Fail on unknown Command options

When unknown keyword arguments are passed to a Command, raise an
error instead of ignoring them.

Options used when IPA calls its commands internally are listed
in a new Command attribute called internal_options, and allowed.

Previous patches (0b01751c, c45174d6, c5689e7f) made IPA not use
unknown keyword arguments in its own commands and tests, but since
that some violations were reintroduced in permission_find and tests.
Fix those.

Tests included; both a frontend unittest and a XML-RPC test via the
ping plugin (which was untested previously).

https://fedorahosted.org/freeipa/ticket/2509

tests/test_xmlrpc/test_host_plugin.py

@@ -126,7 +126,7 @@ class test_host(Declarative):
             command=('host_add', [fqdn1],
                 dict(
                     description=u'Test host 1',
-                    locality=u'Undisclosed location 1',
+                    l=u'Undisclosed location 1',
                     force=True,
                 ),
             ),

tests/test_xmlrpc/test_netgroup_plugin.py

@@ -726,7 +726,7 @@ class test_netgroup(Declarative):
 
 
         dict(
-            desc='Add duplicatehost %r to netgroup %r' % (host1, netgroup1),
+            desc='Add duplicate host %r to netgroup %r' % (host1, netgroup1),
             command=(
                 'netgroup_add_member', [netgroup1], dict(host=host1)
             ),
@@ -960,8 +960,8 @@ class test_netgroup(Declarative):
         ),
 
         dict(
-            desc='Search for all netgroups using empty memberuser',
-            command=('netgroup_find', [], dict(memberuser=None)),
+            desc='Search for all netgroups using empty member user',
+            command=('netgroup_find', [], dict(user=None)),
             expected=dict(
                 count=2,
                 truncated=False,

tests/test_xmlrpc/test_permission_plugin.py

@@ -643,6 +643,18 @@ class test_permission(Declarative):
         ),
 
 
+        dict(
+            desc='Search using nonexistent --subtree',
+            command=('permission_find', [], {'subtree': u'foo'}),
+            expected=dict(
+                count=0,
+                truncated=False,
+                summary=u'0 permissions matched',
+                result=[],
+            ),
+        ),
+
+
         dict(
             desc='Delete %r' % permission1_renamed_ucase,
             command=('permission_del', [permission1_renamed_ucase], {}),

tests/test_xmlrpc/test_ping_plugin.py

@@ -0,0 +1,52 @@
+# Authors:
+#   Petr Viktorin <pviktori@redhat.com>
+#
+# Copyright (C) 2012  Red Hat
+# see file 'COPYING' for use and warranty information
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+"""
+Test the `ipalib/plugins/ping.py` module, and XML-RPC in general.
+"""
+
+from ipalib import api, errors, _
+from tests.util import assert_equal, Fuzzy
+from xmlrpc_test import Declarative
+
+
+class test_ping(Declarative):
+
+    tests = [
+        dict(
+            desc='Ping the server',
+            command=('ping', [], {}),
+            expected=dict(
+                summary=Fuzzy('IPA server version .*. API version .*')),
+        ),
+
+        dict(
+            desc='Try to ping with an argument',
+            command=('ping', ['bad_arg'], {}),
+            expected=errors.ZeroArgumentError(name='ping'),
+        ),
+
+        dict(
+            desc='Try to ping with an option',
+            command=('ping', [], dict(bad_arg=True)),
+            expected=errors.OptionError(_('Unknown option: %(option)s'),
+                option='bad_arg'),
+        ),
+
+    ]