add test for accessing let through the class

gistfile1.diff

commit 0e4888f0e49557cdf36e38a91a74f462a1206fc4
Author: Sumeet Agarwal <sumeet.a@gmail.com>
Date:   Thu Sep 27 22:05:22 2012 -0700

    add test for accessing let through the class

diff --git a/test/test_case_test.py b/test/test_case_test.py
index 66f6fd3..2bd2875 100644
--- a/test/test_case_test.py
+++ b/test/test_case_test.py
@@ -2,6 +2,7 @@ import itertools
 import unittest
 
 from testify import assert_equal
+from testify import assert_isinstance
 from testify import class_setup
 from testify import class_setup_teardown
 from testify import class_teardown
@@ -495,6 +496,10 @@ class LetTest(TestCase):
         assert_equal(self.counter.next(), 0)
         assert_equal(self.counter.next(), 1)
 
+    def test_returns_itself_when_accessed_through_the_class(self):
+        assert_isinstance(type(self).counter, let)
+
+
 class LetWithLambdaTest(TestCase):
 
     counter = let(lambda self: itertools.count(0))