using System.IO;
using System.Threading;
using System.Threading.Tasks;
using StellaOps.Bench.Notify.Baseline;
using Xunit;

namespace StellaOps.Bench.Notify.Tests;

public sealed class BaselineLoaderTests
{
    [Fact]
    public async Task LoadAsync_ReadsBaselineEntries()
    {
        var path = Path.GetTempFileName();
        try
        {
            await File.WriteAllTextAsync(
                path,
                "scenario,iterations,events,deliveries,mean_ms,p95_ms,max_ms,mean_throughput_per_sec,min_throughput_per_sec,max_allocated_mb\n" +
                "notify_dispatch_density_05,5,5000,25000,120.5,150.1,199.9,42000.5,39000.2,85.7\n");

            var entries = await BaselineLoader.LoadAsync(path, CancellationToken.None);
            var entry = Assert.Single(entries);

            Assert.Equal("notify_dispatch_density_05", entry.Key);
            Assert.Equal(5, entry.Value.Iterations);
            Assert.Equal(5000, entry.Value.EventCount);
            Assert.Equal(25000, entry.Value.DeliveryCount);
            Assert.Equal(120.5, entry.Value.MeanMs);
            Assert.Equal(39000.2, entry.Value.MinThroughputPerSecond);
            Assert.Equal(85.7, entry.Value.MaxAllocatedMb);
        }
        finally
        {
            File.Delete(path);
        }
    }
}