public void Optional()
{
StringAutomaton automaton = StringAutomaton.Constant(1.0, DiscreteChar.Lower());
StringTransducer copy = StringTransducer.Copy(automaton);
StringTransducer copyOptional = StringTransducer.Optional(copy);
StringInferenceTestUtilities.TestTransducerValue(copy, "abc", "abc", 1.0);
StringInferenceTestUtilities.TestTransducerValue(copyOptional, "abc", "abc", 1.0);
StringInferenceTestUtilities.TestTransducerValue(copy, string.Empty, string.Empty, 1.0);
StringInferenceTestUtilities.TestTransducerValue(copyOptional, string.Empty, string.Empty, 2.0);
StringInferenceTestUtilities.TestTransducerValue(copy, "abc", "ab", 0.0);
StringInferenceTestUtilities.TestTransducerValue(copyOptional, "abc", "ab", 0.0);
StringInferenceTestUtilities.TestTransducerValue(copy, "abc", string.Empty, 0.0);
StringInferenceTestUtilities.TestTransducerValue(copyOptional, "abc", string.Empty, 0.0);
}
