code: def testMergeNoOptions(self):
      with self.assertRaisesRegex(
          ValueError, "At least one options should be provided"
      ):
          options.merge_options()
  
imports: from absl.testing import parameterized
  from tensorflow.python.data.kernel_tests import test_base
  from tensorflow.python.data.util import options
  from tensorflow.python.framework import combinations
  from tensorflow.python.platform import test
label_desc: Use image node_id 7 for calling the OptionsTest obj's underlying member method code with example usage: obj.testMergeNoOptions() without return types