1 //
2 // EncoderReplacementFallbackBuffer.cs
3 //
4 // Author:
5 //	Atsushi Enomoto  <atsushi@ximian.com> <atsushi@xamarin.com>
6 //
7 // Copyright (C) 2005 Novell, Inc.  http://www.novell.com
8 // Copyright (C) 2011 Xamain, Inc.  http://xamarin.com
9 // Copyright 2011 Xamarin Inc (http://www.xamarin.com).
10 //
11 
12 
13 using System;
14 using System.IO;
15 using System.Text;
16 using NUnit.Framework;
17 
18 using Buffer = System.Text.EncoderReplacementFallbackBuffer;
19 
20 namespace MonoTests.System.Text
21 {
22 	[TestFixture]
23 	public class EncoderReplacementFallbackBufferTest
24 	{
NewInstance()25 		private Buffer NewInstance ()
26 		{
27 			return new Buffer (new EncoderReplacementFallback ());
28 		}
29 
30 		[Test]
FallbackEmptyDefault()31 		public void FallbackEmptyDefault ()
32 		{
33 			Buffer b = NewInstance ();
34 			Assert.IsTrue (b.Fallback ('X', 0), "#0");
35 			Assert.IsFalse (b.MovePrevious (), "#1");
36 			Assert.AreEqual (1, b.Remaining, "#2");
37 			Assert.AreEqual ('?', b.GetNextChar (), "#3");
38 			Assert.AreEqual (0, b.Remaining, "#4");
39 			// the string is already consumed.
40 			Assert.AreEqual (char.MinValue, b.GetNextChar (), "#5");
41 		}
42 
43 		[Test]
FallbackEmptyForEncodingUTF8()44 		public void FallbackEmptyForEncodingUTF8 ()
45 		{
46 			Buffer b = Encoding.UTF8.EncoderFallback.CreateFallbackBuffer () as Buffer;
47 			Assert.IsTrue (b.Fallback ('X', 0), "#1");
48 			Assert.IsFalse (b.MovePrevious (), "#2");
49 			Assert.AreEqual (1, b.Remaining, "#3");
50 			// the string does not exist.
51 			Assert.AreEqual ('\uFFFD', b.GetNextChar (), "#4");
52 		}
53 
54 		[Test]
FallbackSequential()55 		public void FallbackSequential ()
56 		{
57 			Buffer b = NewInstance ();
58 			b.Fallback ('X', 0);
59 			b.GetNextChar ();
60 			b.Fallback ('X', 0);
61 		}
62 
63 		[Test]
64 		[ExpectedException (typeof (ArgumentException))]
FallbackRecursiveError()65 		public void FallbackRecursiveError ()
66 		{
67 			Buffer b = NewInstance ();
68 			b.Fallback ('X', 0);
69 			b.Fallback ('X', 0);
70 		}
71 
72 		[Test]
73 		[Category ("NotWorking")]
Iterate()74 		public void Iterate ()
75 		{
76 			Assert.AreEqual ('\0', Encoding.UTF8.EncoderFallback
77 				.CreateFallbackBuffer ().GetNextChar (), "#1");
78 
79 			Buffer b = NewInstance ();
80 //			Assert.AreEqual (1, b.Remaining, "#2");
81 //			Assert.AreEqual ('?', b.GetNextChar (), "#3");
82 			Assert.AreEqual (0, b.Remaining, "#4");
83 			Assert.AreEqual ('\0', b.GetNextChar (), "#5");
84 //			Assert.IsTrue (b.MovePrevious (), "#6");
85 //			Assert.AreEqual (1, b.Remaining, "#7");
86 			Assert.IsFalse (b.MovePrevious (), "#8");
87 //			Assert.AreEqual ('?', b.GetNextChar (), "#9");
88 		}
89 
90 		[Test]
Reset()91 		public void Reset ()
92 		{
93 			// Xamarin bug #545
94 			Encoding.UTF8.GetBytes ("\uDE7E\uDE7E");
95 		}
96 	}
97 }
98 
99 
100