First pass at validation unit tests. Haven't figured out class methods yet.

nova/tests/validator_unittest.py

@@ -0,0 +1,41 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+# Copyright [2010] [Anso Labs, LLC]
+#
+#    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 logging
+import unittest
+
+from nova import vendor
+
+from nova import flags
+from nova import test
+from nova import validate
+
+
+class ValidationTestCase(test.TrialTestCase):
+    def setUp(self):
+        super(ValidationTestCase, self).setUp()
+
+    def tearDown(self):
+        super(ValidationTestCase, self).tearDown()
+
+    def test_type_validation(self):
+        self.assertTrue(type_case("foo", 5, 1))
+        self.assertRaises(TypeError, type_case, "bar", "5", 1)
+        self.assertRaises(TypeError, type_case, None, 5, 1)
+        
+@validate.typetest(instanceid=str, size=int, number_of_instances=int)
+def type_case(instanceid, size, number_of_instances):
+    print ("type_case was successfully executed")
+    return True

nova/validate.py

@@ -63,17 +63,17 @@ def typetest(**argchecks):
     
         def onCall(*pargs, **kargs):
             positionals = list(allargs)[:len(pargs)]
-            for (argname, type) in argchecks.items():
+            for (argname, typeof) in argchecks.items():
                 if argname in kargs:
-                    if not isinstance(kargs[argname], type):
+                    if not isinstance(kargs[argname], typeof):
                         errmsg = '{0} argument "{1}" not of type {2}'
-                        errmsg = errmsg.format(funcname, argname, type)
+                        errmsg = errmsg.format(funcname, argname, typeof)
                         raise TypeError(errmsg)
                 elif argname in positionals:
                     position = positionals.index(argname)
-                    if not isinstance(pargs[position], type):
+                    if not isinstance(pargs[position], typeof):
-                        errmsg = '{0} argument "{1}" not of type {2}'
+                        errmsg = '{0} argument "{1}" with value of {2} not of type {3}'
-                        errmsg = errmsg.format(funcname, argname, type)
+                        errmsg = errmsg.format(funcname, argname, pargs[position], typeof)
                         raise TypeError(errmsg)
                 else:
                     pass