// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

using System;
using System.Linq;
using System.Text;
using Microsoft.AspNetCore.Server.Kestrel;
using Microsoft.AspNetCore.Server.Kestrel.Http;
using Microsoft.AspNetCore.Server.Kestrel.Infrastructure;
using Xunit;

namespace Microsoft.AspNetCore.Server.KestrelTests
{
    public class FrameTests
    {
        [Theory]
        [InlineData("Cookie: \r\n\r\n", 1)]
        [InlineData("Cookie:\r\n\r\n", 1)]
        [InlineData("Cookie:\r\n value\r\n\r\n", 1)]
        [InlineData("Cookie\r\n", 0)]
        [InlineData("Cookie: \r\nConnection: close\r\n\r\n", 2)]
        [InlineData("Connection: close\r\nCookie: \r\n\r\n", 2)]
        [InlineData("Connection: close\r\nCookie \r\n", 1)]
        [InlineData("Connection:\r\n \r\nCookie \r\n", 1)]
        public void EmptyHeaderValuesCanBeParsed(string rawHeaders, int numHeaders)
        {
            var trace = new KestrelTrace(new TestKestrelTrace());
            var ltp = new LoggingThreadPool(trace);
            var socketInput = new SocketInput(new MemoryPool2(), ltp);
            var headerCollection = new FrameRequestHeaders();

            var headerArray = Encoding.ASCII.GetBytes(rawHeaders);
            socketInput.IncomingData(headerArray, 0, headerArray.Length);

            var success = Frame.TakeMessageHeaders(socketInput, headerCollection);

            Assert.True(success);
            Assert.Equal(numHeaders, headerCollection.Count());

            // Assert TakeMessageHeaders consumed all the input
            var scan = socketInput.ConsumingStart();
            Assert.True(scan.IsEnd);
        }
    }
}