fixed the assertion raised.

theano/sandbox/cuda/tests/test_opt.py

@@ -100,13 +100,12 @@ def test_local_assert_no_cpu_op():
 
     mode_local_assert = mode_with_gpu.including("local_assert_no_cpu_op")
     mode_local_assert = mode_local_assert.excluding("local_gpu_elemwise_1")
-
     old = config.assert_no_cpu_op
 
     # If the flag is raise
     try:
         config.assert_no_cpu_op = 'raise'
-        assert_raises(AssertionError, theano.function([], out,
+        assert_raises(RuntimeError, theano.function([], out,
                       mode=mode_local_assert))
     finally:
         config.assert_no_cpu_op = old