code: def testTypePromotion(self):
      x_np = np.ones([1, 2], dtype=np.int16) + np.ones(
          [2, 1], dtype=np.uint8
      )
      x_onp = np.ones([1, 2], dtype=np.int16) + np.ones(
          [2, 1], dtype=np.uint8
      )
      self.assertEqual(x_onp.dtype, x_np.dtype)
      self.assertAllClose(x_onp, x_np)
  
imports: import numpy
  import tensorflow.compat.v2
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops.numpy_ops import np_math_ops
label_desc: Use image node_id 2 for calling the ReadmeTest obj's underlying member method code with example usage: obj.testTypePromotion() without return types