x)), x))
-        assert len(dbvalues) == len(d.keys())
+        self.assertEqual(len(dbvalues), len(d.keys()))
         values.sort(key=lambda x: (str(type(x)), x))
-        assert values == dbvalues, "%r != %r" % (values, dbvalues)
+        self.assertEqual(values, dbvalues, "%r != %r" % (values, dbvalues))
 
         items = d.items()
-        assert len(items) == len(values)
+        self.assertEqual(len(items), len(values))
 
         for key, value in items:
             self.checkrec(key, value)
 
-        assert d.get(b'bad key') == None
-        assert d.get(b'bad key', None) == None
-        assert d.get(b'bad key', b'a string') == b'a string'
-        assert d.get(b'bad key', [1, 2, 3]) == [1, 2, 3]
+        self.assertEqual(d.get(b'bad key'), None)
+        self.assertEqual(d.get(b'bad key', None), None)
+        self.assertEqual(d.get(b'bad key', b'a string'), b'a string')
+        self.assertEqual(d.get(b'bad key', [1, 2, 3]), [1, 2, 3])
 
         d.set_get_returns_none(0)
         self.assertRaises(db.DBNotFoundError, d.get, b'bad key')
         d.set_get_returns_none(1)
 
         d.put(b'new key', b'new data')
-        assert d.get(b'new key') == b'new data'
-        assert d[b'new key'] == b'new data'
+        self.assertEqual(d.get(b'new key'), b'new data')
+        self.assertEqual(d[b'new key'], b'new data')
 
 
 
@@ -157,7 +164,7 @@ class DBShelveTestCase(unittest.TestCase):
             rec = c.next()
         del c
 
-        assert count == len(d)
+        self.assertEqual(count, len(d))
 
         count = 0
         c = d.cursor()
@@ -170,7 +177,7 @@ class DBShelveTestCase(unittest.TestCase):
             self.checkrec(key, value)
             rec = c.prev()
 
-        assert count == len(d)
+        self.assertEqual(count, len(d))
 
         c.set(b'SS')
         key, value = c.current()
@@ -233,15 +240,15 @@ class ThreadHashShelveTestCase(BasicShelveTestCase):
 #----------------------------------------------------------------------
 
 class BasicEnvShelveTestCase(DBShelveTestCase):
+    def setUp(self):
+        self.homeDir = tempfile.mkdtemp()
+        self.filename = 'dbshelve_db_file.db'
+        self.do_open()
+
     def do_open(self):
-        self.homeDir = homeDir = os.path.join(
-            tempfile.gettempdir(), 'db_home')
-        try: os.mkdir(homeDir)
-        except os.error: pass
         self.env = db.DBEnv()
-        self.env.open(homeDir, self.envflags | db.DB_INIT_MPOOL | db.DB_CREATE)
+        self.env.open(self.homeDir, self.envflags | db.DB_INIT_MPOOL | db.DB_CREATE)
 
-        self.filename = os.path.split(self.filename)[1]
         self.d = dbshelve.DBShelf(self.env)
         self.d.open(self.filename, self.dbtype, self.dbflags)
 
@@ -253,10 +260,7 @@ class BasicEnvShelveTestCase(DBShelveTestCase):
 
     def tearDown(self):
         self.do_close()
-        import glob
-        files = glob.glob(os.path.join(self.homeDir, '*'))
-        for file in files:
-            os.remove(file)
+        shutil.rmtree(self.homeDir)
 
 
 
diff --git a/Lib/bsddb/test/test_dbtables.py b/Lib/bsddb/test/test_dbtables.py
index 4b3370f..ddb9644 100644
--- a/Lib/bsddb/test/test_dbtables.py
+++ b/Lib/bsddb/test/test_dbtables.py
@@ -16,16 +16,17 @@
 #               software has been tested, but no warranty is expressed or
 #               implied.
 #
-#   --  Gregory P. Smith <greg@electricrain.com>
+#   --  Gregory P. Smith <greg@krypto.org>
 #
 # $Id$
 
