class_docstr: Most tests done in the base class LinearOperatorDerivedClassTest.
class_docstr_tok: ["Most","tests","done","in","the","base","class","LinearOperatorDerivedClassTest","."]
code: def test_negative_num_rows_raises_dynamic(self):
      with self.cached_session():
          n = array_ops.placeholder_with_default(-2, shape=None)
          with self.assertRaisesError("must be non-negative"):
              operator = linalg_lib.LinearOperatorZeros(
                  num_rows=n, assert_proper_shapes=True
              )
              self.evaluate(operator.to_dense())
  
imports: import numpy
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import variables
  from tensorflow.python.ops.linalg import linalg
  from tensorflow.python.ops.linalg import linear_operator_test_util
  from tensorflow.python.platform import test
label_desc: Use image node_id 15 for calling the LinearOperatorZerosTest obj's underlying member method code with example usage: obj.test_negative_num_rows_raises_dynamic() without return types