image: Add 'image task show' commands

This replaces and the 'glance task-show' command. For example:

  $ image task show <TASK_ID>

Change-Id: I74cb23e436c373fe238804b903bbeb28f643d5af

1 files changed, 80 insertions, 0 deletions

diff --git a/openstackclient/tests/unit/image/v2/test_task.py b/openstackclient/tests/unit/image/v2/test_task.py
new file mode 100644
index 00000000..90fa11d8
--- /dev/null
+++ b/openstackclient/tests/unit/image/v2/test_task.py
@@ -0,0 +1,80 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+from osc_lib.cli import format_columns
+
+from openstackclient.image.v2 import task
+from openstackclient.tests.unit.image.v2 import fakes as image_fakes
+
+
+class TestTask(image_fakes.TestImagev2):
+    def setUp(self):
+        super().setUp()
+
+        # Get shortcuts to mocked image client
+        self.client = self.app.client_manager.image
+
+
+class TestTaskShow(TestTask):
+
+    task = image_fakes.create_one_task()
+
+    columns = (
+        'created_at',
+        'expires_at',
+        'id',
+        'input',
+        'message',
+        'owner_id',
+        'properties',
+        'result',
+        'status',
+        'type',
+        'updated_at',
+    )
+    data = (
+        task.created_at,
+        task.expires_at,
+        task.id,
+        task.input,
+        task.message,
+        task.owner_id,
+        format_columns.DictColumn({}),
+        task.result,
+        task.status,
+        task.type,
+        task.updated_at,
+    )
+
+    def setUp(self):
+        super().setUp()
+
+        self.client.get_task.return_value = self.task
+
+        # Get the command object to test
+        self.cmd = task.ShowTask(self.app, None)
+
+    def test_task_show(self):
+        arglist = [self.task.id]
+        verifylist = [
+            ('task', self.task.id),
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        # In base command class ShowOne in cliff, abstract method take_action()
+        # returns a two-part tuple with a tuple of column names and a tuple of
+        # data to be shown.
+        columns, data = self.cmd.take_action(parsed_args)
+        self.client.get_task.assert_called_with(self.task.id)
+
+        self.assertEqual(self.columns, columns)
+        self.assertCountEqual(self.data, data)