+import shutil
 import sys, os, re
 import pickle
 import tempfile
 
 import unittest
-from .test_all import verbose
+from bsddb.test.test_all import verbose
 
 try:
     # For Pythons w/distutils pybsddb
@@ -39,23 +40,16 @@ except ImportError:
 #----------------------------------------------------------------------
 
 class TableDBTestCase(unittest.TestCase):
-    db_home = 'db_home'
     db_name = 'test-table.db'
 
     def setUp(self):
-        homeDir = os.path.join(tempfile.gettempdir(), 'db_home')
-        self.homeDir = homeDir
-        try: os.mkdir(homeDir)
-        except os.error: pass
+        self.homeDir = tempfile.mkdtemp()
         self.tdb = dbtables.bsdTableDB(
-            filename='tabletest.db', dbhome=homeDir, create=1)
+            filename='tabletest.db', dbhome=self.homeDir, create=1)
 
     def tearDown(self):
         self.tdb.close()
-        import glob
-        files = glob.glob(os.path.join(self.homeDir, '*'))
-        for file in files:
-            os.remove(file)
+        shutil.rmtree(self.homeDir)
 
     def test01(self):
         tabname = "test01"
diff --git a/Lib/bsddb/test/test_env_close.py b/Lib/bsddb/test/test_env_close.py
index 1a6a804..2ef5867 100644
--- a/Lib/bsddb/test/test_env_close.py
+++ b/Lib/bsddb/test/test_env_close.py
@@ -3,6 +3,7 @@ is closed before its DB objects.
 """
 
 import os
+import shutil
 import sys
 import tempfile
 import glob
@@ -15,7 +16,7 @@ except ImportError:
     # For Python 2.3
     from bsddb import db
 
-from .test_all import verbose
+from bsddb.test.test_all import verbose
 
 # We're going to get warnings in this module about trying to close the db when
 # its env is already closed.  Let's just ignore those.
@@ -33,17 +34,14 @@ else:
 
 class DBEnvClosedEarlyCrash(unittest.TestCase):
     def setUp(self):
-        self.homeDir = os.path.join(tempfile.gettempdir(), 'db_home')
-        try: os.mkdir(self.homeDir)
-        except os.error: pass
+        self.homeDir = tempfile.mkdtemp()
+        old_tempfile_tempdir = tempfile.tempdir
         tempfile.tempdir = self.homeDir
         self.filename = os.path.split(tempfile.mktemp())[1]
-        tempfile.tempdir = None
+        tempfile.tempdir = old_tempfile_tempdir
 
     def tearDown(self):
-        files = glob.glob(os.path.join(self.homeDir, '*'))
-        for file in files:
-            os.remove(file)
+        shutil.rmtree(self.homeDir)
 
 
     def test01_close_dbenv_before_db(self):
diff --git a/Lib/bsddb/test/test_get_none.py b/Lib/bsddb/test/test_get_none.py
index 8829944..02840e6 100644
--- a/Lib/bsddb/test/test_get_none.py
+++ b/Lib/bsddb/test/test_get_none.py
@@ -9,7 +9,7 @@ import unittest
 
 from bsddb import db
 
-from .test_all import verbose
+from bsddb.test.test_all import verbose
 
 letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
 
diff --git a/Lib/bsddb/test/test_join.py b/Lib/bsddb/test/test_join.py
index 0e41152..5657bd7 100644
--- a/Lib/bsddb/test/test_join.py
+++ b/Lib/bsddb/test/test_join.py
@@ -1,6 +1,7 @@
 """TestCases for using the DB.join and DBCursor.join_item methods.
 """
 
+import shutil
 import sys, os
 import tempfile
 import time
@@ -13,7 +14,7 @@ except ImportError:
     have_threads = 0
 
 import unittest
-from .test_all import verbose
+from bsddb.test.test_all import verbose
 
 from bsddb import db, dbshelve, StringKeys
 
@@ -47,19 +48,13 @@ class JoinTestCase(unittest.TestCase):
 
     def setUp(self):
         self.filename = self.__class__.__name__ + '.db'
-        homeDir = os.path.join(tempfile.gettempdir(), 'db_home')
-        self.homeDir = homeDir
-        try: os.mkdir(homeDir)
-        except os.error: pass
+        self.homeDir = tempfile.mkdtemp()
         self.env = db.DBEnv()
-        self.env.open(homeDir, db.DB_CREATE | db.DB_INIT_MPOOL | db.DB_INIT_LOCK )
+        self.env.open(self.homeDir, db.DB_CREATE | db.DB_INIT_MPOOL | db.DB_INIT_LOCK )
 
