2 from __future__ import absolute_import, print_function
4 import errno, platform, tempfile
9 def test_bloom(tmpdir):
10 hashes = [os.urandom(20) for i in range(100)]
14 ix.name = b'dummy.idx'
15 ix.shatable = b''.join(hashes)
17 b = bloom.create(tmpdir + b'/pybuptest.bloom', expected=100, k=k)
19 assert b.pfalse_positive() < .1
21 b = bloom.ShaBloom(tmpdir + b'/pybuptest.bloom')
24 all_present &= (b.exists(h) or False)
27 for h in [os.urandom(20) for i in range(1000)]:
30 assert false_positives < 5
31 os.unlink(tmpdir + b'/pybuptest.bloom')
33 tf = tempfile.TemporaryFile(dir=tmpdir)
34 b = bloom.create(b'bup.bloom', f=tf, expected=100)
38 # Test large (~1GiB) filter. This may fail on s390 (31-bit
39 # architecture), and anywhere else where the address space is
40 # sufficiently limited.
41 tf = tempfile.TemporaryFile(dir=tmpdir)
44 b = bloom.create(b'bup.bloom', f=tf, expected=2**28,
47 except EnvironmentError as ex:
48 (ptr_width, linkage) = platform.architecture()
49 if ptr_width == '32bit' and ex.errno == errno.ENOMEM:
50 logging.getLogger().info('skipping large bloom filter test (mmap probably failed) '