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// ASCIIEncodingTest - NUnit Test Cases for the System.Text.ASCIIEncoding class
//
// Author: Mike Kestner <mkestner@speakeasy.net>
//
// <c> 2002 Mike Kestner
using System;
using System.Text;
using NUnit.Framework;
using NUnit.Framework.Constraints;
#if !MOBILE
using NUnit.Framework.SyntaxHelpers;
#endif
namespace MonoTests.System.Text
{
[TestFixture]
public class ASCIIEncodingTest
{
private char[] testchars;
private byte[] testbytes;
[SetUp]
public void SetUp ()
{
testchars = new char[4];
testchars[0] = 'T';
testchars[1] = 'e';
testchars[2] = 's';
testchars[3] = 't';
testbytes = new byte[4];
testbytes[0] = (byte) 'T';
testbytes[1] = (byte) 'e';
testbytes[2] = (byte) 's';
testbytes[3] = (byte) 't';
}
[Test]
public void IsBrowserDisplay ()
{
Assert.IsFalse (Encoding.ASCII.IsBrowserDisplay);
}
[Test]
public void IsBrowserSave ()
{
Assert.IsFalse (Encoding.ASCII.IsBrowserSave);
}
[Test]
public void IsMailNewsDisplay ()
{
Assert.IsTrue (Encoding.ASCII.IsMailNewsDisplay);
}
[Test]
public void IsMailNewsSave ()
{
Assert.IsTrue (Encoding.ASCII.IsMailNewsSave);
}
[Test] // Test GetBytes(char[])
public void TestGetBytes1 ()
{
Encoding ascii_encoding = Encoding.ASCII;
byte[] bytes = ascii_encoding.GetBytes(testchars);
for (int i = 0; i < testchars.Length; i++)
Assert.AreEqual (testchars[i], (char) bytes[i]);
}
[Test] // Test GetBytes(char[], int, int)
public void TestGetBytes2 ()
{
Encoding ascii_encoding = Encoding.ASCII;
byte[] bytes = ascii_encoding.GetBytes(testchars, 1, 1);
Assert.AreEqual (1, bytes.Length, "#1");
Assert.AreEqual (testchars [1], (char) bytes [0], "#2");
}
[Test] // Test non-ASCII char in char[]
public void TestGetBytes3 ()
{
Encoding ascii_encoding = Encoding.ASCII;
testchars[2] = (char) 0x80;
byte[] bytes = ascii_encoding.GetBytes(testchars);
Assert.AreEqual ('T', (char) bytes [0], "#1");
Assert.AreEqual ('e', (char) bytes [1], "#2");
Assert.AreEqual ('?', (char) bytes [2], "#3");
Assert.AreEqual ('t', (char) bytes [3], "#4");
}
[Test] // Test GetBytes(char[], int, int, byte[], int)
public void TestGetBytes4 ()
{
Encoding ascii_encoding = Encoding.ASCII;
byte[] bytes = new Byte[1];
int cnt = ascii_encoding.GetBytes(testchars, 1, 1, bytes, 0);
Assert.AreEqual (1, cnt, "#1");
Assert.AreEqual (testchars [1], (char) bytes [0], "#2");
}
[Test] // Test GetBytes(string, int, int, byte[], int)
public void TestGetBytes5 ()
{
Encoding ascii_encoding = Encoding.ASCII;
byte[] bytes = new Byte[1];
int cnt = ascii_encoding.GetBytes("Test", 1, 1, bytes, 0);
Assert.AreEqual ('e', (char) bytes [0], "#1");
}
[Test] // Test GetBytes(string)
public void TestGetBytes6 ()
{
Encoding ascii_encoding = Encoding.ASCII;
byte[] bytes = ascii_encoding.GetBytes("Test");
for (int i = 0; i < testchars.Length; i++)
Assert.AreEqual (testchars [i], (char) bytes [i]);
}
[Test] // Test GetChars(byte[])
public void TestGetChars1 ()
{
Encoding ascii_encoding = Encoding.ASCII;
char[] chars = ascii_encoding.GetChars(testbytes);
for (int i = 0; i < testbytes.Length; i++)
Assert.AreEqual (testbytes[i], (byte) chars[i]);
}
[Test] // Test GetChars(byte[], int, int)
public void TestGetChars2 ()
{
Encoding ascii_encoding = Encoding.ASCII;
char[] chars = ascii_encoding.GetChars(testbytes, 1, 1);
