code: def testBasicNotActuallyTriangular(self):
      rng = np.random.RandomState(0)
      a = rng.randn(5, 5)  # the `a` matrix is not lower-triangular
      b = rng.randn(5, 7)
      for dtype in self.float_types:
          self._VerifyTriangularSolveCombo(
              a.astype(dtype), b.astype(dtype)
          )
  
imports: import itertools
  import numpy
  from tensorflow.compiler.tests import xla_test
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  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 7 for calling the MatrixTriangularSolveOpTest obj's underlying member method code with example usage: obj.testBasicNotActuallyTriangular() without return types