using GeoVLog.Core.Parsers;
using System;
using System.Text;
using Xunit;

namespace GeoVLog.Tests.Parsers;

public class MagParserTests
{
    [Fact]
    [Trait("Category", "Core")]
    public void ParsesValidLine()
    {
        var msg = Encoding.ASCII.GetBytes("$ 30614.050,1521");
        var ts = new DateTime(2025, 1, 1, 0, 0, 0, DateTimeKind.Utc);

        var ok = MagParser.TryParse(msg, ts, out var parsed);

        Assert.True(ok);
        Assert.Equal(ts, parsed.TimestampUtc);
        Assert.Equal(30614.050, parsed.MagneticFieldNT!.Value, 3);
        Assert.Equal(1521, parsed.SignalLevel!.Value);
    }

    [Fact]
    [Trait("Category", "Core")]
    public void RejectsMissingDollar()
    {
        var msg = Encoding.ASCII.GetBytes("30614.050,1521");
        Assert.False(MagParser.TryParse(msg, DateTime.UtcNow, out _));
    }
}