1 files changed, 36 insertions, 0 deletions
diff --git a/nova/tests/unit/fake_utils.py b/nova/tests/unit/fake_utils.py
new file mode 100644
index 0000000000..7a97866d20
--- /dev/null
+++ b/nova/tests/unit/fake_utils.py
@@ -0,0 +1,36 @@
+# Copyright (c) 2013 Rackspace Hosting
+#
+#    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.
+
+"""This modules stubs out functions in nova.utils."""
+
+from nova import utils
+
+
+def stub_out_utils_spawn_n(stubs):
+    """Stubs out spawn_n with a blocking version.
+
+    This aids testing async processes by blocking until they're done.
+    """
+    def no_spawn(func, *args, **kwargs):
+        try:
+            return func(*args, **kwargs)
+        except Exception:
+            # NOTE(danms): This is supposed to simulate spawning
+            # of a thread, which would run separate from the parent,
+            # and die silently on error. If we don't catch and discard
+            # any exceptions here, we're not honoring the usual
+            # behavior.
+            pass
+
+    stubs.Set(utils, 'spawn_n', no_spawn)