def test_2049_bytes_file(self):
with TempDir() as tmpdir:
tmpfn = os.path.join(tmpdir.name, 'input')
write_binary(2049, tmpfn)
hashs = get_sha1sums(tmpfn, os.path.getsize(tmpfn), 1024)
self.assertEqual(hashs, ('5b00669c480d5cffbdfa8bdba99561160f2d1b77', '170751534f1a95fd80a7a25787ecad2b60368e0a',
{2048L: 'f10ccfde60c17db26e7d85d35665c7661dbbeb2c'}, False))
self.assertEqual(get_partial_sha1(tmpfn, 0, 1024), '5b00669c480d5cffbdfa8bdba99561160f2d1b77')
self.assertEqual(get_partial_sha1(tmpfn, 0, 2048), 'f10ccfde60c17db26e7d85d35665c7661dbbeb2c')
self.assertEqual(get_partial_sha1(tmpfn, 0, 2049), '170751534f1a95fd80a7a25787ecad2b60368e0a')
def small_is_truncated_of_large(large, small):
large_hashs = large.get_part_hashs()
small_hashs = small.get_part_hashs()
size = 2048L
while True:
if size not in large_hashs or size not in small_hashs:
equal_so_far = 1
size /= 2
break
if large_hashs[size] != small_hashs[size]:
equal_so_far = 0
break
size *= 2
if not equal_so_far:
return False
smaller_full_hash = small.fullsha1
larger_hash_till_size_of_small = get_partial_sha1(
large.files[0].path, 0, small.size)
if smaller_full_hash != larger_hash_till_size_of_small:
return False
return True
