convert usage of fail* to assert*
diff --git a/Lib/test/test_sha.py b/Lib/test/test_sha.py
index 0647db3..6b38435 100644
--- a/Lib/test/test_sha.py
+++ b/Lib/test/test_sha.py
@@ -18,19 +18,19 @@
         # Check digest matches the expected value
         obj = sha.new(data)
         computed = obj.hexdigest()
-        self.assert_(computed == digest)
+        self.assertTrue(computed == digest)
 
         # Verify that the value doesn't change between two consecutive
         # digest operations.
         computed_again = obj.hexdigest()
-        self.assert_(computed == computed_again)
+        self.assertTrue(computed == computed_again)
 
         # Check hexdigest() output matches digest()'s output
         digest = obj.digest()
         hexd = ""
         for c in digest:
             hexd += '%02x' % ord(c)
-        self.assert_(computed == hexd)
+        self.assertTrue(computed == hexd)
 
     def test_case_1(self):
         self.check("abc",