convert usage of fail* to assert*
diff --git a/Lib/test/test_binop.py b/Lib/test/test_binop.py
index b3d9a62..8ae8f42 100644
--- a/Lib/test/test_binop.py
+++ b/Lib/test/test_binop.py
@@ -220,10 +220,10 @@
         self.assertEqual(gcd(-10, -2), -2)
         for i in range(1, 20):
             for j in range(1, 20):
-                self.assert_(gcd(i, j) > 0)
-                self.assert_(gcd(-i, j) < 0)
-                self.assert_(gcd(i, -j) > 0)
-                self.assert_(gcd(-i, -j) < 0)
+                self.assertTrue(gcd(i, j) > 0)
+                self.assertTrue(gcd(-i, j) < 0)
+                self.assertTrue(gcd(i, -j) > 0)
+                self.assertTrue(gcd(-i, -j) < 0)
 
     def test_constructor(self):
         a = Rat(10, 15)