mcs/class/corlib/Test/System.Text/EncoderTest.cs

   1 //
   2 // EncoderTest.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto  <atsushi@ximian.com>
   6 //
   7 // (C) 2006 Novell, Inc.
   8 //
   9 using NUnit.Framework;
  10 using System;
  11 using System.Text;
  12
  13 namespace MonoTests.System.Text
  14 {
  15         [TestFixture]
  16         public class EncoderTest
  17         {
  18                 [Test]
  19                 [ExpectedException (typeof (ArgumentNullException))]
  20                 public void ConvertNullChars ()
  21                 {
  22                         int bytesUsed, charsUsed;
  23                         bool done;
  24                         Encoding.UTF8.GetEncoder ().Convert (
  25                                 null, 0, 100, new byte [100], 0, 100, false,
  26                                 out bytesUsed, out charsUsed, out done);
  27                 }
  28
  29                 [Test]
  30                 [ExpectedException (typeof (ArgumentNullException))]
  31                 public void ConvertNullBytes ()
  32                 {
  33                         int bytesUsed, charsUsed;
  34                         bool done;
  35                         Encoding.UTF8.GetEncoder ().Convert (
  36                                 new char [100], 0, 100, null, 0, 100, false,
  37                                 out bytesUsed, out charsUsed, out done);
  38                 }
  39
  40                 [Test]
  41                 public void ConvertLimitedDestination ()
  42                 {
  43                         byte [] bytes = new byte [10000];
  44                         char [] chars = new char [10000];
  45
  46                         Encoder conv = new ExposedEncoder ();
  47                         int bytesUsed, charsUsed;
  48                         bool done;
  49
  50                         conv.Convert (chars, 0, 10000, bytes, 0, 1000, true,
  51                                       out bytesUsed, out charsUsed, out done);
  52
  53                         Assert.IsFalse (done, "#1");
  54                         Assert.AreEqual (625, bytesUsed, "#2");
  55                         Assert.AreEqual (625, charsUsed, "#3");
  56                 }
  57
  58                 [Test]
  59                 public void ConvertLimitedDestinationUTF8 ()
  60                 {
  61                         byte [] bytes = new byte [10000];
  62                         char [] chars = new char [10000];
  63
  64                         Encoder conv = Encoding.UTF8.GetEncoder ();
  65                         var type = conv.GetType ();
  66                         int bytesUsed, charsUsed;
  67                         bool done;
  68
  69                         conv.Convert (chars, 0, 10000, bytes, 0, 1000, true,
  70                                       out bytesUsed, out charsUsed, out done);
  71
  72                         Assert.IsFalse (done, "#1");
  73                         Assert.AreEqual (1000, bytesUsed, "#2");
  74                         Assert.AreEqual (1000, charsUsed, "#3");
  75                 }
  76
  77                 [Test]
  78                 public void CustomEncodingGetEncoder ()
  79                 {
  80                         var encoding = new CustomEncoding ();
  81                         var encoder = encoding.GetEncoder ();
  82                         Assert.IsNotNull (encoder);
  83                 }
  84
  85                 [Test]
  86                 public void ConvertZeroCharacters ()
  87                 {
  88                         int charsUsed, bytesUsed;
  89                         bool completed;
  90                         byte [] bytes = new byte [0];
  91
  92                         Encoding.UTF8.GetEncoder ().Convert (
  93                                 new char[0], 0, 0, bytes, 0, bytes.Length, true,
  94                                 out charsUsed, out bytesUsed, out completed);
  95
  96                         Assert.IsTrue (completed, "#1");
  97                         Assert.AreEqual (0, charsUsed, "#2");
  98                         Assert.AreEqual (0, bytesUsed, "#3");
  99                 }
 100
 101                 class ExposedEncoder : Encoder {
 102                         public override int GetByteCount (char [] chars, int index, int count, bool flush)
 103                         {
 104                                 return Encoding.UTF8.GetEncoder ().GetByteCount (chars, index, count, flush);
 105                         }
 106
 107                         public override int GetBytes (char [] chars, int charIndex, int charCount, byte [] bytes, int byteIndex, bool flush)
 108                         {
 109                                 return Encoding.UTF8.GetEncoder ().GetBytes (chars, charIndex, charCount, bytes, byteIndex, flush);
 110                         }
 111                 }
 112
 113                 class CustomEncoding : Encoding {
 114
 115                         public override int GetByteCount (char [] chars, int index, int count)
 116                         {
 117                                 throw new NotSupportedException ();
 118                         }
 119
 120                         public override int GetBytes (char [] chars, int charIndex, int charCount, byte [] bytes, int byteIndex)
 121                         {
 122                                 throw new NotSupportedException ();
 123                         }
 124
 125                         public override int GetCharCount (byte [] bytes, int index, int count)
 126                         {
 127                                 throw new NotSupportedException ();
 128                         }
 129
 130                         public override int GetChars (byte [] bytes, int byteIndex, int byteCount, char [] chars, int charIndex)
 131                         {
 132                                 throw new NotSupportedException ();
 133                         }
 134
 135                         public override int GetMaxByteCount (int charCount)
 136                         {
 137                                 throw new NotSupportedException ();
 138                         }
 139
 140                         public override int GetMaxCharCount (int byteCount)
 141                         {
 142                                 throw new NotSupportedException ();
 143                         }
 144                 }
 145         }
 146 }