Return proper error code for CLI failure

Due to [1] , the return code which was expected from
NeutronClient changed if a particular CLI failed to
find an object belonging to the resource to be deleted.
The following patch fixes it.
[1]: https://review.openstack.org/#/c/263609/

Change-Id: I19b4328361157fbca3e557e02797ed0c895e924b
Closes-Bug:#1623169

neutronclient/neutron/v2_0/__init__.py

@@ -528,18 +528,20 @@ class DeleteCommand(NeutronCommand):
                   % {'id': ", ".join(successful_delete),
                      'resource': self.cmd_resource},
                   file=self.app.stdout)
-        if non_existent:
-            print((_("Unable to find %(resource)s(s) with id(s) "
-                     "'%(id)s'") %
-                  {'resource': self.cmd_resource,
-                   'id': ", ".join(non_existent)}),
-                  file=self.app.stdout)
-        if multiple_ids:
-            print((_("Multiple %(resource)s(s) matches found for name(s)"
-                     " '%(id)s'. Please use an ID to be more specific.")) %
-                  {'resource': self.cmd_resource,
-                   'id': ", ".join(multiple_ids)},
-                  file=self.app.stdout)
+        if non_existent or multiple_ids:
+            err_msgs = []
+            if non_existent:
+                err_msgs.append((_("Unable to find %(resource)s(s) with id(s) "
+                                   "'%(id)s'.") %
+                                 {'resource': self.cmd_resource,
+                                  'id': ", ".join(non_existent)}))
+            if multiple_ids:
+                err_msgs.append((_("Multiple %(resource)s(s) matches found "
+                                   "for name(s) '%(id)s'. Please use an ID "
+                                   "to be more specific.") %
+                                 {'resource': self.cmd_resource,
+                                  'id': ", ".join(multiple_ids)}))
+            raise exceptions.NeutronCLIError(message='\n'.join(err_msgs))
 
     def delete_item(self, obj_deleter, neutron_client, item_id):
         if self.allow_names:

neutronclient/tests/unit/test_cli20.py

@@ -512,7 +512,9 @@ class CLITestV20Base(base.BaseTestCase):
         self.assertIn(myid, _str)
         self.assertIn('myname', _str)
 
-    def _test_set_path_and_delete(self, path, parent_id, myid):
+    def _test_set_path_and_delete(self, path, parent_id, myid,
+                                  delete_fail=False):
+        return_val = 404 if delete_fail else 204
         if parent_id:
             path = path % (parent_id, myid)
         else:
@@ -521,11 +523,12 @@ class CLITestV20Base(base.BaseTestCase):
             end_url(path, format=self.format), 'DELETE',
             body=None,
             headers=mox.ContainsKeyValue(
-                'X-Auth-Token', TOKEN)).AndReturn((MyResp(204), None))
+                'X-Auth-Token', TOKEN)).AndReturn((MyResp(
+                    return_val), None))
 
     def _test_delete_resource(self, resource, cmd, myid, args,
                               cmd_resource=None, parent_id=None,
-                              extra_id=None):
+                              extra_id=None, delete_fail=False):
         self.mox.StubOutWithMock(cmd, "get_client")
         self.mox.StubOutWithMock(self.client.httpclient, "request")
         cmd.get_client().MultipleTimes().AndReturn(self.client)
@@ -535,7 +538,8 @@ class CLITestV20Base(base.BaseTestCase):
         self._test_set_path_and_delete(path, parent_id, myid)
         # extra_id is used to test for bulk_delete
         if extra_id:
-            self._test_set_path_and_delete(path, parent_id, extra_id)
+            self._test_set_path_and_delete(path, parent_id, extra_id,
+                                           delete_fail)
         self.mox.ReplayAll()
         cmd_parser = cmd.get_parser("delete_" + cmd_resource)
         shell.run_command(cmd, cmd_parser, args)

neutronclient/tests/unit/test_cli20_network.py

@@ -597,6 +597,18 @@ class CLITestV20NetworkJSON(test_cli20.CLITestV20Base):
         args = [myid1, myid2]
         self._test_delete_resource(resource, cmd, myid1, args, extra_id=myid2)
 
+    def test_bulk_delete_network_fail(self):
+        # Delete net: myid1 myid2.
+        resource = 'network'
+        cmd = network.DeleteNetwork(test_cli20.MyApp(sys.stdout), None)
+        myid1 = 'myid1'
+        myid2 = 'myid2'
+        args = [myid1, myid2]
+        self.assertRaises(exceptions.NeutronCLIError,
+                          self._test_delete_resource,
+                          resource, cmd, myid1, args, extra_id=myid2,
+                          delete_fail=True)
+
     def _test_extend_list(self, mox_calls):
         data = [{'id': 'netid%d' % i, 'name': 'net%d' % i,
                  'subnets': ['mysubid%d' % i]}