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# This module is part of GitDB and is released under

# the New BSD License: https://opensource.org/license/bsd-3-clause/

"""Test for object db"""

from gitdb.test.lib import (

TestBase,

DummyStream,

DeriveTest,

)

from gitdb import (

OInfo,

OPackInfo,

ODeltaPackInfo,

OStream,

OPackStream,

ODeltaPackStream,

IStream

)

from gitdb.util import (

NULL_BIN_SHA

)

from gitdb.typ import (

str_blob_type

)

class TestBaseTypes(TestBase):

def test_streams(self):

# test info

sha = NULL_BIN_SHA

s = 20

blob_id = 3

info = OInfo(sha, str_blob_type, s)

assert info.binsha == sha

assert info.type == str_blob_type

assert info.type_id == blob_id

assert info.size == s

# test pack info

# provides type_id

pinfo = OPackInfo(0, blob_id, s)

assert pinfo.type == str_blob_type

assert pinfo.type_id == blob_id

assert pinfo.pack_offset == 0

dpinfo = ODeltaPackInfo(0, blob_id, s, sha)

assert dpinfo.type == str_blob_type

assert dpinfo.type_id == blob_id

assert dpinfo.delta_info == sha

assert dpinfo.pack_offset == 0

# test ostream

stream = DummyStream()

ostream = OStream(*(info + (stream, )))

assert ostream.stream is stream

ostream.read(15)

stream._assert()

assert stream.bytes == 15

ostream.read(20)

assert stream.bytes == 20

# test packstream

postream = OPackStream(*(pinfo + (stream, )))

assert postream.stream is stream

postream.read(10)

stream._assert()

assert stream.bytes == 10

# test deltapackstream

dpostream = ODeltaPackStream(*(dpinfo + (stream, )))

assert dpostream.stream is stream

dpostream.read(5)

stream._assert()

assert stream.bytes == 5

# derive with own args

DeriveTest(sha, str_blob_type, s, stream, 'mine', myarg=3)._assert()

# test istream

istream = IStream(str_blob_type, s, stream)

assert istream.binsha == None

istream.binsha = sha

assert istream.binsha == sha

assert len(istream.binsha) == 20

assert len(istream.hexsha) == 40

assert istream.size == s

istream.size = s * 2

assert istream.size == s * 2

assert istream.type == str_blob_type

istream.type = "something"

assert istream.type == "something"

assert istream.stream is stream

istream.stream = None

assert istream.stream is None

assert istream.error is None

istream.error = Exception()

assert isinstance(istream.error, Exception)

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