repr for binary

pymongo/binary.py

@@ -27,4 +27,5 @@ def is_binary(data):
 class Binary(str):
     """Binary data stored in or retrieved from Mongo.
     """
-    pass
+    def __repr__(self):
+        return "Binary(%s)" % str.__repr__(self)

test/test_binary.py

@@ -30,5 +30,11 @@ class TestBinary(unittest.TestCase):
         self.assertTrue(binary.is_binary(a_binary))
         self.assertFalse(binary.is_binary(a_string))
 
+    def test_repr(self):
+        b = binary.Binary("hello world")
+        self.assertEqual(repr(b), "Binary('hello world')")
+        c = binary.Binary("\x08\xFF")
+        self.assertEqual(repr(c), "Binary('\\x08\\xff')")
+
 if __name__ == "__main__":
     unittest.main()