mirror of https://github.com/python/cpython
303 lines
7.7 KiB
Python
303 lines
7.7 KiB
Python
"""TestCases for exercising a Recno DB.
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"""
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import os
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import shutil
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import sys
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import errno
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import tempfile
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from pprint import pprint
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import unittest
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from bsddb.test.test_all import verbose
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try:
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# For Pythons w/distutils pybsddb
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from bsddb3 import db
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except ImportError:
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# For Python 2.3
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from bsddb import db
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try:
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from bsddb3 import test_support
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except ImportError:
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from test import support as test_support
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letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
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#----------------------------------------------------------------------
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class SimpleRecnoTestCase(unittest.TestCase):
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def setUp(self):
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self.filename = tempfile.mktemp()
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self.homeDir = None
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def tearDown(self):
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test_support.unlink(self.filename)
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if self.homeDir:
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test_support.rmtree(self.homeDir)
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def test01_basic(self):
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d = db.DB()
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get_returns_none = d.set_get_returns_none(2)
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d.set_get_returns_none(get_returns_none)
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d.open(self.filename, db.DB_RECNO, db.DB_CREATE)
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for x in letters:
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recno = d.append(x.encode('ascii') * 60)
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assert type(recno) == type(0)
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assert recno >= 1
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if verbose:
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print(recno, end=' ')
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if verbose: print()
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stat = d.stat()
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if verbose:
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pprint(stat)
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for recno in range(1, len(d)+1):
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data = d[recno]
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if verbose:
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print(data)
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assert type(data) == bytes
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assert data == d.get(recno)
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try:
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data = d[0] # This should raise a KeyError!?!?!
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except db.DBInvalidArgError as val:
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assert val.args[0] == db.EINVAL
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if verbose: print(val)
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else:
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self.fail("expected exception")
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# test that has_key raises DB exceptions (fixed in pybsddb 4.3.2)
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try:
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d.has_key(0)
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except db.DBError as val:
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pass
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else:
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self.fail("has_key did not raise a proper exception")
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try:
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data = d[100]
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except KeyError:
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pass
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else:
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self.fail("expected exception")
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try:
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data = d.get(100)
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except db.DBNotFoundError as val:
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if get_returns_none:
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self.fail("unexpected exception")
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else:
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assert data == None
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keys = d.keys()
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if verbose:
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print(keys)
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assert type(keys) == type([])
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assert type(keys[0]) == type(123)
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assert len(keys) == len(d)
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items = d.items()
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if verbose:
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pprint(items)
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assert type(items) == type([])
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assert type(items[0]) == type(())
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assert len(items[0]) == 2
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assert type(items[0][0]) == type(123)
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assert type(items[0][1]) == bytes
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assert len(items) == len(d)
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assert d.has_key(25)
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del d[25]
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assert not d.has_key(25)
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d.delete(13)
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assert not d.has_key(13)
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data = d.get_both(26, b"z" * 60)
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assert data == b"z" * 60, 'was %r' % data
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if verbose:
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print(data)
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fd = d.fd()
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if verbose:
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print(fd)
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c = d.cursor()
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rec = c.first()
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while rec:
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if verbose:
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print(rec)
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rec = c.next()
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c.set(50)
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rec = c.current()
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if verbose:
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print(rec)
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c.put(-1, b"a replacement record", db.DB_CURRENT)
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c.set(50)
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rec = c.current()
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assert rec == (50, b"a replacement record")
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if verbose:
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print(rec)
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rec = c.set_range(30)
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if verbose:
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print(rec)
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# test that non-existant key lookups work (and that
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# DBC_set_range doesn't have a memleak under valgrind)
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rec = c.set_range(999999)
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assert rec == None
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if verbose:
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print(rec)
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c.close()
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d.close()
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d = db.DB()
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d.open(self.filename)
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c = d.cursor()
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# put a record beyond the consecutive end of the recno's
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d[100] = b"way out there"
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assert d[100] == b"way out there"
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try:
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data = d[99]
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except KeyError:
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pass
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else:
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self.fail("expected exception")
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try:
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d.get(99)
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except db.DBKeyEmptyError as val:
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if get_returns_none:
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self.fail("unexpected DBKeyEmptyError exception")
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else:
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assert val.args[0] == db.DB_KEYEMPTY
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if verbose: print(val)
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else:
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if not get_returns_none:
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self.fail("expected exception")
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rec = c.set(40)
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while rec:
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if verbose:
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print(rec)
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rec = c.next()
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c.close()
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d.close()
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def test02_WithSource(self):
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"""
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A Recno file that is given a "backing source file" is essentially a
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simple ASCII file. Normally each record is delimited by \n and so is
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just a line in the file, but you can set a different record delimiter
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if needed.
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"""
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homeDir = os.path.join(tempfile.gettempdir(), 'db_home%d'%os.getpid())
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self.homeDir = homeDir
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source = os.path.join(homeDir, 'test_recno.txt')
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if not os.path.isdir(homeDir):
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os.mkdir(homeDir)
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f = open(source, 'w') # create the file
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f.close()
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d = db.DB()
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# This is the default value, just checking if both int
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d.set_re_delim(0x0A)
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d.set_re_delim('\n') # and char can be used...
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d.set_re_source(source)
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d.open(self.filename, db.DB_RECNO, db.DB_CREATE)
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data = "The quick brown fox jumped over the lazy dog".split()
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for datum in data:
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d.append(datum.encode('ascii'))
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d.sync()
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d.close()
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# get the text from the backing source
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text = open(source, 'r').read()
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text = text.strip()
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if verbose:
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print(text)
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print(data)
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print(text.split('\n'))
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assert text.split('\n') == data
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# open as a DB again
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d = db.DB()
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d.set_re_source(source)
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d.open(self.filename, db.DB_RECNO)
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d[3] = b'reddish-brown'
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d[8] = b'comatose'
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d.sync()
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d.close()
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text = open(source, 'r').read()
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text = text.strip()
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if verbose:
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print(text)
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print(text.split('\n'))
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assert text.split('\n') == \
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"The quick reddish-brown fox jumped over the comatose dog".split()
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def test03_FixedLength(self):
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d = db.DB()
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d.set_re_len(40) # fixed length records, 40 bytes long
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d.set_re_pad('-') # sets the pad character...
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d.set_re_pad(45) # ...test both int and char
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d.open(self.filename, db.DB_RECNO, db.DB_CREATE)
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for x in letters:
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d.append(x.encode('ascii') * 35) # These will be padded
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d.append(b'.' * 40) # this one will be exact
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try: # this one will fail
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d.append(b'bad' * 20)
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except db.DBInvalidArgError as val:
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assert val.args[0] == db.EINVAL
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if verbose: print(val)
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else:
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self.fail("expected exception")
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c = d.cursor()
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rec = c.first()
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while rec:
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if verbose:
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print(rec)
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rec = c.next()
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c.close()
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d.close()
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#----------------------------------------------------------------------
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def test_suite():
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return unittest.makeSuite(SimpleRecnoTestCase)
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if __name__ == '__main__':
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unittest.main(defaultTest='test_suite')
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