code: def check(
      self,
      a_shape,
      y_shape=None,
      rowvar=True,
      bias=False,
      ddof=None,
      xp=None,
      dtype=None,
      fweights=None,
      aweights=None,
      name=None,
  ):
      a, y = self.generate_input(a_shape, y_shape, xp, dtype)
      if fweights is not None:
          fweights = name.asarray(fweights)
      if aweights is not None:
          aweights = name.asarray(aweights)
      # print(type(fweights))
      return xp.cov(
          a, y, rowvar, bias, ddof, fweights, aweights, dtype=dtype
      )
  
imports: import unittest
  import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 2 for calling the TestCov obj's underlying member method code with example usage: obj.check(a_shape, y_shape, rowvar, bias, ddof, xp, dtype, fweights, aweights, name) and returns: xp