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# Copyright 2012 OpenStack Foundation
#
# 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.

from oslo_config import cfg
import webob

from keystone import middleware
from keystone.tests import unit as tests


CONF = cfg.CONF


def make_request(**kwargs):
    accept = kwargs.pop('accept', None)
    method = kwargs.pop('method', 'GET')
    body = kwargs.pop('body', None)
    req = webob.Request.blank('/', **kwargs)
    req.method = method
    if body is not None:
        req.body = body
    if accept is not None:
        req.accept = accept
    return req


def make_response(**kwargs):
    body = kwargs.pop('body', None)
    return webob.Response(body)


class TokenAuthMiddlewareTest(tests.TestCase):
    def test_request(self):
        req = make_request()
        req.headers[middleware.AUTH_TOKEN_HEADER] = 'MAGIC'
        middleware.TokenAuthMiddleware(None).process_request(req)
        context = req.environ[middleware.CONTEXT_ENV]
        self.assertEqual('MAGIC', context['token_id'])


class AdminTokenAuthMiddlewareTest(tests.TestCase):
    def test_request_admin(self):
        req = make_request()
        req.headers[middleware.AUTH_TOKEN_HEADER] = CONF.admin_token
        middleware.AdminTokenAuthMiddleware(None).process_request(req)
        context = req.environ[middleware.CONTEXT_ENV]
        self.assertTrue(context['is_admin'])

    def test_request_non_admin(self):
        req = make_request()
        req.headers[middleware.AUTH_TOKEN_HEADER] = 'NOT-ADMIN'
        middleware.AdminTokenAuthMiddleware(None).process_request(req)
        context = req.environ[middleware.CONTEXT_ENV]
        self.assertFalse(context['is_admin'])


class PostParamsMiddlewareTest(tests.TestCase):
    def test_request_with_params(self):
        req = make_request(body="arg1=one", method='POST')
        middleware.PostParamsMiddleware(None).process_request(req)
        params = req.environ[middleware.PARAMS_ENV]
        self.assertEqual({"arg1": "one"}, params)


class JsonBodyMiddlewareTest(tests.TestCase):
    def test_request_with_params(self):
        req = make_request(body='{"arg1": "one", "arg2": ["a"]}',
                           content_type='application/json',
                           method='POST')
        middleware.JsonBodyMiddleware(None).process_request(req)
        params = req.environ[middleware.PARAMS_ENV]
        self.assertEqual({"arg1": "one", "arg2": ["a"]}, params)

    def test_malformed_json(self):
        req = make_request(body='{"arg1": "on',
                           content_type='application/json',
                           method='POST')
        resp = middleware.JsonBodyMiddleware(None).process_request(req)
        self.assertEqual(400, resp.status_int)

    def test_not_dict_body(self):
        req = make_request(body='42',
                           content_type='application/json',
                           method='POST')
        resp = middleware.JsonBodyMiddleware(None).process_request(req)
        self.assertEqual(400, resp.status_int)
        self.assertTrue('valid JSON object' in resp.json['error']['message'])

    def test_no_content_type(self):
        req = make_request(body='{"arg1": "one", "arg2": ["a"]}',
                           method='POST')
        middleware.JsonBodyMiddleware(None).process_request(req)
        params = req.environ[middleware.PARAMS_ENV]
        self.assertEqual({"arg1": "one", "arg2": ["a"]}, params)

    def test_unrecognized_content_type(self):
        req = make_request(body='{"arg1": "one", "arg2": ["a"]}',
                           content_type='text/plain',
                           method='POST')
        resp = middleware.JsonBodyMiddleware(None).process_request(req)
        self.assertEqual(400, resp.status_int)

    def test_unrecognized_content_type_without_body(self):
        req = make_request(content_type='text/plain',
                           method='GET')
        middleware.JsonBodyMiddleware(None).process_request(req)
        params = req.environ.get(middleware.PARAMS_ENV, {})
        self.assertEqual({}, params)