Add basic Keystone CLI tests

New cli.output_parser helpers for parsing 'ascii-tables'
 often used in CLIs output.

New basic tests for keystone cli, verifies only read-only
 actions (return codes and basic structure of output).

Change-Id: I4fea08b14e32c62c47e347b401e3f5703836c184
diff --git a/cli/simple_read_only/test_keystone.py b/cli/simple_read_only/test_keystone.py
new file mode 100644
index 0000000..4b14c3c
--- /dev/null
+++ b/cli/simple_read_only/test_keystone.py
@@ -0,0 +1,109 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2013 OpenStack Foundation
+# All Rights Reserved.
+#
+#    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.
+
+import logging
+import re
+import subprocess
+
+import cli
+
+
+LOG = logging.getLogger(__name__)
+
+
+class SimpleReadOnlyKeystoneClientTest(cli.ClientTestBase):
+    """Basic, read-only tests for Keystone CLI client.
+
+    Checks return values and output of read-only commands.
+    These tests do not presume any content, nor do they create
+    their own. They only verify the structure of output if present.
+    """
+
+    def test_admin_fake_action(self):
+        self.assertRaises(subprocess.CalledProcessError,
+                          self.keystone,
+                          'this-does-not-exist')
+
+    def test_admin_catalog_list(self):
+        out = self.keystone('catalog')
+        catalog = self.parser.details_multiple(out, with_label=True)
+        for svc in catalog:
+            self.assertTrue(svc['__label'].startswith('Service:'))
+
+    def test_admin_endpoint_list(self):
+        out = self.keystone('endpoint-list')
+        endpoints = self.parser.listing(out)
+        self.assertTableStruct(endpoints, [
+            'id', 'region', 'publicurl', 'internalurl',
+            'adminurl', 'service_id'])
+
+    def test_admin_endpoint_service_match(self):
+        endpoints = self.parser.listing(self.keystone('endpoint-list'))
+        services = self.parser.listing(self.keystone('service-list'))
+        svc_by_id = {}
+        for svc in services:
+            svc_by_id[svc['id']] = svc
+        for endpoint in endpoints:
+            self.assertIn(endpoint['service_id'], svc_by_id)
+
+    def test_admin_role_list(self):
+        roles = self.parser.listing(self.keystone('role-list'))
+        self.assertTableStruct(roles, ['id', 'name'])
+
+    def test_admin_service_list(self):
+        services = self.parser.listing(self.keystone('service-list'))
+        self.assertTableStruct(services, ['id', 'name', 'type', 'description'])
+
+    def test_admin_tenant_list(self):
+        tenants = self.parser.listing(self.keystone('tenant-list'))
+        self.assertTableStruct(tenants, ['id', 'name', 'enabled'])
+
+    def test_admin_user_list(self):
+        users = self.parser.listing(self.keystone('user-list'))
+        self.assertTableStruct(users, [
+            'id', 'name', 'enabled', 'email'])
+
+    def test_admin_user_role_list(self):
+        user_roles = self.parser.listing(self.keystone('user-role-list'))
+        self.assertTableStruct(user_roles, [
+            'id', 'name', 'user_id', 'tenant_id'])
+
+    def test_admin_discover(self):
+        discovered = self.keystone('discover')
+        self.assertIn('Keystone found at http', discovered)
+        self.assertIn('supports version', discovered)
+
+    def test_admin_help(self):
+        help_text = self.keystone('help')
+        lines = help_text.split('\n')
+        self.assertTrue(lines[0].startswith('usage: keystone'))
+
+        commands = []
+        cmds_start = lines.index('Positional arguments:')
+        cmds_end = lines.index('Optional arguments:')
+        command_pattern = re.compile('^ {4}([a-z0-9\-\_]+)')
+        for line in lines[cmds_start:cmds_end]:
+            match = command_pattern.match(line)
+            if match:
+                commands.append(match.group(1))
+        commands = set(commands)
+        wanted_commands = set(('catalog', 'endpoint-list', 'help',
+                               'token-get', 'discover', 'bootstrap'))
+        self.assertFalse(wanted_commands - commands)
+
+    def test_admin_bashcompletion(self):
+        self.keystone('bash-completion')