# Pastebin 6vXuL5zh
 
    @ddt.data('1.0', '2.0', '3.0')
    def test_versions(self, version):
        req = self.build_request(
            base_url='http://localhost/v{}'.format(version[0]),
            header_version=version)

        if version is not None:
            req.headers = {VERSION_HEADER_NAME: VOLUME_SERVICE + version}

        response = req.get_response(router.APIRouter())
        self.assertEqual(200, response.status_int)
        body = jsonutils.loads(response.body)
        version_list = body['versions']

        ids = [v['id'] for v in version_list]
        self.assertEqual({'v{}'.format(version)}, set(ids))

        if version == '3.0':
            self.check_response(response, version)
            self.assertEqual(api_version_request._MAX_API_VERSION,
                             version_list[0].get('version'))
            self.assertEqual(api_version_request._MIN_API_VERSION,
                             version_list[0].get('min_version'))
        else:
            self.assertEqual('', version_list[0].get('min_version'))
            self.assertEqual('', version_list[0].get('version'))

    @ddt.data('3.1', 'latest')
    def test_versions_MAX_API_VERSION_and_latest(self, version):
        req = self.build_request(header_version=version,
                                 base_url='http://localhost/v3.1')
        response = req.get_response(router.APIRouter())
        self.assertEqual(200, response.status_int)
        body = jsonutils.loads(response.body)
        version_list = body['versions']
        ids = [v['id'] for v in version_list]

        self.assertEqual({'v3.0'}, set(ids))

        self.check_response(response, '3.1')

        self.assertEqual(api_version_request._MAX_API_VERSION,
                         version_list[0].get('version'))
        self.assertEqual(api_version_request._MIN_API_VERSION,
                         version_list[0].get('min_version'))