Added a useful unit test primitive for asserting object attributes

tests/unittest.py

@@ -71,6 +71,17 @@ class TestCase(unittest.TestCase):
             logging.getLogger().setLevel(level)
             return orig()
 
+    def assertObjectHasAttributes(self, attrs, obj):
+        """Asserts that the given object has each of the attributes given, and
+        that the value of each matches according to assertEquals."""
+        for (key, value) in attrs.items():
+            if not hasattr(obj, key):
+                raise AssertionError("Expected obj to have a '.%s'" % key)
+            try:
+                self.assertEquals(attrs[key], getattr(obj, key))
+            except AssertionError as e:
+                raise (type(e))(e.message + " for '.%s'" % key)
+
 
 def DEBUG(target):
     """A decorator to set the .loglevel attribute to logging.DEBUG.