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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 mock
from six import StringIO
import testtools
from glareclient.common import progressbar
MOD = 'glareclient.common.progressbar'
class TestProgressBar(testtools.TestCase):
@mock.patch(MOD + '.os')
def test_totalsize_fileno(self, mock_os):
mock_os.fstat.return_value.st_size = 43
fake_file = mock.Mock()
del fake_file.len
fake_file.fileno.return_value = 42
pb = progressbar.VerboseFileWrapper(fake_file)
self.assertEqual(43, pb._totalsize)
mock_os.fstat.assert_called_once_with(42)
@mock.patch(MOD + '.sys')
def test__display_progress_bar(self, mock_sys):
fake_file = StringIO('test') # 4 bytes
fake_file.len = 4
pb = progressbar.VerboseFileWrapper(fake_file)
pb._display_progress_bar(2) # 2 of 4 bytes = 50%
pb._display_progress_bar(1) # 3 of 4 bytes = 75%
pb._display_progress_bar(1) # 4 of 4 bytes = 100%
expected = [
mock.call('\r[===============> ] 50%'),
mock.call('\r[======================> ] 75%'),
mock.call('\r[=============================>] 100%'),
]
self.assertEqual(expected, mock_sys.stdout.write.mock_calls)
@mock.patch(MOD + '.sys')
def test__display_progress_bar_unknown_len(self, mock_sys):
fake_file = StringIO('')
fake_file.len = 0
pb = progressbar.VerboseFileWrapper(fake_file)
for i in range(6):
pb._display_progress_bar(1)
expected = [
mock.call('\r[-] 1 bytes'),
mock.call('\r[\\] 2 bytes'),
mock.call('\r[|] 3 bytes'),
mock.call('\r[/] 4 bytes'),
mock.call('\r[-] 5 bytes'),
mock.call('\r[\\] 6 bytes'),
]
self.assertEqual(expected, mock_sys.stdout.write.mock_calls)
@mock.patch(MOD + '._ProgressBarBase.__init__')
@mock.patch(MOD + '._ProgressBarBase._display_progress_bar')
def test_read(self, mock_display_progress_bar, mock_init):
mock_init.return_value = None
pb = progressbar.VerboseFileWrapper()
pb._wrapped = mock.Mock(len=42)
pb._wrapped.read.return_value = 'ok'
pb.read(2)
mock_display_progress_bar.assert_called_once_with(2)
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