Implement "address scope delete" command

This patch add a command that supports
deleting a address scope

Change-Id: Ie028058c759b9511d105a530d7e89b841865e7d6
Partial-Bug: #1566269

Author: Huanxuan Ao

doc/source/command-objects/address-scope.rst

@@ -46,3 +46,19 @@ Create new address scope
 .. describe:: <name>
 
      New address scope name
+
+address scope delete
+--------------------
+
+Delete an address scope
+
+.. program:: address scope delete
+.. code:: bash
+
+    os address scope delete
+        <address-scope>
+
+.. _address_scope_delete-address-scope:
+.. describe:: <address-scope>
+
+    Address scope to delete (name or ID)

openstackclient/network/v2/address_scope.py

@@ -94,3 +94,22 @@ def take_action(self, parsed_args):
         data = utils.get_item_properties(obj, columns, formatters={})
 
         return columns, data
+
+
+class DeleteAddressScope(command.Command):
+    """Delete an address scope"""
+
+    def get_parser(self, prog_name):
+        parser = super(DeleteAddressScope, self).get_parser(prog_name)
+        parser.add_argument(
+            'address_scope',
+            metavar="<address-scope>",
+            help=_("Address scope to delete (name or ID)")
+        )
+
+        return parser
+
+    def take_action(self, parsed_args):
+        client = self.app.client_manager.network
+        obj = client.find_address_scope(parsed_args.address_scope)
+        client.delete_address_scope(obj)

openstackclient/tests/network/v2/test_address_scope.py

@@ -162,3 +162,34 @@ def test_create_no_share(self):
         })
         self.assertEqual(self.columns, columns)
         self.assertEqual(self.data, data)
+
+
+class TestDeleteAddressScope(TestAddressScope):
+
+    # The address scope to delete.
+    _address_scope = (
+        network_fakes.FakeAddressScope.create_one_address_scope())
+
+    def setUp(self):
+        super(TestDeleteAddressScope, self).setUp()
+        self.network.delete_address_scope = mock.Mock(return_value=None)
+        self.network.find_address_scope = mock.Mock(
+            return_value=self._address_scope)
+
+        # Get the command object to test
+        self.cmd = address_scope.DeleteAddressScope(self.app, self.namespace)
+
+    def test_delete(self):
+        arglist = [
+            self._address_scope.name,
+        ]
+        verifylist = [
+            ('address_scope', self._address_scope.name),
+        ]
+
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        result = self.cmd.take_action(parsed_args)
+        self.network.delete_address_scope.assert_called_once_with(
+            self._address_scope)
+        self.assertIsNone(result)

setup.cfg

@@ -320,6 +320,7 @@ openstack.image.v2 =
 
 openstack.network.v2 =
     address_scope_create = openstackclient.network.v2.address_scope:CreateAddressScope
+    address_scope_delete = openstackclient.network.v2.address_scope:DeleteAddressScope
 
     ip_floating_create = openstackclient.network.v2.floating_ip:CreateFloatingIP
     ip_floating_delete = openstackclient.network.v2.floating_ip:DeleteFloatingIP