1 files changed, 57 insertions, 0 deletions
diff --git a/nova/tests/scheduler/filters/test_disk_filters.py b/nova/tests/scheduler/filters/test_disk_filters.py
new file mode 100644
index 0000000000..668b6f09df
--- /dev/null
+++ b/nova/tests/scheduler/filters/test_disk_filters.py
@@ -0,0 +1,57 @@
+#    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 nova.scheduler.filters import disk_filter
+from nova import test
+from nova.tests.scheduler import fakes
+
+
+class TestDiskFilter(test.NoDBTestCase):
+
+    def setUp(self):
+        super(TestDiskFilter, self).setUp()
+        self.filt_cls = disk_filter.DiskFilter()
+
+    def test_disk_filter_passes(self):
+        self.flags(disk_allocation_ratio=1.0)
+        filter_properties = {'instance_type': {'root_gb': 1,
+            'ephemeral_gb': 1, 'swap': 512}}
+        host = fakes.FakeHostState('host1', 'node1',
+                {'free_disk_mb': 11 * 1024, 'total_usable_disk_gb': 13})
+        self.assertTrue(self.filt_cls.host_passes(host, filter_properties))
+
+    def test_disk_filter_fails(self):
+        self.flags(disk_allocation_ratio=1.0)
+        filter_properties = {'instance_type': {'root_gb': 10,
+            'ephemeral_gb': 1, 'swap': 1024}}
+        host = fakes.FakeHostState('host1', 'node1',
+                {'free_disk_mb': 11 * 1024, 'total_usable_disk_gb': 13})
+        self.assertFalse(self.filt_cls.host_passes(host, filter_properties))
+
+    def test_disk_filter_oversubscribe(self):
+        self.flags(disk_allocation_ratio=10.0)
+        filter_properties = {'instance_type': {'root_gb': 100,
+            'ephemeral_gb': 18, 'swap': 1024}}
+        # 1GB used... so 119GB allowed...
+        host = fakes.FakeHostState('host1', 'node1',
+                {'free_disk_mb': 11 * 1024, 'total_usable_disk_gb': 12})
+        self.assertTrue(self.filt_cls.host_passes(host, filter_properties))
+        self.assertEqual(12 * 10.0, host.limits['disk_gb'])
+
+    def test_disk_filter_oversubscribe_fail(self):
+        self.flags(disk_allocation_ratio=10.0)
+        filter_properties = {'instance_type': {'root_gb': 100,
+            'ephemeral_gb': 19, 'swap': 1024}}
+        # 1GB used... so 119GB allowed...
+        host = fakes.FakeHostState('host1', 'node1',
+                {'free_disk_mb': 11 * 1024, 'total_usable_disk_gb': 12})
+        self.assertFalse(self.filt_cls.host_passes(host, filter_properties))