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//
// EncoderReplacementFallback.cs
//
// Author:
// Atsushi Enomoto <atsushi@ximian.com>
//
// Copyright (C) 2005 Novell, Inc. http://www.novell.com
//
using System;
using System.IO;
using System.Text;
using NUnit.Framework;
namespace MonoTests.System.Text
{
[TestFixture]
public class EncoderReplacementFallbackTest
{
[Test]
public void Defaults ()
{
EncoderReplacementFallback f =
new EncoderReplacementFallback ();
Assert.AreEqual ("?", f.DefaultString, "#1");
Assert.AreEqual (1, f.MaxCharCount, "#2");
f = new EncoderReplacementFallback (String.Empty);
Assert.AreEqual (String.Empty, f.DefaultString, "#3");
Assert.AreEqual (0, f.MaxCharCount, "#4");
f = Encoding.UTF8.EncoderFallback as EncoderReplacementFallback;
Assert.IsNotNull (f, "#5");
Assert.AreEqual ("\uFFFD", f.DefaultString, "#6");
Assert.AreEqual (1, f.MaxCharCount, "#7");
// after beta2 this test became invalid.
//f = new MyEncoding ().EncoderFallback as EncoderReplacementFallback;
//Assert.IsNotNull (f, "#8");
//Assert.AreEqual (String.Empty, f.DefaultString, "#9");
//Assert.AreEqual (0, f.MaxCharCount, "#10");
f = EncoderFallback.ReplacementFallback as EncoderReplacementFallback;
Assert.AreEqual ("?", f.DefaultString, "#11");
Assert.AreEqual (1, f.MaxCharCount, "#12");
}
[Test]
[ExpectedException (typeof (InvalidOperationException))]
public void DontChangeReadOnlyUTF8EncoderFallback ()
{
Encoding.UTF8.EncoderFallback =
new EncoderReplacementFallback ();
}
[Test]
public void DontChangeReadOnlyCodePageEncoderFallback ()
{
Encoding encoding = Encoding.GetEncoding (Encoding.Default.CodePage);
try {
encoding.EncoderFallback = new EncoderReplacementFallback ();
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 ().EncoderFallback =
new EncoderReplacementFallback ();
}
[Test]
[ExpectedException (typeof (InvalidOperationException))]
public void EncodingSetNullEncoderFallback ()
{
Encoding.Default.EncoderFallback = null;
}
[Test]
// Don't throw an exception
public void SetEncoderFallback ()
{
Encoding.Default.GetEncoder ().Fallback =
new EncoderReplacementFallback ();
}
[Test]
[ExpectedException (typeof (ArgumentNullException))]
public void EncoderSetNullFallback ()
{
Encoding.Default.GetEncoder ().Fallback = null;
}
[Test]
public void Latin1Replacement ()
// coz Latin1 is easy single byte encoding.
{
Encoding enc = Encoding.GetEncoding (28591); // Latin1
byte [] reference = new byte [] {0x58, 0x58, 0x3F, 0x3F, 0x3F, 0x5A, 0x5A};
byte [] bytes = enc.GetBytes ("XX\u3007\u4E00\u9780ZZ");
Assert.AreEqual (reference, bytes, "#1");
}
}
}
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