code: def test_flip_empty_dim_1(self, xp, dtype):
      x = xp.array([], dtype).reshape((0,))
      return xp.flip(x, 0)
  
imports: import unittest
  import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 7 for calling the TestFlip obj's underlying member method code with example usage: obj.test_flip_empty_dim_1(xp, dtype) and returns: xp