Fix wrong error message for environment operation

Change-Id: Iafdfef92bd168426be899472f3a722b7b5fcd6cf
Closes-Bug: #1620618

.gitignore

@@ -29,6 +29,7 @@ pip-log.txt
 nosetests.xml
 functional_creds.conf
 AUTHORS
+ChangeLog
 
 # Translations
 *.mo

mistralclient/api/base.py

@@ -74,8 +74,11 @@ class ResourceManager(object):
     def _ensure_not_empty(self, **kwargs):
         for name, value in kwargs.items():
             if value is None or (isinstance(value, str) and len(value) == 0):
-                raise APIException('%s is missing field "%s"' %
-                                   (self.resource_class.__name__, name))
+                raise APIException(
+                    400,
+                    '%s is missing field "%s"' %
+                    (self.resource_class.__name__, name)
+                )
 
     def _copy_if_defined(self, data, **kwargs):
         for name, value in kwargs.items():

mistralclient/tests/unit/v2/test_environments.py

@@ -19,6 +19,7 @@ import pkg_resources as pkg
 from six.moves.urllib import parse
 from six.moves.urllib import request
 
+from mistralclient.api import base as api_base
 from mistralclient.api.v2 import environments
 from mistralclient.tests.unit.v2 import base
 from mistralclient import utils
@@ -78,6 +79,15 @@ class TestEnvironmentsV2(base.BaseClientV2Test):
 
         mock.assert_called_once_with(URL_TEMPLATE, json.dumps(expected_data))
 
+    def test_create_without_name(self):
+        data = copy.deepcopy(ENVIRONMENT)
+        data.pop('name')
+
+        with self.assertRaises(api_base.APIException) as cm:
+            self.environments.create(**data)
+
+        self.assertEqual(400, cm.exception.error_code)
+
     def test_update(self):
         data = copy.deepcopy(ENVIRONMENT)
 
@@ -114,6 +124,15 @@ class TestEnvironmentsV2(base.BaseClientV2Test):
 
         mock.assert_called_once_with(URL_TEMPLATE, json.dumps(expected_data))
 
+    def test_update_without_name(self):
+        data = copy.deepcopy(ENVIRONMENT)
+        data.pop('name')
+
+        with self.assertRaises(api_base.APIException) as cm:
+            self.environments.update(**data)
+
+        self.assertEqual(400, cm.exception.error_code)
+
     def test_list(self):
         mock = self.mock_http_get(content={'environments': [ENVIRONMENT]})