/usr/lib/python2.7/dist-packages/ZODB/tests/testfsIndex.py is in python-zodb 1:3.10.5+1.gb28a24c-1.
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#
# Copyright (c) 2001, 2002 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (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.
#
##############################################################################
import doctest
import random
import unittest
from ZODB.fsIndex import fsIndex
from ZODB.utils import p64, z64
from ZODB.tests.util import setUp, tearDown
class Test(unittest.TestCase):
def setUp(self):
self.index = fsIndex()
for i in range(200):
self.index[p64(i * 1000)] = (i * 1000L + 1)
def test__del__(self):
index = self.index
self.assert_(p64(1000) in index)
self.assert_(p64(100*1000) in index)
del self.index[p64(1000)]
del self.index[p64(100*1000)]
self.assert_(p64(1000) not in index)
self.assert_(p64(100*1000) not in index)
for key in list(self.index):
del index[key]
self.assert_(not index)
# Whitebox. Make sure empty buckets are removed
self.assert_(not index._data)
def testInserts(self):
index = self.index
for i in range(0,200):
self.assertEqual((i,index[p64(i*1000)]), (i,(i*1000L+1)))
self.assertEqual(len(index), 200)
key=p64(2000)
self.assertEqual(index.get(key), 2001)
key=p64(2001)
self.assertEqual(index.get(key), None)
self.assertEqual(index.get(key, ''), '')
# self.failUnless(len(index._data) > 1)
def testUpdate(self):
index = self.index
d={}
for i in range(200):
d[p64(i*1000)]=(i*1000L+1)
index.update(d)
for i in range(400,600):
d[p64(i*1000)]=(i*1000L+1)
index.update(d)
for i in range(100, 500):
d[p64(i*1000)]=(i*1000L+2)
index.update(d)
self.assertEqual(index.get(p64(2000)), 2001)
self.assertEqual(index.get(p64(599000)), 599001)
self.assertEqual(index.get(p64(399000)), 399002)
self.assertEqual(len(index), 600)
def testKeys(self):
keys = list(iter(self.index))
keys.sort()
for i, k in enumerate(keys):
self.assertEqual(k, p64(i * 1000))
keys = list(self.index.iterkeys())
keys.sort()
for i, k in enumerate(keys):
self.assertEqual(k, p64(i * 1000))
keys = self.index.keys()
keys.sort()
for i, k in enumerate(keys):
self.assertEqual(k, p64(i * 1000))
def testValues(self):
values = list(self.index.itervalues())
values.sort()
for i, v in enumerate(values):
self.assertEqual(v, (i * 1000L + 1))
values = self.index.values()
values.sort()
for i, v in enumerate(values):
self.assertEqual(v, (i * 1000L + 1))
def testItems(self):
items = list(self.index.iteritems())
items.sort()
for i, item in enumerate(items):
self.assertEqual(item, (p64(i * 1000), (i * 1000L + 1)))
items = self.index.items()
items.sort()
for i, item in enumerate(items):
self.assertEqual(item, (p64(i * 1000), (i * 1000L + 1)))
def testMaxKey(self):
index = self.index
index.clear()
# An empty index should complain.
self.assertRaises(ValueError, index.maxKey)
# Now build up a tree with random values, and check maxKey at each
# step.
correct_max = "" # smaller than anything we'll add
for i in range(1000):
key = p64(random.randrange(100000000))
index[key] = i
correct_max = max(correct_max, key)
index_max = index.maxKey()
self.assertEqual(index_max, correct_max)
index.clear()
a = '\000\000\000\000\000\001\000\000'
b = '\000\000\000\000\000\002\000\000'
c = '\000\000\000\000\000\003\000\000'
d = '\000\000\000\000\000\004\000\000'
index[a] = 1
index[c] = 2
self.assertEqual(index.maxKey(b), a)
self.assertEqual(index.maxKey(d), c)
self.assertRaises(ValueError, index.maxKey, z64)
def testMinKey(self):
index = self.index
index.clear()
# An empty index should complain.
self.assertRaises(ValueError, index.minKey)
# Now build up a tree with random values, and check minKey at each
# step.
correct_min = "\xff" * 8 # bigger than anything we'll add
for i in range(1000):
key = p64(random.randrange(100000000))
index[key] = i
correct_min = min(correct_min, key)
index_min = index.minKey()
self.assertEqual(index_min, correct_min)
index.clear()
a = '\000\000\000\000\000\001\000\000'
b = '\000\000\000\000\000\002\000\000'
c = '\000\000\000\000\000\003\000\000'
d = '\000\000\000\000\000\004\000\000'
index[a] = 1
index[c] = 2
self.assertEqual(index.minKey(b), c)
self.assertRaises(ValueError, index.minKey, d)
def fsIndex_save_and_load():
"""
fsIndex objects now have save methods for saving them to disk in a new
format. The fsIndex class has a load class method that can load data.
Let's start by creating an fsIndex. We'll bother to allocate the
object ids to get multiple buckets:
>>> index = fsIndex(dict((p64(i), i) for i in xrange(0, 1<<28, 1<<15)))
>>> len(index._data)
4096
Now, we'll save the data to disk and then load it:
>>> index.save(42, 'index')
Note that we pass a file position, which gets saved with the index data.
>>> info = fsIndex.load('index')
>>> info['pos']
42
>>> info['index'].__getstate__() == index.__getstate__()
True
If we save the data in the old format, we can still read it:
>>> import cPickle
>>> cPickle.dump(dict(pos=42, index=index), open('old', 'wb'), 1)
>>> info = fsIndex.load('old')
>>> info['pos']
42
>>> info['index'].__getstate__() == index.__getstate__()
True
"""
def test_suite():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(Test))
suite.addTest(doctest.DocTestSuite(setUp=setUp, tearDown=tearDown))
return suite
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