     def tearDown(self):
         self.env.close()
-        import glob
-        files = glob.glob(os.path.join(self.homeDir, '*'))
-        for file in files:
-            os.remove(file)
+        shutil.rmtree(self.homeDir)
 
     def test01_join(self):
         if verbose:
diff --git a/Lib/bsddb/test/test_lock.py b/Lib/bsddb/test/test_lock.py
index 063ffbd..fcab283 100644
--- a/Lib/bsddb/test/test_lock.py
+++ b/Lib/bsddb/test/test_lock.py
@@ -2,6 +2,7 @@
 TestCases for testing the locking sub-system.
 """
 
+import shutil
 import sys, os
 import tempfile
 import time
@@ -15,7 +16,7 @@ except ImportError:
 
 
 import unittest
-from .test_all import verbose
+from bsddb.test.test_all import verbose
 
 try:
     # For Pythons w/distutils pybsddb
@@ -30,21 +31,15 @@ except ImportError:
 class LockingTestCase(unittest.TestCase):
 
     def setUp(self):
-        homeDir = os.path.join(tempfile.gettempdir(), 'db_home')
-        self.homeDir = homeDir
-        try: os.mkdir(homeDir)
-        except os.error: pass
+        self.homeDir = tempfile.mkdtemp()
         self.env = db.DBEnv()
-        self.env.open(homeDir, db.DB_THREAD | db.DB_INIT_MPOOL |
+        self.env.open(self.homeDir, db.DB_THREAD | db.DB_INIT_MPOOL |
                       db.DB_INIT_LOCK | db.DB_CREATE)
 
 
     def tearDown(self):
         self.env.close()
-        import glob
-        files = glob.glob(os.path.join(self.homeDir, '*'))
-        for file in files:
-            os.remove(file)
+        shutil.rmtree(self.homeDir)
 
 
     def test01_simple(self):
diff --git a/Lib/bsddb/test/test_misc.py b/Lib/bsddb/test/test_misc.py
index 6b2df07..15098b7 100644
--- a/Lib/bsddb/test/test_misc.py
+++ b/Lib/bsddb/test/test_misc.py
@@ -2,6 +2,7 @@
 """
 
 import os
+import shutil
 import sys
 import unittest
 import tempfile
@@ -18,22 +19,14 @@ except ImportError:
 class MiscTestCase(unittest.TestCase):
     def setUp(self):
         self.filename = self.__class__.__name__ + '.db'
-        homeDir = os.path.join(tempfile.gettempdir(), 'db_home')
-        self.homeDir = homeDir
-        try:
-            os.mkdir(homeDir)
-        except OSError:
-            pass
+        self.homeDir = tempfile.mkdtemp()
 
     def tearDown(self):
         try:
             os.remove(self.filename)
         except OSError:
             pass
-        import glob
-        files = glob.glob(os.path.join(self.homeDir, '*'))
-        for file in files:
-            os.remove(file)
+        shutil.rmtree(self.homeDir)
 
     def test01_badpointer(self):
         dbs = dbshelve.open(self.filename)
diff --git a/Lib/bsddb/test/test_pickle.py b/Lib/bsddb/test/test_pickle.py
index 66d421c..3bedab7 100644
--- a/Lib/bsddb/test/test_pickle.py
+++ b/Lib/bsddb/test/test_pickle.py
@@ -1,6 +1,8 @@
 
+import shutil
 import sys, os
 import pickle
+import tempfile
 import unittest
 import glob
 
