New test for repozo.py. It doesn't run automatically,

but nothing in scripts/tests/ does.  It failed before the
earlier (today) fixes to repozo.py, and passes now.
Better Than Nothing -- which is what we had before.

src/scripts/tests/testrepozo.py

+#!/usr/bin/env python
+##############################################################################
+#
+# Copyright (c) 2004 Zope Corporation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.0 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+
+"""Test repozo.py.
+
+This is a by-hand test.  It succeeds iff it doesn't blow up.  Run it with
+its home directory as the current directory.  It will destroy all files
+matching Data.* and Copy.* in this directory, and anything in a
+subdirectory of name 'backup'.
+"""
+
+import os
+import random
+import time
+import glob
+import sys
+
+import ZODB
+from ZODB import FileStorage
+
+PYTHON = sys.executable + ' '
+
+def cleanup():
+    for fname in glob.glob('Data.*') + glob.glob('Copy.*'):
+        os.remove(fname)
+
+    if os.path.isdir('backup'):
+        for fname in os.listdir('backup'):
+            os.remove(os.path.join('backup', fname))
+        os.rmdir('backup')
+
+class OurDB:
+    def __init__(self):
+        from BTrees.OOBTree import OOBTree
+        self.getdb()
+        conn = self.db.open()
+        conn.root()['tree'] = OOBTree()
+        get_transaction().commit()
+        self.close()
+
+    def getdb(self):
+        storage = FileStorage.FileStorage('Data.fs')
+        self.db = ZODB.DB(storage)
+
+    def gettree(self):
+        self.getdb()
+        conn = self.db.open()
+        return conn.root()['tree']
+
+    def pack(self):
+        self.getdb()
+        self.db.pack()
+
+    def close(self):
+        if self.db is not None:
+            self.db.close()
+            self.db = None
+
+# Do recovery to current time, and check that it's identical to Data.fs.
+def check():
+    os.system(PYTHON + '../repozo.py -vRr backup -o Copy.fs')
+    f = file('Data.fs', 'rb')
+    g = file('Copy.fs', 'rb')
+    fguts = f.read()
+    gguts = g.read()
+    f.close()
+    g.close()
+    if fguts != gguts:
+        raise ValueError("guts don't match")
+
+def main():
+    cleanup()
+    os.mkdir('backup')
+    d = OurDB()
+    for dummy in range(100):
+        # Make some mutations.
+        tree = d.gettree()
+        for dummy2 in range(100):
+            if random.random() < 0.6:
+                tree[random.randrange(100000)] = random.randrange(100000)
+            else:
+                keys = tree.keys()
+                if keys:
+                    del tree[keys[0]]
+        get_transaction().commit()
+        d.close()
+
+        # Pack about each tenth time.
+        if random.random() < 0.1:
+            print "packing"
+            d.pack()
+            d.close()
+
+        # Make an incremental backup, half the time with gzip (-z).
+        if random.random() < 0.5:
+            os.system(PYTHON + '../repozo.py -vBQr backup -f Data.fs')
+        else:
+            os.system(PYTHON + '../repozo.py -zvBQr backup -f Data.fs')
+
+        # Make sure the clock moves at least a second.
+        time.sleep(1.01)
+
+        # Verify current Data.fs can be reproduced exactly.
+        check()
+
+    # Tear it all down.
+    cleanup()
+    print 'Test passed!'
+
+if __name__ == '__main__':
+    main()