fix ut

Author: guschmue

tests/test_graph.py

@@ -249,8 +249,8 @@ def test_relu6(self):
             _ = tf.identity(x_, name="output")
             g = process_tf_graph(sess.graph, opset=self.config.opset)
             self.assertEqual(
-                'digraph { input1 [op_type=Placeholder shape="[2, 3]"] Relu6 [op_type=Relu] Relu6__2 [op_type=Clip] '
-                'output [op_type=Identity] input1:0 -> Relu6 Relu6:0 -> Relu6__2 Relu6__2:0 -> output }',
+                'digraph { input1 [op_type=Placeholder shape="[2, 3]"] Relu6 [op_type=Clip] output [op_type=Identity] '
+                'input1:0 -> Relu6 Relu6:0 -> output }',
                 onnx_to_graphviz(g))
 
     def test_conv2d(self):