public void union_parser_with_failing_left_side_and_failing_right_side_fails()
{
var subject = new Union(__wally__, __dr_jones__);
var result = subject.TryMatch(scanner);
Assert.That(result.Success, Is.False);
}
public void union_parser_with_passing_left_and_passing_right_side_passes_using_longest_match()
{
var subject = new Union(__this__, __this_is__);
var result = subject.TryMatch(scanner);
Assert.That(result.Success, Is.True);
Assert.That(result.Value, Is.EqualTo("this is"));
}
public void uses_parse_method_of_child_parsers()
{
var parser = Substitute.For<IMatchingParser>();
parser.TryMatch(scanner).Returns(scanner.NoMatch);
parser.Parse(scanner).Returns(scanner.NoMatch);
var subject = new Union(parser, parser);
subject.TryMatch(scanner);
parser.Received().Parse(scanner);
parser.DidNotReceive().TryMatch(scanner);
}