Fixed wrong oracle from copy/paste.

test_nim_evaluator.py

@@ -22,7 +22,7 @@ class TestNimEvaluator(TestCase):
         self.assertEqual(evaluate([1, 1]), Evaluation.WIN)
 
     def test_pairs_of_equal_heaps_cancel(self):
-        self.assertEqual(evaluate([1, 2, 2]), Evaluation.WIN)
+        self.assertEqual(evaluate([1, 2, 2]), Evaluation.LOSS)
 
     def test_three_distinct_heaps_that_cancel(self):
         self.assertEqual(evaluate([3, 2, 1]), Evaluation.WIN)