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# Copyright [2015] Hewlett-Packard Development Company, L.P.
#
#    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 fixtures
import mock
import requests
import testtools

AUTH_URL = "http://localhost:5002/auth_url"
AUTH_URL_V1 = "http://localhost:5002/auth_url/v1.0"
AUTH_URL_V2 = "http://localhost:5002/auth_url/v2.0"

URL_QUERY_SEPARATOR = '&'
URL_SEPARATOR = '?'


def order_url(url):
    """Returns the url with the query strings ordered, if they exist and
    there's more than one. Otherwise the url is returned unaltered.
    """
    if URL_QUERY_SEPARATOR in url:
        parts = url.split(URL_SEPARATOR)
        if len(parts) == 2:
            queries = sorted(parts[1].split(URL_QUERY_SEPARATOR))
            url = URL_SEPARATOR.join(
                [parts[0], URL_QUERY_SEPARATOR.join(queries)])
    return url


def _patch_mock_to_raise_for_invalid_assert_calls():
    def raise_for_invalid_assert_calls(wrapped):
        def wrapper(_self, name):
            valid_asserts = [
                'assert_called_with',
                'assert_called_once_with',
                'assert_has_calls',
                'assert_any_calls']

            if name.startswith('assert') and name not in valid_asserts:
                raise AttributeError('%s is not a valid mock assert method'
                                     % name)

            return wrapped(_self, name)
        return wrapper
    mock.Mock.__getattr__ = raise_for_invalid_assert_calls(
        mock.Mock.__getattr__)

# NOTE(gibi): needs to be called only once at import time
# to patch the mock lib
_patch_mock_to_raise_for_invalid_assert_calls()


class TestCase(testtools.TestCase):
    TEST_REQUEST_BASE = {
        'verify': True,
    }

    def setUp(self):
        super(TestCase, self).setUp()
        if (os.environ.get('OS_STDOUT_CAPTURE') == 'True' or
                os.environ.get('OS_STDOUT_CAPTURE') == '1'):
            stdout = self.useFixture(fixtures.StringStream('stdout')).stream
            self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
        if (os.environ.get('OS_STDERR_CAPTURE') == 'True' or
                os.environ.get('OS_STDERR_CAPTURE') == '1'):
            stderr = self.useFixture(fixtures.StringStream('stderr')).stream
            self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))


class TestResponse(requests.Response):
    """Class used to wrap requests.Response and provide some
    convenience to initialize with a dict
    """

    def __init__(self, data):
        super(TestResponse, self).__init__()
        self._text = None
        if isinstance(data, dict):
            self.status_code = data.get('status_code')
            self.headers = data.get('headers')
            # Fake the text attribute to streamline Response creation
            self._text = data.get('text')
        else:
            self.status_code = data