OpenTween.Tests/Connection/LazyJsonTest.cs

   1 // OpenTween - Client of Twitter
   2 // Copyright (c) 2016 kim_upsilon (@kim_upsilon) <https://upsilo.net/~upsilon/>
   3 // All rights reserved.
   4 //
   5 // This file is part of OpenTween.
   6 //
   7 // This program is free software; you can redistribute it and/or modify it
   8 // under the terms of the GNU General Public License as published by the Free
   9 // Software Foundation; either version 3 of the License, or (at your option)
  10 // any later version.
  11 //
  12 // This program is distributed in the hope that it will be useful, but
  13 // WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  15 // for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License along
  18 // with this program. If not, see <http://www.gnu.org/licenses/>, or write to
  19 // the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
  20 // Boston, MA 02110-1301, USA.
  21
  22 using System;
  23 using System.Collections.Generic;
  24 using System.IO;
  25 using System.Linq;
  26 using System.Net.Http;
  27 using System.Runtime.Serialization;
  28 using System.Text;
  29 using System.Threading.Tasks;
  30 using OpenTween.Api;
  31 using Xunit;
  32
  33 namespace OpenTween.Connection
  34 {
  35     public class LazyJsonTest
  36     {
  37         [Fact]
  38         public async Task LoadJsonAsync_Test()
  39         {
  40             var body = Encoding.UTF8.GetBytes("\"hogehoge\"");
  41             using (var bodyStream = new MemoryStream(body))
  42             using (var response = new HttpResponseMessage())
  43             {
  44                 response.Content = new StreamContent(bodyStream);
  45
  46                 using (var lazyJson = new LazyJson<string>(response))
  47                 {
  48                     // この時点ではまだレスポンスボディは読まれない
  49                     Assert.Equal(0, bodyStream.Position);
  50
  51                     var result = await lazyJson.LoadJsonAsync()
  52                         .ConfigureAwait(false);
  53
  54                     Assert.Equal("hogehoge", result);
  55                 }
  56             }
  57         }
  58
  59         [Fact]
  60         public async Task LoadJsonAsync_InvalidJsonTest()
  61         {
  62             var body = Encoding.UTF8.GetBytes("### Invalid JSON ###");
  63             using (var bodyStream = new MemoryStream(body))
  64             using (var response = new HttpResponseMessage())
  65             {
  66                 response.Content = new StreamContent(bodyStream);
  67
  68                 using (var lazyJson = new LazyJson<string>(response))
  69                 {
  70                     // この時点ではまだレスポンスボディは読まれない
  71                     Assert.Equal(0, bodyStream.Position);
  72
  73                     var exception = await Assert.ThrowsAnyAsync<WebApiException>(() => lazyJson.LoadJsonAsync())
  74                         .ConfigureAwait(false);
  75
  76                     Assert.IsType<SerializationException>(exception.InnerException);
  77                 }
  78             }
  79         }
  80
  81         [Fact]
  82         public async Task IgnoreResponse_Test()
  83         {
  84             using (var bodyStream = new InvalidStream())
  85             using (var response = new HttpResponseMessage())
  86             {
  87                 // IgnoreResponse() によってレスポンスの Stream が読まれずに破棄されることをテストするため、
  88                 // 読み込みが行われると IOException が発生する InvalidStream クラスを bodyStream に使用している
  89                 response.Content = new StreamContent(bodyStream);
  90
  91                 using (var lazyJson = new LazyJson<string>(response))
  92                 {
  93                     // レスポンスボディを読まずに破棄
  94                     await Task.FromResult(lazyJson)
  95                         .IgnoreResponse()
  96                         .ConfigureAwait(false);
  97
  98                     Assert.True(bodyStream.IsDisposed);
  99                 }
 100             }
 101         }
 102
 103         class InvalidStream : Stream
 104         {
 105             public bool IsDisposed { get; private set; } = false;
 106
 107             public override bool CanRead => true;
 108             public override bool CanSeek => false;
 109             public override bool CanWrite => false;
 110             public override long Length => 100L;
 111             public override long Position
 112             {
 113                 get { return 0L; }
 114                 set { throw new NotSupportedException(); }
 115             }
 116
 117             public override void Flush()
 118             {
 119                 throw new NotSupportedException();
 120             }
 121
 122             public override int Read(byte[] buffer, int offset, int count)
 123             {
 124                 throw new IOException();
 125             }
 126
 127             public override long Seek(long offset, SeekOrigin origin)
 128             {
 129                 throw new NotSupportedException();
 130             }
 131
 132             public override void SetLength(long value)
 133             {
 134                 throw new NotSupportedException();
 135             }
 136
 137             public override void Write(byte[] buffer, int offset, int count)
 138             {
 139                 throw new NotSupportedException();
 140             }
 141
 142             protected override void Dispose(bool disposing)
 143             {
 144                 base.Dispose(disposing);
 145                 this.IsDisposed = true;
 146             }
 147         }
 148     }
 149 }