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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Collections.Generic;
using System.Linq;
using System.Net.Http.Formatting.DataSets;
using System.Text;
using Microsoft.TestCommon;
using Xunit;
using Xunit.Extensions;
using Assert = Microsoft.TestCommon.AssertEx;
namespace System.Net.Http.Formatting.Parsers
{
public class HttpResponseHeaderParserTests
{
[Fact]
[Trait("Description", "HttpResponseHeaderParser is internal class")]
public void TypeIsCorrect()
{
Assert.Type.HasProperties<HttpResponseHeaderParser>(TypeAssert.TypeProperties.IsClass);
}
private static byte[] CreateBuffer(string version, string statusCode, string reasonPhrase, Dictionary<string, string> headers)
{
const string SP = " ";
const string CRLF = "\r\n";
string lws = SP;
StringBuilder response = new StringBuilder();
response.AppendFormat("{0}{1}{2}{3}{4}{5}", version, lws, statusCode, lws, reasonPhrase, CRLF);
if (headers != null)
{
foreach (var h in headers)
{
response.AppendFormat("{0}: {1}{2}", h.Key, h.Value, CRLF);
}
}
response.Append(CRLF);
return Encoding.UTF8.GetBytes(response.ToString());
}
private static ParserState ParseBufferInSteps(HttpResponseHeaderParser parser, byte[] buffer, int readsize, out int totalBytesConsumed)
{
ParserState state = ParserState.Invalid;
totalBytesConsumed = 0;
while (totalBytesConsumed <= buffer.Length)
{
int size = Math.Min(buffer.Length - totalBytesConsumed, readsize);
byte[] parseBuffer = new byte[size];
Buffer.BlockCopy(buffer, totalBytesConsumed, parseBuffer, 0, size);
int bytesConsumed = 0;
state = parser.ParseBuffer(parseBuffer, parseBuffer.Length, ref bytesConsumed);
totalBytesConsumed += bytesConsumed;
if (state != ParserState.NeedMoreData)
{
return state;
}
}
return state;
}
private static void ValidateResult(
HttpUnsortedResponse statusLine,
Version version,
HttpStatusCode statusCode,
string reasonPhrase,
Dictionary<string, string> headers)
{
Assert.Equal(version, statusLine.Version);
Assert.Equal(statusCode, statusLine.StatusCode);
Assert.Equal(reasonPhrase, statusLine.ReasonPhrase);
if (headers != null)
{
Assert.Equal(headers.Count, statusLine.HttpHeaders.Count());
foreach (var header in headers)
{
Assert.True(statusLine.HttpHeaders.Contains(header.Key), "Parsed header did not contain expected key " + header.Key);
Assert.Equal(header.Value, statusLine.HttpHeaders.GetValues(header.Key).ElementAt(0));
}
}
}
[Fact]
[Trait("Description", "HttpResponseHeaderParser constructor throws on invalid arguments")]
public void HttpResponseHeaderParserConstructorTest()
{
HttpUnsortedResponse result = new HttpUnsortedResponse();
Assert.NotNull(result);
Assert.ThrowsArgumentGreaterThanOrEqualTo(() => new HttpResponseHeaderParser(result, ParserData.MinStatusLineSize - 1, ParserData.MinHeaderSize),
"maxStatusLineSize", ParserData.MinStatusLineSize.ToString(), ParserData.MinStatusLineSize - 1);
Assert.ThrowsArgumentGreaterThanOrEqualTo(() => new HttpResponseHeaderParser(result, ParserData.MinStatusLineSize, ParserData.MinHeaderSize - 1),
"maxHeaderSize", ParserData.MinHeaderSize.ToString(), ParserData.MinHeaderSize - 1);
HttpResponseHeaderParser parser = new HttpResponseHeaderParser(result, ParserData.MinStatusLineSize, ParserData.MinHeaderSize);
Assert.NotNull(parser);
Assert.ThrowsArgumentNull(() => { new HttpResponseHeaderParser(null); }, "httpResponse");
}
[Fact]
[Trait("Description", "HttpResponseHeaderParser.ParseBuffer throws on null buffer.")]
public void ResponseHeaderParserNullBuffer()
{
HttpUnsortedResponse result = new HttpUnsortedResponse();
HttpResponseHeaderParser parser = new HttpResponseHeaderParser(result, ParserData.MinStatusLineSize, ParserData.MinHeaderSize);
Assert.NotNull(parser);
int bytesConsumed = 0;
Assert.ThrowsArgumentNull(() => { parser.ParseBuffer(null, 0, ref bytesConsumed); }, "buffer");
}
[Fact]
[Trait("Description", "HttpResponseHeaderParser.ParseBuffer parses minimum statusLine.")]
public void ResponseHeaderParserMinimumBuffer()
{
byte[] data = CreateBuffer("HTTP/1.1", "200", "", null);
HttpUnsortedResponse result = new HttpUnsortedResponse();
HttpResponseHeaderParser parser = new HttpResponseHeaderParser(result, ParserData.MinStatusLineSize, ParserData.MinHeaderSize);
Assert.NotNull(parser);
int bytesConsumed = 0;
ParserState state = parser.ParseBuffer(data, data.Length, ref bytesConsumed);
Assert.Equal(ParserState.Done, state);
Assert.Equal(data.Length, bytesConsumed);
ValidateResult(result, new Version("1.1"), HttpStatusCode.OK, "", null);
}
[Fact]
[Trait("Description", "HttpResponseHeaderParser.ParseBuffer parses standard status codes.")]
