Implement "address scope show" command

This patch add a command that supports
showing address scope details

Change-Id: Ic0b41c1cab8c618904c7a6046d7493db5b74b430
Partial-Bug: #1566269

Author: Huanxuan Ao

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

@@ -72,3 +72,19 @@ List address scopes
 .. code:: bash
 
     os address scope list
+
+address scope show
+------------------
+
+Display address scope details
+
+.. program:: address scope show
+.. code:: bash
+
+    os address scope show
+        <address-scope>
+
+.. _address_scope_show-address-scope:
+.. describe:: <address-scope>
+
+    Address scope to display (name or ID)

openstackclient/network/v2/address_scope.py

@@ -140,3 +140,27 @@ def take_action(self, parsed_args):
                 (utils.get_item_properties(
                     s, columns, formatters={},
                 ) for s in data))
+
+
+class ShowAddressScope(command.ShowOne):
+    """Display address scope details"""
+
+    def get_parser(self, prog_name):
+        parser = super(ShowAddressScope, self).get_parser(prog_name)
+        parser.add_argument(
+            'address_scope',
+            metavar="<address-scope>",
+            help=_("Address scope to display (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,
+            ignore_missing=False)
+        columns = _get_columns(obj)
+        data = utils.get_item_properties(obj, columns, formatters={})
+
+        return columns, data

openstackclient/tests/network/v2/test_address_scope.py

@@ -235,3 +235,56 @@ def test_address_scope_list(self):
         self.network.address_scopes.assert_called_once_with(**{})
         self.assertEqual(self.columns, columns)
         self.assertEqual(self.data, list(data))
+
+
+class TestShowAddressScope(TestAddressScope):
+
+    # The address scope to show.
+    _address_scope = (
+        network_fakes.FakeAddressScope.create_one_address_scope())
+    columns = (
+        'id',
+        'ip_version',
+        'name',
+        'project_id',
+        'shared',
+    )
+    data = (
+        _address_scope.id,
+        _address_scope.ip_version,
+        _address_scope.name,
+        _address_scope.project_id,
+        _address_scope.shared,
+    )
+
+    def setUp(self):
+        super(TestShowAddressScope, self).setUp()
+        self.network.find_address_scope = mock.Mock(
+            return_value=self._address_scope)
+
+        # Get the command object to test
+        self.cmd = address_scope.ShowAddressScope(self.app, self.namespace)
+
+    def test_show_no_options(self):
+        arglist = []
+        verifylist = []
+
+        # Missing required args should bail here
+        self.assertRaises(tests_utils.ParserException, self.check_parser,
+                          self.cmd, arglist, verifylist)
+
+    def test_show_all_options(self):
+        arglist = [
+            self._address_scope.name,
+        ]
+        verifylist = [
+            ('address_scope', self._address_scope.name),
+        ]
+
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+        columns, data = self.cmd.take_action(parsed_args)
+
+        self.network.find_address_scope.assert_called_once_with(
+            self._address_scope.name, ignore_missing=False)
+        self.assertEqual(self.columns, columns)
+        self.assertEqual(list(self.data), list(data))

setup.cfg

@@ -322,6 +322,7 @@ openstack.network.v2 =
     address_scope_create = openstackclient.network.v2.address_scope:CreateAddressScope
     address_scope_delete = openstackclient.network.v2.address_scope:DeleteAddressScope
     address_scope_list = openstackclient.network.v2.address_scope:ListAddressScope
+    address_scope_show = openstackclient.network.v2.address_scope:ShowAddressScope
 
     ip_floating_create = openstackclient.network.v2.floating_ip:CreateFloatingIP
     ip_floating_delete = openstackclient.network.v2.floating_ip:DeleteFloatingIP