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

namespace StellaOps.Bench.LinkNotMerge.Tests;

public sealed class BaselineLoaderTests
{
    [Fact]
    public async Task LoadAsync_ReadsEntries()
    {
        var path = Path.GetTempFileName();
        try
        {
            await File.WriteAllTextAsync(
                path,
                "scenario,iterations,observations,aliases,linksets,mean_total_ms,p95_total_ms,max_total_ms,mean_insert_ms,mean_correlation_ms,mean_throughput_per_sec,min_throughput_per_sec,mean_mongo_throughput_per_sec,min_mongo_throughput_per_sec,max_allocated_mb\n" +
                "lnm_ingest_baseline,5,5000,500,450,320.5,340.1,360.9,120.2,210.3,15000.0,13500.0,18000.0,16500.0,96.5\n");

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

            Assert.Equal("lnm_ingest_baseline", entry.Key);
            Assert.Equal(5, entry.Value.Iterations);
            Assert.Equal(5000, entry.Value.Observations);
            Assert.Equal(500, entry.Value.Aliases);
            Assert.Equal(360.9, entry.Value.MaxTotalMs);
            Assert.Equal(16500.0, entry.Value.MinMongoThroughputPerSecond);
            Assert.Equal(96.5, entry.Value.MaxAllocatedMb);
        }
        finally
        {
            File.Delete(path);
        }
    }
}