GmRelayBot/tests/GmRelay.Bot.Tests/Discord/DiscordNewSessionHandlerTests.cs

using GmRelay.DiscordBot.Features.Sessions;

namespace GmRelay.Bot.Tests.Discord;

public sealed class DiscordNewSessionHandlerTests
{
    [Fact]
    public void ParseTimeInput_ShouldParseDiscordDateFormat()
    {
        var result = DiscordNewSessionHandler.ParseTimeInput("2026-05-20 19:30");
        Assert.True(result.IsSuccess);
        Assert.Equal(2026, result.Value.Year);
        Assert.Equal(5, result.Value.Month);
        Assert.Equal(20, result.Value.Day);
        Assert.Equal(19, result.Value.Hour);
        Assert.Equal(30, result.Value.Minute);
    }

    [Fact]
    public void ParseTimeInput_ShouldRejectPastDate()
    {
        var result = DiscordNewSessionHandler.ParseTimeInput("2020-01-01 00:00");
        Assert.False(result.IsSuccess);
    }

    [Fact]
    public void ParseTimeInput_ShouldParseRussianDateFormat()
    {
        var result = DiscordNewSessionHandler.ParseTimeInput("20.05.2026 19:30");
        Assert.True(result.IsSuccess);
        Assert.Equal(2026, result.Value.Year);
        Assert.Equal(5, result.Value.Month);
        Assert.Equal(20, result.Value.Day);
    }

    [Fact]
    public void ParseTimeInput_ShouldRejectInvalidFormat()
    {
        var result = DiscordNewSessionHandler.ParseTimeInput("not-a-date");
        Assert.False(result.IsSuccess);
        Assert.NotNull(result.Error);
    }
}