Start conversion to nose.

RIP pry.

1 files changed, 39 insertions, 0 deletions

diff --git a/test/tutils.py b/test/tutils.py
index 8ebb1ecd..c46221a9 100644
--- a/test/tutils.py
+++ b/test/tutils.py
@@ -133,3 +133,42 @@ class ProxTest(libpry.AutoTree):
         pthread = self.findAttr("proxy")
         return pthread.tmaster.log
 
+
+
+def raises(exc, obj, *args, **kwargs):
+    """
+        Assert that a callable raises a specified exception.
+
+        :exc An exception class or a string. If a class, assert that an
+        exception of this type is raised. If a string, assert that the string
+        occurs in the string representation of the exception, based on a
+        case-insenstivie match.
+
+        :obj A callable object.
+
+        :args Arguments to be passsed to the callable.
+
+        :kwargs Arguments to be passed to the callable.
+    """
+    try:
+        apply(obj, args, kwargs)
+    except Exception, v:
+        if isinstance(exc, basestring):
+            if exc.lower() in str(v).lower():
+                return
+            else:
+                raise AssertionError(
+                    "Expected %s, but caught %s"%(
+                        repr(str(exc)), v
+                    )
+                )
+        else:
+            if isinstance(v, exc):
+                return
+            else:
+                raise AssertionError(
+                    "Expected %s, but caught %s %s"%(
+                        exc.__name__, v.__class__.__name__, str(v)
+                    )
+                )
+    raise AssertionError("No exception raised.")