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# 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 os
import shutil
import stat
import uuid
from keystonemiddleware.auth_token import _signing_dir
from keystonemiddleware.tests.unit import utils
class SigningDirectoryTests(utils.BaseTestCase):
def test_directory_created_when_doesnt_exist(self):
# When _SigningDirectory is created, if the directory doesn't exist
# it's created with the expected permissions.
tmp_name = uuid.uuid4().hex
parent_directory = '/tmp/%s' % tmp_name
directory_name = '/tmp/%s/%s' % ((tmp_name,) * 2)
# Directories are created by __init__.
_signing_dir.SigningDirectory(directory_name)
self.addCleanup(shutil.rmtree, parent_directory)
self.assertTrue(os.path.isdir(directory_name))
self.assertTrue(os.access(directory_name, os.W_OK))
self.assertEqual(os.stat(directory_name).st_uid, os.getuid())
self.assertEqual(stat.S_IMODE(os.stat(directory_name).st_mode),
stat.S_IRWXU)
def test_use_directory_already_exists(self):
# The directory can already exist.
tmp_name = uuid.uuid4().hex
parent_directory = '/tmp/%s' % tmp_name
directory_name = '/tmp/%s/%s' % ((tmp_name,) * 2)
os.makedirs(directory_name, stat.S_IRWXU)
self.addCleanup(shutil.rmtree, parent_directory)
_signing_dir.SigningDirectory(directory_name)
def test_write_file(self):
# write_file when the file doesn't exist creates the file.
signing_directory = _signing_dir.SigningDirectory()
self.addCleanup(shutil.rmtree, signing_directory._directory_name)
file_name = self.getUniqueString()
contents = self.getUniqueString()
signing_directory.write_file(file_name, contents)
file_path = signing_directory.calc_path(file_name)
with open(file_path) as f:
actual_contents = f.read()
self.assertEqual(contents, actual_contents)
def test_replace_file(self):
# write_file when the file already exists overwrites it.
signing_directory = _signing_dir.SigningDirectory()
self.addCleanup(shutil.rmtree, signing_directory._directory_name)
file_name = self.getUniqueString()
orig_contents = self.getUniqueString()
signing_directory.write_file(file_name, orig_contents)
new_contents = self.getUniqueString()
signing_directory.write_file(file_name, new_contents)
file_path = signing_directory.calc_path(file_name)
with open(file_path) as f:
actual_contents = f.read()
self.assertEqual(new_contents, actual_contents)
def test_recreate_directory(self):
# If the original directory is lost, it gets recreated when a file
# is written.
signing_directory = _signing_dir.SigningDirectory()
self.addCleanup(shutil.rmtree, signing_directory._directory_name)
# Delete the directory.
shutil.rmtree(signing_directory._directory_name)
file_name = self.getUniqueString()
contents = self.getUniqueString()
signing_directory.write_file(file_name, contents)
actual_contents = signing_directory.read_file(file_name)
self.assertEqual(contents, actual_contents)
def test_read_file(self):
# Can read a file that was written.
signing_directory = _signing_dir.SigningDirectory()
self.addCleanup(shutil.rmtree, signing_directory._directory_name)
file_name = self.getUniqueString()
contents = self.getUniqueString()
signing_directory.write_file(file_name, contents)
actual_contents = signing_directory.read_file(file_name)
self.assertEqual(contents, actual_contents)
def test_read_file_doesnt_exist(self):
# Show what happens when try to read a file that wasn't written.
signing_directory = _signing_dir.SigningDirectory()
self.addCleanup(shutil.rmtree, signing_directory._directory_name)
file_name = self.getUniqueString()
self.assertRaises(IOError, signing_directory.read_file, file_name)
def test_calc_path(self):
# calc_path returns the actual filename built from the directory name.
signing_directory = _signing_dir.SigningDirectory()
self.addCleanup(shutil.rmtree, signing_directory._directory_name)
file_name = self.getUniqueString()
actual_path = signing_directory.calc_path(file_name)
expected_path = os.path.join(signing_directory._directory_name,
file_name)
self.assertEqual(expected_path, actual_path)
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