// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System;
using Microsoft.AspNetCore.Diagnostics.Logging;
using Microsoft.Extensions.DependencyInjection;
using Xunit;
 
namespace Microsoft.AspNetCore.Diagnostics.Latency.Test;
 
public class HttpLatencyTelemetryServiceCollectionExtensionsTests
{
    [Fact]
    public void AddHttpLatencyTelemetry_NullArguments_Throws()
    {
        Assert.Throws<ArgumentNullException>(() =>
            HttpLatencyTelemetryServiceCollectionExtensions.AddHttpLatencyTelemetry(null!));
    }
 
    [Fact]
    public void AddHttpLatencyTelemetry_RegistersEnricher()
    {
        using var serviceProvider = new ServiceCollection()
            .AddHttpLatencyTelemetry()
            .BuildServiceProvider();
 
        var enricher = serviceProvider.GetRequiredService<IHttpLogEnricher>();
 
        Assert.NotNull(enricher);
        Assert.IsType<HttpLatencyLogEnricher>(enricher);
    }
}