@@ -16,33 +18,27 @@ except ImportError as e:
 
 class pickleTestCase(unittest.TestCase):
     """Verify that DBError can be pickled and unpickled"""
-    db_home = 'db_home'
     db_name = 'test-dbobj.db'
 
     def setUp(self):
-        homeDir = os.path.join(os.path.dirname(sys.argv[0]), 'db_home')
-        self.homeDir = homeDir
-        try: os.mkdir(homeDir)
-        except os.error: pass
+        self.homeDir = tempfile.mkdtemp()
 
     def tearDown(self):
         if hasattr(self, 'db'):
             del self.db
         if hasattr(self, 'env'):
             del self.env
-        files = glob.glob(os.path.join(self.homeDir, '*'))
-        for file in files:
-            os.remove(file)
+        shutil.rmtree(self.homeDir)
 
     def _base_test_pickle_DBError(self, pickle):
         self.env = db.DBEnv()
         self.env.open(self.homeDir, db.DB_CREATE | db.DB_INIT_MPOOL)
         self.db = db.DB(self.env)
         self.db.open(self.db_name, db.DB_HASH, db.DB_CREATE)
-        self.db.put('spam', 'eggs')
-        assert self.db['spam'] == 'eggs'
+        self.db.put(b'spam', b'eggs')
+        self.assertEqual(self.db[b'spam'], b'eggs')
         try:
-            self.db.put('spam', 'ham', flags=db.DB_NOOVERWRITE)
+            self.db.put(b'spam', b'ham', flags=db.DB_NOOVERWRITE)
         except db.DBError as egg:
             pickledEgg = pickle.dumps(egg)
             #print repr(pickledEgg)
@@ -50,7 +46,7 @@ class pickleTestCase(unittest.TestCase):
             if rottenEgg.args != egg.args or type(rottenEgg) != type(egg):
                 raise Exception(rottenEgg, '!=', egg)
         else:
-            raise Exception("where's my DBError exception?!?")
+            self.fail("where's my DBError exception?!?")
 
         self.db.close()
         self.env.close()
diff --git a/Lib/bsddb/test/test_queue.py b/Lib/bsddb/test/test_queue.py
index 2cf5a8c..dfae95b 100644
--- a/Lib/bsddb/test/test_queue.py
+++ b/Lib/bsddb/test/test_queue.py
@@ -14,7 +14,7 @@ except ImportError:
     # For Python 2.3
     from bsddb import db
 
-from .test_all import verbose
+from bsddb.test.test_all import verbose
 
 letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
 
diff --git a/Lib/bsddb/test/test_recno.py b/Lib/bsddb/test/test_recno.py
index 25482d5..1ebaf79 100644
--- a/Lib/bsddb/test/test_recno.py
+++ b/Lib/bsddb/test/test_recno.py
@@ -2,13 +2,14 @@
 """
 
 import os
+import shutil
 import sys
 import errno
 import tempfile
 from pprint import pprint
 import unittest
 
-from .test_all import verbose
+from bsddb.test.test_all import verbose
 
 try:
     # For Pythons w/distutils pybsddb
@@ -25,12 +26,14 @@ letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
 class SimpleRecnoTestCase(unittest.TestCase):
     def setUp(self):
         self.filename = tempfile.mktemp()
+        self.homeDir = tempfile.mkdtemp()
 
     def tearDown(self):
         try:
             os.remove(self.filename)
         except OSError as e:
             if e.errno != errno.EEXIST: raise
+        shutil.rmtree(self.homeDir)
 
     def test01_basic(self):
         d = db.DB()
@@ -203,10 +206,7 @@ class SimpleRecnoTestCase(unittest.TestCase):
         just a line in the file, but you can set a different record delimiter
         if needed.
         """
-        homeDir = os.path.join(tempfile.gettempdir(), 'db_home')
-        source = os.path.join(homeDir, 'test_recno.txt')
-        if not os.path.isdir(homeDir):
-            os.mkdir(homeDir)
+        source = os.path.join(self.homeDir, 'test_recno.txt')
         f = open(source, 'w') # create the file
         f.close()
 
diff --git a/Lib/bsddb/test/test_sequence.py b/Lib/bsddb/test/test_sequence.py
index 3329b76..25a354c 100644
--- a/Lib/bsddb/test/test_sequence.py
+++ b/Lib/bsddb/test/test_sequence.py
@@ -1,5 +1,6 @@
 import unittest
 import os
+import shutil
 import sys
 import tempfile
 import glob
@@ -10,20 +11,17 @@ try:
 except ImportError:
     from bsddb import db
 
