mcs/class/corlib/Test/System.IO/TextWriterTest.cs

   1 //
   2 // TextWriterTest.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto <atsushi@ximian.com>
   6 //
   7 // Copyright (C) 2004 Novell (http://www.novell.com)
   8 //
   9
  10 using System;
  11 using System.Globalization;
  12 using System.IO;
  13 using System.Text;
  14 using NUnit.Framework;
  15
  16 namespace MonoTests.System.IO
  17 {
  18         [TestFixture]
  19         public class TextWriterTest : Assertion
  20         {
  21                 class MyTextWriter : TextWriter
  22                 {
  23                         public override Encoding Encoding { get { return Encoding.Default; } }
  24
  25                         internal MyTextWriter ()
  26                                 : base (CultureInfo.InvariantCulture)
  27                         {
  28                         }
  29
  30                         public void UpdateLine ()
  31                         {
  32                                 CoreNewLine = new char [] {'Z'};
  33                         }
  34
  35                         public void UpdateLine2 ()
  36                         {
  37                                 CoreNewLine [0] = 'Y';
  38                         }
  39                 }
  40
  41                 [Test]
  42                 public void CoreNewLine ()
  43                 {
  44                         MyTextWriter w = new MyTextWriter ();
  45                         AssertNotNull (w.NewLine);
  46
  47                         w.UpdateLine ();
  48                         AssertEquals ('Z', w.NewLine [0]);
  49
  50                         w.UpdateLine2 ();
  51                         AssertEquals ('Y', w.NewLine [0]);
  52                 }
  53
  54                 class ArrayOrCharTester : TextWriter {
  55                         public bool called_array;
  56                         public override Encoding Encoding { get { return Encoding.UTF8; }}
  57
  58                         public override void Write (char [] x, int a, int b)
  59                         {
  60                                 called_array = true;
  61                         }
  62                         public override void Write (char c)
  63                         {
  64                         }
  65                 }
  66
  67                 [Test]
  68                 public void TestCharArrayCallsArrayIntInt ()
  69                 {
  70                         ArrayOrCharTester x = new ArrayOrCharTester ();
  71                         x.Write (new char [] {'a','b','c'});
  72                         AssertEquals (true, x.called_array);
  73                 }
  74         }
  75 }