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//
// DecoderReplacementFallback.cs
//
// Author:
// Atsushi Enomoto <atsushi@ximian.com>
//
// Copyright (C) 2005 Novell, Inc. http://www.novell.com
//
#if NET_2_0
using System;
using System.IO;
using System.Text;
using NUnit.Framework;
namespace MonoTests.System.Text
{
[TestFixture]
public class DecoderReplacementFallbackTest
{
[Test]
public void Defaults ()
{
DecoderReplacementFallback f =
new DecoderReplacementFallback ();
Assert.AreEqual ("?", f.DefaultString, "#1");
Assert.AreEqual (1, f.MaxCharCount, "#2");
f = new DecoderReplacementFallback (String.Empty);
Assert.AreEqual (String.Empty, f.DefaultString, "#3");
Assert.AreEqual (0, f.MaxCharCount, "#4");
f = Encoding.UTF8.DecoderFallback as DecoderReplacementFallback;
Assert.IsNotNull (f, "#5");
// This behavior was introduced as
// http://support.microsoft.com/kb/940521/
Assert.AreEqual ("\uFFFD", f.DefaultString, "#6");
Assert.AreEqual (1, f.MaxCharCount, "#7");
// after beta2 this test became invalid.
//f = new MyEncoding ().DecoderFallback as DecoderReplacementFallback;
//Assert.IsNotNull (f, "#8");
//Assert.AreEqual (String.Empty, f.DefaultString, "#9");
//Assert.AreEqual (0, f.MaxCharCount, "#10");
f = DecoderFallback.ReplacementFallback as DecoderReplacementFallback;
Assert.AreEqual ("?", f.DefaultString, "#11");
Assert.AreEqual (1, f.MaxCharCount, "#12");
}
[Test]
[ExpectedException (typeof (InvalidOperationException))]
public void DontChangeReadOnlyUTF8DecoderFallback ()
{
Encoding.UTF8.DecoderFallback =
new DecoderReplacementFallback ();
}
[Test]
public void DontChangeReadOnlyCodePageDecoderFallback ()
{
Encoding encoding = Encoding.GetEncoding (Encoding.Default.CodePage);
try {
encoding.DecoderFallback = new DecoderReplacementFallback ();
Assert.Fail ("#1");
} catch (InvalidOperationException ex) {
Assert.AreEqual (typeof (InvalidOperationException), ex.GetType (), "#2");
Assert.IsNull (ex.InnerException, "#3");
Assert.IsNotNull (ex.Message, "#4");
}
}
[Test]
[ExpectedException (typeof (InvalidOperationException))]
public void CustomEncodingSetEncoderFallback ()
{
new MyEncoding ().DecoderFallback =
new DecoderReplacementFallback ();
}
[Test]
[ExpectedException (typeof (InvalidOperationException))]
public void EncodingSetNullDecoderFallback ()
{
Encoding.Default.DecoderFallback = null;
}
[Test]
// Don't throw an exception
public void SetDecoderFallback ()
{
Encoding.Default.GetDecoder ().Fallback =
new DecoderReplacementFallback ();
}
[Test]
[ExpectedException (typeof (ArgumentNullException))]
public void DecoderSetNullFallback ()
{
Encoding.Default.GetDecoder ().Fallback = null;
}
}
}
#endif
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