// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Text;
using Microsoft.AspNetCore.Http;
using Xunit;
 
namespace Microsoft.AspNetCore.Server.Kestrel.Core.Tests;
 
public class ReasonPhraseTests
{
    [Theory]
    [InlineData(999, "Unknown", "999 Unknown")]
    [InlineData(999, null, "999 ")]
    [InlineData(StatusCodes.Status200OK, "OK", "200 OK")]
    [InlineData(StatusCodes.Status200OK, null, "200 OK")]
    [InlineData(StatusCodes.Status200OK, "Custom OK", "200 Custom OK")]
    public void Formatting(int statusCode, string reasonPhrase, string expectedResult)
    {
        var bytes = Internal.Http.ReasonPhrases.ToStatusBytes(statusCode, reasonPhrase);
        Assert.NotNull(bytes);
        Assert.Equal(expectedResult, Encoding.ASCII.GetString(bytes));
    }
 
    [Fact]
    public void CachesKnownPhrases()
    {
        for (var statusCode = 1; statusCode < 1000; statusCode++)
        {
            var reasonPhrase = WebUtilities.ReasonPhrases.GetReasonPhrase(statusCode);
 
            if (!string.IsNullOrEmpty(reasonPhrase))
            {
                var bytes = Internal.Http.ReasonPhrases.ToStatusBytes(statusCode, reasonPhrase);
                var bytesCached = Internal.Http.ReasonPhrases.ToStatusBytes(statusCode);
 
                Assert.Same(bytes, bytesCached);
                Assert.EndsWith(reasonPhrase, Encoding.ASCII.GetString(bytes));
            }
        }
    }
}