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"""Utilities used in ODB testing"""
from git.odb import (
OStream,
)
from git.odb.stream import Sha1Writer
import zlib
from cStringIO import StringIO
#{ Stream Utilities
class DummyStream(object):
def __init__(self):
self.was_read = False
self.bytes = 0
self.closed = False
def read(self, size):
self.was_read = True
self.bytes = size
def close(self):
self.closed = True
def _assert(self):
assert self.was_read
class DeriveTest(OStream):
def __init__(self, sha, type, size, stream, *args, **kwargs):
self.myarg = kwargs.pop('myarg')
self.args = args
def _assert(self):
assert self.args
assert self.myarg
class ZippedStoreShaWriter(Sha1Writer):
"""Remembers everything someone writes to it"""
__slots__ = ('buf', 'zip')
def __init__(self):
Sha1Writer.__init__(self)
self.buf = StringIO()
self.zip = zlib.compressobj(1) # fastest
def __getattr__(self, attr):
return getattr(self.buf, attr)
def write(self, data):
alen = Sha1Writer.write(self, data)
self.buf.write(self.zip.compress(data))
return alen
def close(self):
self.buf.write(self.zip.flush())
#} END stream utilitiess
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