CanonSharp/CanonSharp.Tests/CombinatorsTests/LinqTests.cs

using CanonSharp.Combinator.Abstractions;
using CanonSharp.Combinator.Extensions;
using static CanonSharp.Combinator.Text.TextParserBuilder;
using CanonSharp.Tests.Utils;

namespace CanonSharp.Tests.CombinatorsTests;

public class LinqTests : ParserTestsBase
{
    [Fact]
    public void SelectTest1()
    {
        IParser<char, string> parser = from token in Char('a')
            select token.ToString();
        ValidateSuccessfulResult(parser, "a", "a");
        ValidateFailedResult(parser, "b");
    }

    [Fact]
    public void SelectManyTest1()
    {
        IParser<char, int> parser = from _1 in Char('a')
            from _2 in Char('b')
            from _3 in Char('c')
            select 123;
        ValidateSuccessfulResult(parser, 123, "abc");
        ValidateFailedResult(parser, "asd");
    }
}