code: def test_norm(self, xp, dtype):
      a = testing.shaped_arange(self.shape, xp, dtype)
      res = xp.linalg.norm(a, self.ord, self.axis, self.keepdims)
      if xp == numpy and not isinstance(res, numpy.ndarray):
          real_dtype = a.real.dtype
          if issubclass(real_dtype.type, numpy.inexact):
              # Avoid numpy bug. See numpy/numpy#10667
              res = res.astype(a.real.dtype)
      return res
  
imports: import unittest
  import numpy
  import pytest
  import cupy
  from cupy import testing
  import cupyx
label_desc: Use image node_id 1 for calling the TestNorm obj's underlying member method code with example usage: obj.test_norm(xp, dtype) and returns: res