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# Authors: Radostin Stoyanov <rstoyanov1@gmail.com>
#
# Copyright (C) 2017 Radostin Stoyanov
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
Unit tests for methods defined in virtBootstrap.sources.FileSource
"""
from tests import unittest
from tests import mock
from tests import sources
# pylint: disable=invalid-name
class TestFileSource(unittest.TestCase):
"""
Test cases for FileSource
"""
###################################
# Tests for: __init__()
###################################
def test_argument_assignment(self):
"""
Ensures that __init__() assigns the arguments' values to instance
variables.
"""
kwargs = {'uri': mock.Mock(),
'fmt': 'dir',
'progress': mock.Mock()}
src_instance = sources.FileSource(**kwargs)
test_values = {
src_instance.path: kwargs['uri'].path,
src_instance.output_format: kwargs['fmt'],
src_instance.progress: kwargs['progress'].update_progress
}
for value in test_values:
self.assertIs(value, test_values[value])
###################################
# Tests for: unpack()
###################################
def test_unpack_invalid_source_raise_exception(self):
"""
Ensures that unpack() throws an Exception when called with
invalid file source.
"""
m_self = mock.Mock(spec=sources.FileSource)
m_self.path = 'foo'
with mock.patch('os.path.isfile') as m_isfile:
m_isfile.return_value = False
with self.assertRaises(Exception) as err:
sources.FileSource.unpack(m_self, 'bar')
self.assertIn('Invalid file source', str(err.exception))
def test_unpack_to_dir(self):
"""
Ensures that unpack() calls safe_untar() when the output format
is set to 'dir'.
"""
m_self = mock.Mock(spec=sources.FileSource)
m_self.progress = mock.Mock()
m_self.path = 'foo'
m_self.output_format = 'dir'
dest = 'bar'
with mock.patch('os.path.isfile') as m_isfile:
m_isfile.return_value = True
with mock.patch('virtBootstrap.utils.safe_untar') as m_untar:
sources.FileSource.unpack(m_self, dest)
m_untar.assert_called_once_with(m_self.path, dest)
def test_unpack_to_qcow2(self):
"""
Ensures that unpack() calls create_qcow2() when the output
format is set to 'qcow2'.
"""
m_self = mock.Mock(spec=sources.FileSource)
m_self.progress = mock.Mock()
m_self.path = 'foo'
m_self.output_format = 'qcow2'
dest = 'bar'
qcow2_file_path = 'foobar'
with mock.patch.multiple('os.path',
isfile=mock.DEFAULT,
realpath=mock.DEFAULT) as mocked:
mocked['isfile'].return_value = True
mocked['realpath'].return_value = qcow2_file_path
with mock.patch('virtBootstrap.utils.create_qcow2') as m_qcow2:
sources.FileSource.unpack(m_self, dest)
m_qcow2.assert_called_once_with(m_self.path, qcow2_file_path)
def _unpack_raise_error_test(self,
output_format,
side_effect=None,
patch_method=None,
msg=None):
"""
This method is gather common test pattern used in the following
three test cases.
"""
m_self = mock.Mock(spec=sources.FileSource)
m_self.progress = mock.Mock()
m_self.path = 'foo'
m_self.output_format = output_format
dest = 'bar'
with mock.patch.multiple('os.path',
isfile=mock.DEFAULT,
realpath=mock.DEFAULT) as m_path:
m_path['isfile'].return_value = True
with self.assertRaises(Exception) as err:
if patch_method:
with mock.patch(patch_method) as mocked_method:
mocked_method.side_effect = side_effect
sources.FileSource.unpack(m_self, dest)
else:
sources.FileSource.unpack(m_self, dest)
if msg:
self.assertEqual(msg, str(err.exception))
def test_unpack_invalid_format_raise_exception(self):
"""
Ensures that unpack() throws an Exception when called with
invalid output format.
"""
self._unpack_raise_error_test('foo', msg='Unknown format:foo')
def test_unpack_raise_error_if_untar_fail(self):
"""
Ensures that unpack() throws an Exception when safe_untar()
fails.
"""
msg = 'Caught untar failure'
patch_method = 'virtBootstrap.utils.safe_untar'
self._unpack_raise_error_test(output_format='dir',
side_effect=Exception(msg),
patch_method=patch_method,
msg=msg)
def test_unpack_raise_error_if_extract_in_qcow2_fail(self):
"""
Ensures that unpack() throws an Exception when create_qcow2()
fails.
"""
msg = 'Caught extract_layers_in_qcow2 failure'
patch_method = 'virtBootstrap.utils.create_qcow2'
self._unpack_raise_error_test(output_format='qcow2',
side_effect=Exception(msg),
patch_method=patch_method,
msg=msg)
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