292 lines
9.2 KiB
Python
Executable File
292 lines
9.2 KiB
Python
Executable File
#! /usr/bin/env python
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"""Test script for the bsddb C module by Roger E. Masse
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Adapted to unittest format and expanded scope by Raymond Hettinger
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"""
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import os, sys
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import copy
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import bsddb
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import dbhash # Just so we know it's imported
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import unittest
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from test import test_support
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class TestBSDDB(unittest.TestCase):
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openflag = 'c'
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def setUp(self):
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self.f = self.openmethod[0](self.fname, self.openflag, cachesize=32768)
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self.d = dict(q='Guido', w='van', e='Rossum', r='invented', t='Python', y='')
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for k, v in self.d.items():
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self.f[k] = v
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def tearDown(self):
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self.f.sync()
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self.f.close()
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if self.fname is None:
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return
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try:
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os.remove(self.fname)
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except os.error:
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pass
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def test_getitem(self):
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for k, v in self.d.items():
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self.assertEqual(self.f[k], v)
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def test_len(self):
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self.assertEqual(len(self.f), len(self.d))
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def test_change(self):
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self.f['r'] = 'discovered'
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self.assertEqual(self.f['r'], 'discovered')
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self.assert_('r' in self.f.keys())
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self.assert_('discovered' in self.f.values())
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def test_close_and_reopen(self):
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if self.fname is None:
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# if we're using an in-memory only db, we can't reopen it
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# so finish here.
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return
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self.f.close()
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self.f = self.openmethod[0](self.fname, 'w')
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for k, v in self.d.items():
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self.assertEqual(self.f[k], v)
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def assertSetEquals(self, seqn1, seqn2):
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self.assertEqual(set(seqn1), set(seqn2))
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def test_mapping_iteration_methods(self):
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f = self.f
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d = self.d
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self.assertSetEquals(d, f)
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self.assertSetEquals(d.keys(), f.keys())
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self.assertSetEquals(d.values(), f.values())
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self.assertSetEquals(d.items(), f.items())
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self.assertSetEquals(d.keys(), f.keys())
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self.assertSetEquals(d.values(), f.values())
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self.assertSetEquals(d.items(), f.items())
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def test_iter_while_modifying_values(self):
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if not hasattr(self.f, '__iter__'):
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return
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di = iter(self.d)
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while 1:
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try:
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key = next(di)
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self.d[key] = 'modified '+key
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except StopIteration:
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break
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# it should behave the same as a dict. modifying values
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# of existing keys should not break iteration. (adding
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# or removing keys should)
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fi = iter(self.f)
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while 1:
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try:
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key = next(fi)
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self.f[key] = 'modified '+key
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except StopIteration:
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break
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self.test_mapping_iteration_methods()
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def test_iteritems_while_modifying_values(self):
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if not hasattr(self.f, 'iteritems'):
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return
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di = iter(self.d.items())
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while 1:
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try:
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k, v = next(di)
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self.d[k] = 'modified '+v
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except StopIteration:
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break
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# it should behave the same as a dict. modifying values
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# of existing keys should not break iteration. (adding
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# or removing keys should)
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fi = iter(self.f.items())
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while 1:
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try:
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k, v = next(fi)
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self.f[k] = 'modified '+v
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except StopIteration:
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break
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self.test_mapping_iteration_methods()
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def test_first_next_looping(self):
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items = [self.f.first()]
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for i in range(1, len(self.f)):
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items.append(self.f.next())
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self.assertSetEquals(items, self.d.items())
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def test_previous_last_looping(self):
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items = [self.f.last()]
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for i in range(1, len(self.f)):
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items.append(self.f.previous())
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self.assertSetEquals(items, self.d.items())
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def test_set_location(self):
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self.assertEqual(self.f.set_location('e'), ('e', self.d['e']))
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def test_contains(self):
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for k in self.d:
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self.assert_(k in self.f)
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self.assert_('not here' not in self.f)
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def test_clear(self):
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self.f.clear()
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self.assertEqual(len(self.f), 0)
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def test__no_deadlock_first(self, debug=0):
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# do this so that testers can see what function we're in in
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# verbose mode when we deadlock.
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sys.stdout.flush()
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# in pybsddb's _DBWithCursor this causes an internal DBCursor
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# object is created. Other test_ methods in this class could
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# inadvertently cause the deadlock but an explicit test is needed.
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if debug: print("A")
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k,v = self.f.first()
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if debug: print("B", k)
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self.f[k] = "deadlock. do not pass go. do not collect $200."
