code: def test_tuple(self, xp, dtype):
      def func(x, y, z):
          w = x * y + z
          (x, w) = (w, x)
          return z * w + y + x
  
      return func
  
imports: import threading
  import unittest
  from unittest import mock
  import pytest
  import cupy
  from cupy import testing
  from cupy_tests.core_tests.fusion_tests import fusion_utils
label_desc: Use image node_id 1 for calling the TestFusionTuple obj's underlying member method code with example usage: obj.test_tuple(xp, dtype) and returns: func, unknown