public void ResponseHeaderParserAcceptsStandardStatusCodes()
{
foreach (HttpStatusCode status in HttpUnitTestDataSets.AllHttpStatusCodes)
{
byte[] data = CreateBuffer("HTTP/1.1", ((int)status).ToString(), "Reason", ParserData.ValidHeaders);
for (var cnt = 1; cnt <= data.Length; cnt++)
{
HttpUnsortedResponse result = new HttpUnsortedResponse();
HttpResponseHeaderParser parser = new HttpResponseHeaderParser(result);
Assert.NotNull(parser);
int totalBytesConsumed = 0;
ParserState state = ParseBufferInSteps(parser, data, cnt, out totalBytesConsumed);
Assert.Equal(ParserState.Done, state);
Assert.Equal(data.Length, totalBytesConsumed);
ValidateResult(result, new Version("1.1"), status, "Reason", ParserData.ValidHeaders);
}
}
}
[Fact]
[Trait("Description", "HttpResponseHeaderParser.ParseBuffer parses custom status codes.")]
public void ResponseHeaderParserAcceptsCustomStatusCodes()
{
foreach (HttpStatusCode status in HttpUnitTestDataSets.CustomHttpStatusCodes)
{
byte[] data = CreateBuffer("HTTP/1.1", ((int)status).ToString(), "Reason", ParserData.ValidHeaders);
for (var cnt = 1; cnt <= data.Length; cnt++)
{
HttpUnsortedResponse result = new HttpUnsortedResponse();
HttpResponseHeaderParser parser = new HttpResponseHeaderParser(result);
Assert.NotNull(parser);
int totalBytesConsumed = 0;
ParserState state = ParseBufferInSteps(parser, data, cnt, out totalBytesConsumed);
Assert.Equal(ParserState.Done, state);
Assert.Equal(data.Length, totalBytesConsumed);
ValidateResult(result, new Version("1.1"), status, "Reason", ParserData.ValidHeaders);
}
}
}
[Fact]
[Trait("Description", "HttpResponseHeaderParser.ParseBuffer rejects invalid status codes")]
public void ResponseHeaderParserRejectsInvalidStatusCodes()
{
foreach (string invalidStatus in ParserData.InvalidStatusCodes)
{
byte[] data = CreateBuffer("HTTP/1.1", invalidStatus, "Reason", ParserData.ValidHeaders);
for (var cnt = 1; cnt <= data.Length; cnt++)
{
HttpUnsortedResponse result = new HttpUnsortedResponse();
HttpResponseHeaderParser parser = new HttpResponseHeaderParser(result);
Assert.NotNull(parser);
int totalBytesConsumed = 0;
ParserState state = ParseBufferInSteps(parser, data, cnt, out totalBytesConsumed);
Assert.Equal(ParserState.Invalid, state);
}
}
}
[Fact]
[Trait("Description", "HttpResponseHeaderParser.ParseBuffer rejects invalid reason phrase.")]
public void ResponseHeaderParserRejectsInvalidReasonPhrase()
{
foreach (string invalidReason in ParserData.InvalidReasonPhrases)
{
byte[] data = CreateBuffer("HTTP/1.1", "200", invalidReason, ParserData.ValidHeaders);
for (var cnt = 1; cnt <= data.Length; cnt++)
{
HttpUnsortedResponse result = new HttpUnsortedResponse();
HttpResponseHeaderParser parser = new HttpResponseHeaderParser(result);
Assert.NotNull(parser);
int totalBytesConsumed = 0;
ParserState state = ParseBufferInSteps(parser, data, cnt, out totalBytesConsumed);
Assert.Equal(ParserState.Invalid, state);
}
}
}
public static IEnumerable<object[]> Versions
{
get { return ParserData.Versions; }
}
[Theory]
[PropertyData("Versions")]
[Trait("Description", "HttpResponseHeaderParser.ParseBuffer accepts valid versions.")]
public void ResponseHeaderParserAcceptsValidVersion(Version version)
{
byte[] data = CreateBuffer(String.Format("HTTP/{0}", version.ToString(2)), "200", "Reason", ParserData.ValidHeaders);
for (var cnt = 1; cnt <= data.Length; cnt++)
{
HttpUnsortedResponse result = new HttpUnsortedResponse();
HttpResponseHeaderParser parser = new HttpResponseHeaderParser(result);
Assert.NotNull(parser);
int totalBytesConsumed = 0;
ParserState state = ParseBufferInSteps(parser, data, cnt, out totalBytesConsumed);
Assert.Equal(data.Length, totalBytesConsumed);
ValidateResult(result, version, HttpStatusCode.OK, "Reason", ParserData.ValidHeaders);
}
}
public static IEnumerable<object[]> InvalidVersions
{
get { return ParserData.InvalidVersions; }
}
[Theory]
[PropertyData("InvalidVersions")]
[Trait("Description", "HttpResponseHeaderParser.ParseBuffer rejects invalid protocol version.")]
public void ResponseHeaderParserRejectsInvalidVersion(string invalid)
{
byte[] data = CreateBuffer(invalid, "200", "Reason", ParserData.ValidHeaders);
for (var cnt = 1; cnt <= data.Length; cnt++)
{
HttpUnsortedResponse result = new HttpUnsortedResponse();
HttpResponseHeaderParser parser = new HttpResponseHeaderParser(result);
Assert.NotNull(parser);
int totalBytesConsumed = 0;
ParserState state = ParseBufferInSteps(parser, data, cnt, out totalBytesConsumed);
Assert.Equal(ParserState.Invalid, state);
}
}
}
}
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