Remove non-exception from EXCEPTION_DETAIL_MAPPINGS

Removes a non-exception from the map and adds tests to check the
consistency of message_field.Action and .Detail fields.

Updates test-requirements and lower-constraints to use the most
recent version of ddt allowed by current upper-constraints.  (An
included test uses the idata decorator, which allows passing an
iterator to the test data.)

Closes-bug: #1822025
Change-Id: I0cad6589b145fac430942ccbb27279db7b3b152f

cinder/message/message_field.py

@@ -108,7 +108,6 @@ class Detail(object):
                        'BackupLimitExceeded',
                        'SnapshotLimitExceeded'],
         NOT_ENOUGH_SPACE_FOR_IMAGE: ['ImageTooBig'],
-        UNMANAGE_ENC_NOT_SUPPORTED: ['UnmanageEncVolNotSupported'],
     }
 
 

cinder/tests/unit/message/test_message_field.py

@@ -11,6 +11,8 @@
 #    under the License.
 
 import ddt
+import inspect
+from itertools import chain
 
 from oslo_config import cfg
 
@@ -23,6 +25,30 @@
 
 @ddt.ddt
 class MessageFieldTest(test.TestCase):
+    def test_unique_action_ids(self):
+        """Assert that no action_id is duplicated."""
+        action_ids = [x[0] for x in message_field.Action.ALL]
+        self.assertEqual(len(action_ids), len(set(action_ids)))
+
+    def test_unique_detail_ids(self):
+        """Assert that no detail_id is duplicated."""
+        detail_ids = [x[0] for x in message_field.Detail.ALL]
+        self.assertEqual(len(detail_ids), len(set(detail_ids)))
+
+    known_exceptions = [
+        name for name, _ in
+        inspect.getmembers(exception, inspect.isclass)]
+    mapped_exceptions = list(chain.from_iterable(
+        message_field.Detail.EXCEPTION_DETAIL_MAPPINGS.values()))
+
+    @ddt.idata(mapped_exceptions)
+    def test_exception_detail_map_no_unknown_exceptions(self, exc):
+        """Assert that only known exceptions are in the map."""
+        self.assertIn(exc, self.known_exceptions)
+
+
+@ddt.ddt
+class MessageFieldFunctionsTest(test.TestCase):
 
     @ddt.data({'id': '001', 'content': 'schedule allocate volume'},
               {'id': '002', 'content': 'attach volume'},

lower-constraints.txt

@@ -17,7 +17,7 @@ contextlib2==0.5.5
 coverage==4.0
 cryptography==2.1
 cursive==0.2.1
-ddt==1.0.1
+ddt==1.2.1
 debtcollector==1.19.0
 decorator==3.4.0
 defusedxml==0.5.0

test-requirements.txt

@@ -6,7 +6,7 @@
 hacking!=0.13.0,<0.14,>=0.12.0 # Apache-2.0
 
 coverage!=4.4,>=4.0 # Apache-2.0
-ddt>=1.0.1 # MIT
+ddt>=1.2.1 # MIT
 fixtures>=3.0.0 # Apache-2.0/BSD
 mock>=2.0.0 # BSD
 os-api-ref>=1.4.0 # Apache-2.0