-from .test_all import verbose
+from bsddb.test.test_all import verbose
 
 
 class DBSequenceTest(unittest.TestCase):
     def setUp(self):
         self.int_32_max = 0x100000000
-        self.homeDir = os.path.join(os.path.dirname(sys.argv[0]), 'db_home')
-        try:
-            os.mkdir(self.homeDir)
-        except os.error:
-            pass
+        self.homeDir = tempfile.mkdtemp()
+        old_tempfile_tempdir = tempfile.tempdir
         tempfile.tempdir = self.homeDir
         self.filename = os.path.split(tempfile.mktemp())[1]
-        tempfile.tempdir = None
+        tempfile.tempdir = old_tempfile_tempdir
 
         self.dbenv = db.DBEnv()
         self.dbenv.open(self.homeDir, db.DB_CREATE | db.DB_INIT_MPOOL, 0o666)
@@ -41,9 +39,7 @@ class DBSequenceTest(unittest.TestCase):
             self.dbenv.close()
             del self.dbenv
 
-        files = glob.glob(os.path.join(self.homeDir, '*'))
-        for file in files:
-            os.remove(file)
+        shutil.rmtree(self.homeDir)
 
     def test_get(self):
         self.seq = db.DBSequence(self.d, flags=0)
diff --git a/Lib/bsddb/test/test_thread.py b/Lib/bsddb/test/test_thread.py
index 07133d3..01de09d 100644
--- a/Lib/bsddb/test/test_thread.py
+++ b/Lib/bsddb/test/test_thread.py
@@ -25,7 +25,7 @@ except NameError:
         pass
 
 import unittest
-from .test_all import verbose
+from bsddb.test.test_all import verbose
 
 try:
     # For Pythons w/distutils pybsddb
@@ -47,15 +47,10 @@ class BaseThreadedTestCase(unittest.TestCase):
         if verbose:
             dbutils._deadlock_VerboseFile = sys.stdout
 
-        homeDir = os.path.join(tempfile.gettempdir(), 'db_home')
-        self.homeDir = homeDir
-        try:
-            os.mkdir(homeDir)
-        except OSError as e:
-            if e.errno != errno.EEXIST: raise
+        self.homeDir = tempfile.mkdtemp()
         self.env = db.DBEnv()
         self.setEnvOpts()
-        self.env.open(homeDir, self.envflags | db.DB_CREATE)
+        self.env.open(self.homeDir, self.envflags | db.DB_CREATE)
 
         self.filename = self.__class__.__name__ + '.db'
         self.d = db.DB(self.env)
@@ -74,6 +69,28 @@ class BaseThreadedTestCase(unittest.TestCase):
     def makeData(self, key):
         return DASH.join([key] * 5)
 
+    def _writerThread(self, *args, **kwargs):
+        raise RuntimeError("must override this in a subclass")
+
+    def _readerThread(self, *args, **kwargs):
+        raise RuntimeError("must override this in a subclass")
+
+    def writerThread(self, *args, **kwargs):
+        try:
+            self._writerThread(*args, **kwargs)
+        except db.DBLockDeadlockError:
+            if verbose:
+                print(currentThread().getName(), 'died from', e)
+
+    def readerThread(self, *args, **kwargs):
+        try:
+            self._readerThread(*args, **kwargs)
+        except db.DBLockDeadlockError as e:
+            if verbose:
+                print(currentThread().getName(), 'died from', e)
+
+
+
 
 #----------------------------------------------------------------------
 
@@ -111,7 +128,7 @@ class ConcurrentDataStoreBase(BaseThreadedTestCase):
         for t in threads:
             t.join()
 
-    def writerThread(self, d, howMany, writerNum):
+    def _writerThread(self, d, howMany, writerNum):
         #time.sleep(0.01 * writerNum + 0.01)
         name = currentThread().getName()
         start = howMany * writerNum
@@ -122,7 +139,7 @@ class ConcurrentDataStoreBase(BaseThreadedTestCase):
         for x in range(start, stop):
             key = ('%04d' % x).encode("ascii")
             dbutils.DeadlockWrap(d.put, key, self.makeData(key),
-                                 max_retries=12)
+                                 max_retries=20)
             if verbose and x % 100 == 0:
                 print("%s: records %d - %d finished" % (name, start, x))
 
