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# Copyright 2018 RedHat Inc.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import tempfile
from oslotest import base
from glance_store.common import utils
class TestUtils(base.BaseTestCase):
def test_cooperative_reader_returns_bytes(self):
with tempfile.TemporaryFile() as fd:
reader = utils.CooperativeReader(fd)
# Make sure CooperativeReader does not use cooperative_read instead
# of its own read method.
reader.read = utils.CooperativeReader.read
out = reader.read(reader)
self.assertEqual(out, b'')
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