code: def test_concatenate_f_contiguous(self, xp, dtype):
      a = testing.shaped_arange((2, 3, 4), xp, dtype)
      b = testing.shaped_arange((2, 3, 2), xp, dtype).T
      c = testing.shaped_arange((2, 3, 3), xp, dtype)
      return xp.concatenate((a, b, c), axis=-1)
  
imports: import numpy
  import pytest
  import cupy
  from cupy import testing
  from cupy import cuda
label_desc: Use image node_id 13 for calling the TestJoin obj's underlying member method code with example usage: obj.test_concatenate_f_contiguous(xp, dtype) and returns: xp