1 files changed, 103 insertions, 0 deletions
diff --git a/nova/tests/unit/cells/test_cells_utils.py b/nova/tests/unit/cells/test_cells_utils.py
new file mode 100644
index 0000000000..44141150b6
--- /dev/null
+++ b/nova/tests/unit/cells/test_cells_utils.py
@@ -0,0 +1,103 @@
+# Copyright (c) 2012 Rackspace Hosting
+# 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.
+"""
+Tests For Cells Utility methods
+"""
+import inspect
+import random
+
+from nova.cells import utils as cells_utils
+from nova import db
+from nova import test
+
+
+class CellsUtilsTestCase(test.NoDBTestCase):
+    """Test case for Cells utility methods."""
+    def test_get_instances_to_sync(self):
+        fake_context = 'fake_context'
+
+        call_info = {'get_all': 0, 'shuffle': 0}
+
+        def random_shuffle(_list):
+            call_info['shuffle'] += 1
+
+        def instance_get_all_by_filters(context, filters,
+                sort_key, sort_order):
+            self.assertEqual(context, fake_context)
+            self.assertEqual(sort_key, 'deleted')
+            self.assertEqual(sort_order, 'asc')
+            call_info['got_filters'] = filters
+            call_info['get_all'] += 1
+            return ['fake_instance1', 'fake_instance2', 'fake_instance3']
+
+        self.stubs.Set(db, 'instance_get_all_by_filters',
+                instance_get_all_by_filters)
+        self.stubs.Set(random, 'shuffle', random_shuffle)
+
+        instances = cells_utils.get_instances_to_sync(fake_context)
+        self.assertTrue(inspect.isgenerator(instances))
+        self.assertEqual(len([x for x in instances]), 3)
+        self.assertEqual(call_info['get_all'], 1)
+        self.assertEqual(call_info['got_filters'], {})
+        self.assertEqual(call_info['shuffle'], 0)
+
+        instances = cells_utils.get_instances_to_sync(fake_context,
+                                                      shuffle=True)
+        self.assertTrue(inspect.isgenerator(instances))
+        self.assertEqual(len([x for x in instances]), 3)
+        self.assertEqual(call_info['get_all'], 2)
+        self.assertEqual(call_info['got_filters'], {})
+        self.assertEqual(call_info['shuffle'], 1)
+
+        instances = cells_utils.get_instances_to_sync(fake_context,
+                updated_since='fake-updated-since')
+        self.assertTrue(inspect.isgenerator(instances))
+        self.assertEqual(len([x for x in instances]), 3)
+        self.assertEqual(call_info['get_all'], 3)
+        self.assertEqual(call_info['got_filters'],
+                {'changes-since': 'fake-updated-since'})
+        self.assertEqual(call_info['shuffle'], 1)
+
+        instances = cells_utils.get_instances_to_sync(fake_context,
+                project_id='fake-project',
+                updated_since='fake-updated-since', shuffle=True)
+        self.assertTrue(inspect.isgenerator(instances))
+        self.assertEqual(len([x for x in instances]), 3)
+        self.assertEqual(call_info['get_all'], 4)
+        self.assertEqual(call_info['got_filters'],
+                {'changes-since': 'fake-updated-since',
+                 'project_id': 'fake-project'})
+        self.assertEqual(call_info['shuffle'], 2)
+
+    def test_split_cell_and_item(self):
+        path = 'australia', 'queensland', 'gold_coast'
+        cell = cells_utils.PATH_CELL_SEP.join(path)
+        item = 'host_5'
+        together = cells_utils.cell_with_item(cell, item)
+        self.assertEqual(cells_utils._CELL_ITEM_SEP.join([cell, item]),
+                         together)
+
+        # Test normal usage
+        result_cell, result_item = cells_utils.split_cell_and_item(together)
+        self.assertEqual(cell, result_cell)
+        self.assertEqual(item, result_item)
+
+        # Test with no cell
+        cell = None
+        together = cells_utils.cell_with_item(cell, item)
+        self.assertEqual(item, together)
+        result_cell, result_item = cells_utils.split_cell_and_item(together)
+        self.assertEqual(cell, result_cell)
+        self.assertEqual(item, result_item)