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# Copyright 2013 OpenStack Foundation
# 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 sys
import six
import testtools
from glanceclient.common import progressbar
from glanceclient.tests import utils as test_utils
class TestProgressBarWrapper(testtools.TestCase):
def test_iter_iterator_display_progress_bar(self):
size = 100
iterator = iter('X' * 100)
saved_stdout = sys.stdout
try:
sys.stdout = output = test_utils.FakeTTYStdout()
# Consume iterator.
data = list(progressbar.VerboseIteratorWrapper(iterator, size))
self.assertEqual(['X'] * 100, data)
self.assertEqual(
'[%s>] 100%%\n' % ('=' * 29),
output.getvalue()
)
finally:
sys.stdout = saved_stdout
def test_iter_file_display_progress_bar(self):
size = 98304
file_obj = six.StringIO('X' * size)
saved_stdout = sys.stdout
try:
sys.stdout = output = test_utils.FakeTTYStdout()
file_obj = progressbar.VerboseFileWrapper(file_obj, size)
chunksize = 1024
chunk = file_obj.read(chunksize)
while chunk:
chunk = file_obj.read(chunksize)
self.assertEqual(
'[%s>] 100%%\n' % ('=' * 29),
output.getvalue()
)
finally:
sys.stdout = saved_stdout
def test_iter_file_no_tty(self):
size = 98304
file_obj = six.StringIO('X' * size)
saved_stdout = sys.stdout
try:
sys.stdout = output = test_utils.FakeNoTTYStdout()
file_obj = progressbar.VerboseFileWrapper(file_obj, size)
chunksize = 1024
chunk = file_obj.read(chunksize)
while chunk:
chunk = file_obj.read(chunksize)
# If stdout is not a tty progress bar should do nothing.
self.assertEqual('', output.getvalue())
finally:
sys.stdout = saved_stdout
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