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if debug: print("C")
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# if the bsddb implementation leaves the DBCursor open during
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# the database write and locking+threading support is enabled
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# the cursor's read lock will deadlock the write lock request..
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# test the iterator interface (if present)
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if hasattr(self.f, 'iteritems'):
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if debug: print("D")
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i = iter(self.f.items())
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k,v = next(i)
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if debug: print("E")
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self.f[k] = "please don't deadlock"
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if debug: print("F")
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while 1:
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try:
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k,v = next(i)
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except StopIteration:
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break
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if debug: print("F2")
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i = iter(self.f)
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if debug: print("G")
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while i:
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try:
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if debug: print("H")
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k = next(i)
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if debug: print("I")
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self.f[k] = "deadlocks-r-us"
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if debug: print("J")
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except StopIteration:
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i = None
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if debug: print("K")
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# test the legacy cursor interface mixed with writes
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self.assert_(self.f.first()[0] in self.d)
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k = self.f.next()[0]
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self.assert_(k in self.d)
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self.f[k] = "be gone with ye deadlocks"
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self.assert_(self.f[k], "be gone with ye deadlocks")
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def test_for_cursor_memleak(self):
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if not hasattr(self.f, 'iteritems'):
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return
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# do the bsddb._DBWithCursor _iter_mixin internals leak cursors?
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nc1 = len(self.f._cursor_refs)
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# create iterator
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i = iter(self.f.iteritems())
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nc2 = len(self.f._cursor_refs)
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# use the iterator (should run to the first yield, creating the cursor)
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k, v = next(i)
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nc3 = len(self.f._cursor_refs)
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# destroy the iterator; this should cause the weakref callback
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# to remove the cursor object from self.f._cursor_refs
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del i
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nc4 = len(self.f._cursor_refs)
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self.assertEqual(nc1, nc2)
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self.assertEqual(nc1, nc4)
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self.assertEqual(nc3, nc1+1)
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def test_popitem(self):
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k, v = self.f.popitem()
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self.assert_(k in self.d)
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self.assert_(v in self.d.values())
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self.assert_(k not in self.f)
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self.assertEqual(len(self.d)-1, len(self.f))
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def test_pop(self):
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k = 'w'
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v = self.f.pop(k)
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self.assertEqual(v, self.d[k])
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self.assert_(k not in self.f)
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self.assert_(v not in self.f.values())
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self.assertEqual(len(self.d)-1, len(self.f))
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def test_get(self):
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self.assertEqual(self.f.get('NotHere'), None)
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self.assertEqual(self.f.get('NotHere', 'Default'), 'Default')
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self.assertEqual(self.f.get('q', 'Default'), self.d['q'])
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def test_setdefault(self):
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self.assertEqual(self.f.setdefault('new', 'dog'), 'dog')
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self.assertEqual(self.f.setdefault('r', 'cat'), self.d['r'])
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def test_update(self):
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new = dict(y='life', u='of', i='brian')
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self.f.update(new)
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self.d.update(new)
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for k, v in self.d.items():
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self.assertEqual(self.f[k], v)
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def test_keyordering(self):
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if self.openmethod[0] is not bsddb.btopen:
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return
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keys = sorted(self.d.keys())
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self.assertEqual(self.f.first()[0], keys[0])
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self.assertEqual(self.f.next()[0], keys[1])
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self.assertEqual(self.f.last()[0], keys[-1])
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self.assertEqual(self.f.previous()[0], keys[-2])
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self.assertEqual(list(self.f), keys)
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class TestBTree(TestBSDDB):
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fname = test_support.TESTFN
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openmethod = [bsddb.btopen]
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class TestBTree_InMemory(TestBSDDB):
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fname = None
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openmethod = [bsddb.btopen]
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class TestBTree_InMemory_Truncate(TestBSDDB):
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fname = None
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openflag = 'n'
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openmethod = [bsddb.btopen]
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class TestHashTable(TestBSDDB):
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fname = test_support.TESTFN
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openmethod = [bsddb.hashopen]
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class TestHashTable_InMemory(TestBSDDB):
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fname = None
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openmethod = [bsddb.hashopen]
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## # (bsddb.rnopen,'Record Numbers'), 'put' for RECNO for bsddb 1.85
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## # appears broken... at least on
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## # Solaris Intel - rmasse 1/97
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def test_main(verbose=None):
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test_support.run_unittest(
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TestBTree,
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TestHashTable,
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TestBTree_InMemory,
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TestHashTable_InMemory,
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TestBTree_InMemory_Truncate,
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)
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if __name__ == "__main__":
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test_main(verbose=True)
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