@@ -143,7 +160,7 @@ class ConcurrentDataStoreBase(BaseThreadedTestCase):
         if verbose:
             print("%s: thread finished" % name)
 
-    def readerThread(self, d, readerNum):
+    def _readerThread(self, d, readerNum):
         time.sleep(0.01 * readerNum)
         name = currentThread().getName()
 
@@ -215,7 +232,7 @@ class SimpleThreadedBase(BaseThreadedTestCase):
         for t in threads:
             t.join()
 
-    def writerThread(self, d, howMany, writerNum):
+    def _writerThread(self, d, howMany, writerNum):
         name = currentThread().getName()
         start = howMany * writerNum
         stop = howMany * (writerNum + 1) - 1
@@ -226,7 +243,7 @@ class SimpleThreadedBase(BaseThreadedTestCase):
         for x in range(start, stop):
             key = ('%04d' % x).encode("ascii")
             dbutils.DeadlockWrap(d.put, key, self.makeData(key),
-                                 max_retries=12)
+                                 max_retries=20)
 
             if verbose and x % 100 == 0:
                 print("%s: records %d - %d finished" % (name, start, x))
@@ -235,12 +252,12 @@ class SimpleThreadedBase(BaseThreadedTestCase):
             if random() <= 0.05:
                 for y in range(start, x):
                     key = ('%04d' % x).encode("ascii")
-                    data = dbutils.DeadlockWrap(d.get, key, max_retries=12)
+                    data = dbutils.DeadlockWrap(d.get, key, max_retries=20)
                     self.assertEqual(data, self.makeData(key))
 
         # flush them
         try:
-            dbutils.DeadlockWrap(d.sync, max_retries=12)
+            dbutils.DeadlockWrap(d.sync, max_retries=20)
         except db.DBIncompleteError as val:
             if verbose:
                 print("could not complete sync()...")
@@ -248,31 +265,31 @@ class SimpleThreadedBase(BaseThreadedTestCase):
         # read them back, deleting a few
         for x in range(start, stop):
             key = ('%04d' % x).encode("ascii")
-            data = dbutils.DeadlockWrap(d.get, key, max_retries=12)
+            data = dbutils.DeadlockWrap(d.get, key, max_retries=20)
             if verbose and x % 100 == 0:
                 print("%s: fetched record (%s, %s)" % (name, key, data))
             self.assertEqual(data, self.makeData(key))
             if random() <= 0.10:
-                dbutils.DeadlockWrap(d.delete, key, max_retries=12)
+                dbutils.DeadlockWrap(d.delete, key, max_retries=20)
                 if verbose:
                     print("%s: deleted record %s" % (name, key))
 
         if verbose:
             print("%s: thread finished" % name)
 
-    def readerThread(self, d, readerNum):
+    def _readerThread(self, d, readerNum):
         time.sleep(0.01 * readerNum)
         name = currentThread().getName()
 
         for loop in range(5):
             c = d.cursor()
             count = 0
-            rec = dbutils.DeadlockWrap(c.first, max_retries=10)
+            rec = dbutils.DeadlockWrap(c.first, max_retries=20)
             while rec:
                 count += 1
                 key, data = rec
                 self.assertEqual(self.makeData(key), data)
-                rec = dbutils.DeadlockWrap(c.next, max_retries=10)
+                rec = dbutils.DeadlockWrap(c.next, max_retries=20)
             if verbose:
                 print("%s: found %d records" % (name, count))
             c.close()
@@ -360,7 +377,7 @@ class ThreadedTransactionsBase(BaseThreadedTestCase):
                 txn.abort()
                 time.sleep(0.05)
 
-    def writerThread(self, d, howMany, writerNum):
+    def _writerThread(self, d, howMany, writerNum):
         name = currentThread().getName()
         start = howMany * writerNum
         stop = howMany * (writerNum + 1) - 1
@@ -401,7 +418,7 @@ class ThreadedTransactionsBase(BaseThreadedTestCase):
         if verbose:
             print("%s: thread finished" % name)
 
-    def readerThread(self, d, readerNum):
+    def _readerThread(self, d, readerNum):
         time.sleep(0.01 * readerNum + 0.05)
         name = currentThread().getName()