Merge "Default --nic to 'auto' if creating a server with >= 2.37"

openstackclient/compute/v2/server.py

@@ -809,9 +809,14 @@ class CreateServer(command.ShowOne):
                     raise exceptions.CommandError(msg)
                 nics = nics[0]
         else:
-            # Default to empty list if nothing was specified, let nova side to
-            # decide the default behavior.
-            nics = []
+            # Compute API version >= 2.37 requires a value, so default to
+            # 'auto' to maintain legacy behavior if a nic wasn't specified.
+            if compute_client.api_version >= api_versions.APIVersion('2.37'):
+                nics = 'auto'
+            else:
+                # Default to empty list if nothing was specified, let nova
+                # side to decide the default behavior.
+                nics = []
 
         # Check security group exist and convert ID to name
         security_group_names = []

openstackclient/tests/functional/compute/v2/test_server.py

@@ -618,7 +618,9 @@ class ServerTests(common.ComputeTestCase):
                 server_name
             )
         except exceptions.CommandFailed as e:
-            self.assertIn('nics are required after microversion 2.36',
-                          e.stderr)
-        else:
-            self.fail('CommandFailed should be raised.')
+            # If we got here, it shouldn't be because a nics value wasn't
+            # provided to the server; it is likely due to something else in
+            # the functional tests like there being multiple available
+            # networks and the test didn't specify a specific network.
+            self.assertNotIn('nics are required after microversion 2.36',
+                             e.stderr)

openstackclient/tests/unit/compute/v2/fakes.py

@@ -17,6 +17,7 @@ import copy
 import uuid
 
 import mock
+from novaclient import api_versions
 
 from openstackclient.api import compute_v2
 from openstackclient.tests.unit import fakes
@@ -201,6 +202,8 @@ class FakeComputev2Client(object):
 
         self.management_url = kwargs['endpoint']
 
+        self.api_version = api_versions.APIVersion('2.1')
+
 
 class TestComputev2(utils.TestCommand):
 

openstackclient/tests/unit/compute/v2/test_server.py

@@ -845,6 +845,55 @@ class TestServerCreate(TestServer):
         self.assertEqual(self.columns, columns)
         self.assertEqual(self.datalist(), data)
 
+    def test_server_create_with_auto_network_default_v2_37(self):
+        """Tests creating a server without specifying --nic using 2.37."""
+        arglist = [
+            '--image', 'image1',
+            '--flavor', 'flavor1',
+            self.new_server.name,
+        ]
+        verifylist = [
+            ('image', 'image1'),
+            ('flavor', 'flavor1'),
+            ('config_drive', False),
+            ('server_name', self.new_server.name),
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        # Since check_parser doesn't handle compute global options like
+        # --os-compute-api-version, we have to mock the construction of
+        # the novaclient client object with our own APIVersion.
+        with mock.patch.object(self.app.client_manager.compute, 'api_version',
+                               api_versions.APIVersion('2.37')):
+            columns, data = self.cmd.take_action(parsed_args)
+
+        # Set expected values
+        kwargs = dict(
+            meta=None,
+            files={},
+            reservation_id=None,
+            min_count=1,
+            max_count=1,
+            security_groups=[],
+            userdata=None,
+            key_name=None,
+            availability_zone=None,
+            block_device_mapping_v2=[],
+            nics='auto',
+            scheduler_hints={},
+            config_drive=None,
+        )
+        # ServerManager.create(name, image, flavor, **kwargs)
+        self.servers_mock.create.assert_called_with(
+            self.new_server.name,
+            self.image,
+            self.flavor,
+            **kwargs
+        )
+
+        self.assertEqual(self.columns, columns)
+        self.assertEqual(self.datalist(), data)
+
     def test_server_create_with_none_network(self):
         arglist = [
             '--image', 'image1',