Patch by Christian Heimes to change self.assert_(x == y) into
self.assertEqual(x, y).  (Christian used self.failUnlessEqual(),
but the double negative makes it hard to grok, so I changed it.)
diff --git a/Lib/test/test_unary.py b/Lib/test/test_unary.py
index d8e86a9..dbefe62 100644
--- a/Lib/test/test_unary.py
+++ b/Lib/test/test_unary.py
@@ -7,24 +7,24 @@
 
     def test_negative(self):
         self.assert_(-2 == 0 - 2)
-        self.assert_(-0 == 0)
-        self.assert_(--2 == 2)
+        self.assertEqual(-0, 0)
+        self.assertEqual(--2, 2)
         self.assert_(-2 == 0 - 2)
         self.assert_(-2.0 == 0 - 2.0)
         self.assert_(-2j == 0 - 2j)
 
     def test_positive(self):
-        self.assert_(+2 == 2)
-        self.assert_(+0 == 0)
-        self.assert_(++2 == 2)
-        self.assert_(+2 == 2)
-        self.assert_(+2.0 == 2.0)
-        self.assert_(+2j == 2j)
+        self.assertEqual(+2, 2)
+        self.assertEqual(+0, 0)
+        self.assertEqual(++2, 2)
+        self.assertEqual(+2, 2)
+        self.assertEqual(+2.0, 2.0)
+        self.assertEqual(+2j, 2j)
 
     def test_invert(self):
         self.assert_(-2 == 0 - 2)
-        self.assert_(-0 == 0)
-        self.assert_(--2 == 2)
+        self.assertEqual(-0, 0)
+        self.assertEqual(--2, 2)
         self.assert_(-2 == 0 - 2)
 
     def test_no_overflow(self):