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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2011 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 __builtin__
import errno
import os
import shutil
import tempfile
import mock
import mox
from openstack.common import fileutils
from tests import utils
class EnsureTree(utils.BaseTestCase):
def test_ensure_tree(self):
tmpdir = tempfile.mkdtemp()
try:
testdir = '%s/foo/bar/baz' % (tmpdir,)
fileutils.ensure_tree(testdir)
self.assertTrue(os.path.isdir(testdir))
finally:
if os.path.exists(tmpdir):
shutil.rmtree(tmpdir)
class TestCachedFile(utils.BaseTestCase):
def setUp(self):
super(TestCachedFile, self).setUp()
self.mox = mox.Mox()
self.addCleanup(self.mox.UnsetStubs)
def test_read_cached_file(self):
self.mox.StubOutWithMock(os.path, "getmtime")
os.path.getmtime(mox.IgnoreArg()).AndReturn(1)
self.mox.ReplayAll()
fileutils._FILE_CACHE = {
'/this/is/a/fake': {"data": 1123, "mtime": 1}
}
fresh, data = fileutils.read_cached_file("/this/is/a/fake")
fdata = fileutils._FILE_CACHE['/this/is/a/fake']["data"]
self.assertEqual(fdata, data)
def test_read_modified_cached_file(self):
self.mox.StubOutWithMock(os.path, "getmtime")
self.mox.StubOutWithMock(__builtin__, 'open')
os.path.getmtime(mox.IgnoreArg()).AndReturn(2)
fake_contents = "lorem ipsum"
fake_file = self.mox.CreateMockAnything()
fake_file.read().AndReturn(fake_contents)
fake_context_manager = self.mox.CreateMockAnything()
fake_context_manager.__enter__().AndReturn(fake_file)
fake_context_manager.__exit__(mox.IgnoreArg(),
mox.IgnoreArg(),
mox.IgnoreArg())
__builtin__.open(mox.IgnoreArg()).AndReturn(fake_context_manager)
self.mox.ReplayAll()
fileutils._FILE_CACHE = {
'/this/is/a/fake': {"data": 1123, "mtime": 1}
}
fresh, data = fileutils.read_cached_file("/this/is/a/fake")
self.assertEqual(data, fake_contents)
self.assertTrue(fresh)
class DeleteIfExists(utils.BaseTestCase):
def test_file_present(self):
tmpfile = tempfile.mktemp()
open(tmpfile, 'w')
fileutils.delete_if_exists(tmpfile)
self.assertFalse(os.path.exists(tmpfile))
def test_file_absent(self):
tmpfile = tempfile.mktemp()
fileutils.delete_if_exists(tmpfile)
self.assertFalse(os.path.exists(tmpfile))
@mock.patch('os.unlink')
def test_file_error(self, osunlink):
tmpfile = tempfile.mktemp()
open(tmpfile, 'w')
error = OSError()
error.errno = errno.EINVAL
osunlink.side_effect = error
self.assertRaises(OSError, fileutils.delete_if_exists, tmpfile)
class RemovePathOnError(utils.BaseTestCase):
def test_error(self):
tmpfile = tempfile.mktemp()
open(tmpfile, 'w')
try:
with fileutils.remove_path_on_error(tmpfile):
raise Exception
except Exception:
self.assertFalse(os.path.exists(tmpfile))
def test_no_error(self):
tmpfile = tempfile.mktemp()
open(tmpfile, 'w')
with fileutils.remove_path_on_error(tmpfile):
pass
self.assertTrue(os.path.exists(tmpfile))
os.unlink(tmpfile)
class UtilsTestCase(utils.BaseTestCase):
def test_file_open(self):
dst_fd, dst_path = tempfile.mkstemp()
try:
os.close(dst_fd)
with open(dst_path, 'w') as f:
f.write('hello')
with fileutils.file_open(dst_path, 'r') as fp:
self.assertEquals(fp.read(), 'hello')
finally:
os.unlink(dst_path)
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