public void 一文字消費する()
{
var parser = new ItemParser<char>(c => (char)c);
var input = Reader.FromString("abc");
var expected = Success._('a', Reader.FromString("bc"));
Assert.That(parser.Apply(input), Is.EqualTo(expected));
}
public void ItemParserに空を渡すと失敗する()
{
var parser = new ItemParser<char>(c => (char)c);
var input = Reader.FromString("");
var result = parser.Apply(input).Match(
(r, rest) => (string)Util.Fail(),
(m, rest) => m
);
var expected = "input is empty.";
Assert.That(result, Is.EqualTo(expected));
}
