hub: new addArchiveType RPC

Add a new hub method for inserting new archivetype records.

This closely matches addBType.

The purpose of this change is to make it easier to permit content
generators to import files with extensions that we have not defined in
the upstream packaged koji SQL file.

tests/test_hub/test_add_archivetype.py

@@ -0,0 +1,53 @@
+from __future__ import absolute_import
+try:
+    import unittest2 as unittest
+except ImportError:
+    import unittest
+import mock
+
+import koji
+import kojihub
+
+IP = kojihub.InsertProcessor
+
+
+class TestAddArchiveType(unittest.TestCase):
+
+    @mock.patch('kojihub._multiRow')
+    @mock.patch('kojihub.get_archive_type')
+    @mock.patch('kojihub.InsertProcessor')
+    def test_add_archive_type(self, InsertProcessor, get_archive_type,
+                              _multiRow):
+        # Not sure why mock can't patch kojihub.context, so we do this
+        session = kojihub.context.session = mock.MagicMock()
+        mocks = [InsertProcessor, get_archive_type, session]
+        # It seems MagicMock will not automatically handle attributes that
+        # start with "assert"
+        session.assertPerm = mock.MagicMock()
+
+        # expected case
+        get_archive_type.return_value = None
+        insert = InsertProcessor.return_value
+        kojihub.add_archive_type('deb', 'Debian package', 'deb')
+        InsertProcessor.assert_called_once()
+        insert.execute.assert_called_once()
+
+        args, kwargs = InsertProcessor.call_args
+        ip = IP(*args, **kwargs)
+        self.assertEquals(ip.table, 'archivetypes')
+        self.assertEquals(ip.data, {'name': 'deb',
+                                    'description': 'Debian package',
+                                    'extensions': 'deb'})
+        self.assertEquals(ip.rawdata, {})
+        session.assertPerm.assert_called_with('admin')
+
+        for m in mocks:
+            m.reset_mock()
+        session.assertPerm = mock.MagicMock()
+
+        # already exists
+        get_archive_type.return_value = True
+        with self.assertRaises(koji.GenericError):
+            kojihub.add_archive_type('deb', 'Debian package', 'deb')
+        InsertProcessor.assert_not_called()
+        session.assertPerm.assert_called_with('admin')