Test unicode args and return values with memoize funcs

tests/test_memoize.py

@@ -5,6 +5,7 @@
 # Author: Paul McCarthy <pauldmccarthy@gmail.com>
 #
 
+import six
 
 import numpy as np
 
@@ -24,7 +25,6 @@ def test_memoize():
 
     memoized = memoize.memoize(thefunc)
 
-
     # No args
     for i in range(5):
         assert memoized() == 0
@@ -42,6 +42,13 @@ def test_memoize():
             assert memoized(value=i) == i * 5
         assert timesCalled[0] == 6
 
+    # Unicode arg
+    s = six.u('\u25B2')
+    assert memoized(s) == s * 5
+    assert timesCalled[0] == 7
+    assert memoized(s) == s * 5
+    assert timesCalled[0] == 7
+
 
 def test_memoizeMD5():
     timesCalled = [0]
@@ -71,6 +78,13 @@ def test_memoizeMD5():
             assert memoized(value=i) == i * 5
         assert timesCalled[0] == 6
 
+    # Unicode arg (and return value)
+    s = six.u('\u25B2')
+    assert memoized(s) == s * 5
+    assert timesCalled[0] == 7
+    assert memoized(s) == s * 5
+    assert timesCalled[0] == 7
+
 
 def test_skipUnchanged():
     """