code: def testInvalidPattern(self, op):
      values = ["abc", "1"]
      with self.cached_session():
          input_vector = constant_op.constant(values, dtypes.string)
          invalid_pattern = "A["
          replace = op(input_vector, invalid_pattern, "x")
          with self.assertRaisesOpError("Invalid pattern"):
              self.evaluate(replace)
  
imports: from absl.testing import parameterized
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import gen_string_ops
  from tensorflow.python.ops import string_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 5 for calling the RegexReplaceOpVariantsTest obj's underlying member method code with example usage: obj.testInvalidPattern(op) without return types