Add convertation of query parameters to string

There are some problems with non-ascii chars and special symbols
during using cinderclient.
This patch closes bug connected with parse.urlencode py27 unicode
encode bug by adding convertation of query parameters before
creating query string in manager._build_list_url method.
Also it fix the problems with encoding in quota commands.

Change-Id: I96269cca7ad203eaad02d87b30c16d970b26b25f
Closes-Bug: #1636621
Closes-Bug: #1518141

cinderclient/base.py

@@ -162,7 +162,7 @@ class Manager(common_base.HookableMixin):
 
         if offset:
             query_params['offset'] = offset
-
+        query_params = utils.unicode_key_value_to_string(query_params)
         # Transform the dict to a sequence of two-element tuples in fixed
         # order, then the encoded string will be consistent in Python 2&3.
         query_string = ""

cinderclient/shell_utils.py

@@ -168,8 +168,9 @@ def print_group_type_list(gtypes):
 
 
 def quota_show(quotas):
+    quotas_info_dict = utils.unicode_key_value_to_string(quotas._info)
     quota_dict = {}
-    for resource in quotas._info:
+    for resource in quotas_info_dict.keys():
         good_name = False
         for name in _quota_resources:
             if resource.startswith(name):
@@ -182,7 +183,8 @@ def quota_show(quotas):
 
 def quota_usage_show(quotas):
     quota_list = []
-    for resource in quotas._info.keys():
+    quotas_info_dict = utils.unicode_key_value_to_string(quotas._info)
+    for resource in quotas_info_dict.keys():
         good_name = False
         for name in _quota_resources:
             if resource.startswith(name):

cinderclient/tests/unit/test_base.py

@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 # 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
@@ -11,14 +12,16 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import mock
 from requests import Response
+import six
 
 from cinderclient import api_versions
 from cinderclient.apiclient import base as common_base
 from cinderclient import base
 from cinderclient.v3 import client
 from cinderclient import exceptions
-from cinderclient.v1 import volumes
+from cinderclient.v3 import volumes
 from cinderclient.tests.unit import utils
 from cinderclient.tests.unit import test_utils
 from cinderclient.tests.unit.v1 import fakes
@@ -99,6 +102,20 @@ class BaseTest(utils.TestCase):
         r1 = base.Resource(manager, {'id': 1})
         self.assertEqual(version, r1.api_version)
 
+    @mock.patch('cinderclient.utils.unicode_key_value_to_string',
+                side_effect=lambda x: x)
+    def test_build_list_url_failed(self, fake_encode):
+        # NOTE(mdovgal): This test is reasonable only for py27 version,
+        #                due to issue with parse.urlencode method only in py27
+        if six.PY2:
+            arguments = dict(resource_type = 'volumes',
+                             search_opts = {'all_tenants': 1,
+                                            'name': u'ффф'})
+            manager = base.Manager(None)
+            self.assertRaises(UnicodeEncodeError,
+                              manager._build_list_url,
+                              **arguments)
+
 
 class ListWithMetaTest(utils.TestCase):
     def test_list_with_meta(self):