code: def testQR(self, rows, cols, dtype):
      for full_matrices in [True, False]:
          # Only tests the (3, 2) case for small numbers of rows/columns.
          for batch_dims in [(), (3,)] + [(3, 2)] * (
              max(rows, cols) < 10
          ):
              x_np = self._random_matrix(
                  dtype, batch_dims + (rows, cols)
              )
              self._test(x_np, full_matrices)
  
imports: import itertools
  import unittest
  from absl.testing import parameterized
  import numpy
  from tensorflow.compiler.tests import xla_test
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import linalg_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 7 for calling the QrOpTest obj's underlying member method code with example usage: obj.testQR(rows, cols, dtype) without return types