Added @test.skip_unless and @test.skip_if functionality. Also created nova/tests/test_skip_examples.py to show the skip cases usage.

2 files changed, 68 insertions, 0 deletions

diff --git a/nova/test.py b/nova/test.py
index 549aa6fcf..afc118100 100644
--- a/nova/test.py
+++ b/nova/test.py
@@ -67,6 +67,37 @@ class skip_test(object):
         _skipper.__doc__ = func.__doc__
         return _skipper
 
+class skip_if(object):
+    """Decorator that skips a test if contition is true."""
+    def __init__(self, condition, msg):
+        self.condition = condition
+        self.message = msg
+
+    def __call__(self, func):
+        def _skipper(*args, **kw):
+            """Wrapped skipper function."""
+            if self.condition:
+                raise nose.SkipTest(self.message)
+        _skipper.__name__ = func.__name__
+        _skipper.__doc__ = func.__doc__
+        return _skipper
+
+
+class skip_unless(object):
+    """Decorator that skips a test if condition is false."""
+    def __init__(self, condition, msg):
+        self.condition = condition
+        self.message = msg
+
+    def __call__(self, func):
+        def _skipper(*args, **kw):
+            """Wrapped skipper function."""
+            if not self.condition:
+                raise nose.SkipTest(self.message)
+        _skipper.__name__ = func.__name__
+        _skipper.__doc__ = func.__doc__
+        return _skipper
+
 
 def skip_if_fake(func):
     """Decorator that skips a test if running in fake mode."""
diff --git a/nova/tests/test_skip_examples.py b/nova/tests/test_skip_examples.py
new file mode 100644
index 000000000..dfbaac74b
--- /dev/null
+++ b/nova/tests/test_skip_examples.py
@@ -0,0 +1,37 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2010 United States Government as represented by the
+# Administrator of the National Aeronautics and Space Administration.
+# 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.
+
+import os
+
+from nova import test
+
+
+class ExampleSkipTestCase(test.TestCase):
+    @test.skip_test("testing skipping")
+    def test_skip_test(self):
+        x = 1
+
+    @test.skip_if(os.getenv("USER"),
+           "Skiping -- Environment variable USER exists")
+    def test_skip_if_env_user_exists(self):
+        x = 1
+
+    @test.skip_unless(os.getenv("BLAH"),
+           "Skipping -- Environment variable BLAH does not exist")
+    def test_skip_unless_env_blah_exists(self):
+        x = 1