code: def testEmpty(self):
      self._verifySolve(
          np.empty([0, 2, 2]), np.empty([0, 2, 2]), lower=True
      )
      self._verifySolve(
          np.empty([2, 0, 0]), np.empty([2, 0, 0]), lower=True
      )
      self._verifySolve(
          np.empty([2, 0, 0]), np.empty([2, 0, 0]), lower=False
      )
      self._verifySolve(
          np.empty([2, 0, 0]),
          np.empty([2, 0, 0]),
          lower=True,
          batch_dims=[3, 2],
      )
      self._verifySolve(np.empty([0, 0]), np.empty([0, 0]), lower=True)
  
imports: import numpy
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import linalg_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 14 for calling the MatrixTriangularSolveOpTest obj's underlying member method code with example usage: obj.testEmpty() without return types