ircsharp/IRCSharp.Tests/Tokenization/StatefulEncoder.cs

namespace IRCSharp.Tests.Tokenization;

[TestClass]
public class StatefulEncoder
{
    private IRCTokens.StatefulEncoder _encoder;

    [TestInitialize]
    public void Initialize()
    {
        _encoder = new();
    }

    [TestMethod]
    public void Push()
    {
        var line = new Line("PRIVMSG #channel hello");
        _encoder.Push(line);
        Assert.AreEqual("PRIVMSG #channel hello\r\n", _encoder.Pending());
    }

    [TestMethod]
    public void PopPartial()
    {
        var line = new Line("PRIVMSG #channel hello");
        _encoder.Push(line);
        _encoder.Pop("PRIVMSG #channel hello".Length);
        Assert.AreEqual("\r\n", _encoder.Pending());
    }

    [TestMethod]
    public void TestPopReturned()
    {
        var line = new Line("PRIVMSG #channel hello");
        _encoder.Push(line);
        _encoder.Push(line);
        var lines = _encoder.Pop("PRIVMSG #channel hello\r\n".Length);
        Assert.AreEqual(1, lines.Count);
        Assert.AreEqual(line, lines[0]);
    }

    [TestMethod]
    public void PopNoneReturned()
    {
        var line = new Line("PRIVMSG #channel hello");
        _encoder.Push(line);
        var lines = _encoder.Pop(1);
        Assert.AreEqual(0, lines.Count);
    }

    [TestMethod]
    public void PopMultipleLines()
    {
        var line1 = new Line("PRIVMSG #channel1 hello");
        _encoder.Push(line1);
        var line2 = new Line("PRIVMSG #channel2 hello");
        _encoder.Push(line2);

        var lines = _encoder.Pop(_encoder.Pending().Length);
        Assert.AreEqual(2, lines.Count);
        Assert.AreEqual(string.Empty, _encoder.Pending());
    }

    [TestMethod]
    public void Clear()
    {
        _encoder.Push(new("PRIVMSG #channel hello"));
        _encoder.Clear();
        Assert.AreEqual(string.Empty, _encoder.Pending());
    }

    [TestMethod]
    public void EncodingIso8859()
    {
        var iso8859 = Encoding.GetEncoding("iso-8859-1");
        _encoder = new() {Encoding = iso8859};
        _encoder.Push(new("PRIVMSG #channel :hello Ç"));
        CollectionAssert.AreEqual(iso8859.GetBytes("PRIVMSG #channel :hello Ç\r\n"), _encoder.PendingBytes);
    }
}