// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using Microsoft.AspNetCore.Connections;
using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Infrastructure;
using Xunit;
 
namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests;
 
public class StringUtilitiesTests
{
    [Theory]
    [InlineData(uint.MinValue)]
    [InlineData(0xF)]
    [InlineData(0xA)]
    [InlineData(0xFF)]
    [InlineData(0xFFC59)]
    [InlineData(uint.MaxValue)]
    public void ConvertsToHex(uint value)
    {
        var str = CorrelationIdGenerator.GetNextId();
        Assert.Equal($"{str}:{value:X8}", StringUtilities.ConcatAsHexSuffix(str, ':', value));
    }
 
    [Fact]
    public void HandlesNull()
    {
        uint value = 0x23BC0234;
        Assert.Equal(":23BC0234", StringUtilities.ConcatAsHexSuffix(null, ':', value));
    }
}