Assert.AreEqual (1, chars.Length, "#1");
Assert.AreEqual (testbytes [1], (byte) chars [0], "#2");
}
[Test] // Test non-ASCII char in byte[]
public void TestGetChars3 ()
{
Encoding ascii_encoding = Encoding.ASCII;
testbytes[2] = 0x80;
char[] chars = ascii_encoding.GetChars(testbytes);
Assert.AreEqual ('T', chars [0], "#1");
Assert.AreEqual ('e', chars [1], "#2");
Assert.AreEqual ('?', chars [2], "#3");
Assert.AreEqual ('t', chars [3], "#4");
}
[Test] // Test GetChars(byte[], int, int, char[], int)
public void TestGetChars4 ()
{
Encoding ascii_encoding = Encoding.ASCII;
char[] chars = new char[1];
int cnt = ascii_encoding.GetChars(testbytes, 1, 1, chars, 0);
Assert.AreEqual (1, cnt, "#1");
Assert.AreEqual (testbytes [1], (byte) chars [0], "#2");
}
[Test] // Test GetString(char[])
public void TestGetString1 ()
{
Encoding ascii_encoding = Encoding.ASCII;
string str = ascii_encoding.GetString(testbytes);
Assert.AreEqual ("Test", str);
}
[Test] // Test GetString(char[], int, int)
public void TestGetString2 ()
{
Encoding ascii_encoding = Encoding.ASCII;
string str = ascii_encoding.GetString(testbytes, 1, 2);
Assert.AreEqual ("es", str);
}
[Test] // Test invalid byte handling
public void TestGetString3 ()
{
Encoding encoding = Encoding.ASCII;
byte [] bytes = new byte [] {0x61, 0xE1, 0xE2};
string s = encoding.GetString (bytes, 0, 3);
#if NET_2_0
Assert.AreEqual ("a??", s);
#else
Assert.AreEqual ("aab", s);
#endif
}
[Test] // Test Decoder
public void TestDecoder ()
{
Encoding ascii_encoding = Encoding.ASCII;
char[] chars = new char[1];
int cnt = ascii_encoding.GetDecoder().GetChars(testbytes, 1, 1, chars, 0);
Assert.AreEqual (1, cnt, "#1");
Assert.AreEqual (testbytes [1], (byte) chars [0], "#2");
}
[Test] // Test Decoder
public void TestEncoder ()
{
Encoding ascii_encoding = Encoding.ASCII;
byte[] bytes = new Byte[1];
int cnt = ascii_encoding.GetEncoder().GetBytes(testchars, 1, 1, bytes, 0, false);
Assert.AreEqual (1, cnt, "#1");
Assert.AreEqual (testchars [1], (char) bytes [0], "#2");
}
[Test]
public void TestZero ()
{
Encoding encoding = Encoding.ASCII;
Assert.AreEqual (string.Empty, encoding.GetString (new byte [0]), "#1");
Assert.AreEqual (string.Empty, encoding.GetString (new byte [0], 0, 0), "#2");
}
[Test]
[ExpectedException (typeof (DecoderFallbackException))]
public void DecoderFallback ()
{
Encoding e = Encoding.ASCII.Clone () as Encoding;
e.DecoderFallback = new DecoderExceptionFallback ();
e.GetChars (new byte [] {0x80});
}
[Test]
// [ExpectedException (typeof (ArgumentException))]
public void DecoderFallback2 ()
{
var bytes = new byte[] {
0x30, 0xa0, 0x31, 0xa8
};
var enc = (ASCIIEncoding)Encoding.ASCII.Clone ();
enc.DecoderFallback = new TestFallbackDecoder ();
var chars = new char [7];
var ret = enc.GetChars (bytes, 0, bytes.Length, chars, 0);
Console.WriteLine (ret);
for (int i = 0; i < chars.Length; i++) {
Console.Write ("{0:x2} ", (int)chars [i]);
}
Console.WriteLine ();
}
[Test]
public void DecoderFallback3 ()
{
var bytes = new byte[] {
0x30, 0xa0, 0x31, 0xa8
};
var enc = (ASCIIEncoding)Encoding.ASCII.Clone ();
enc.DecoderFallback = new TestFallbackDecoder ();
var chars = new char[] { '9', '8', '7', '6', '5' };
var ret = enc.GetChars (bytes, 0, bytes.Length, chars, 0);
Assert.That (ret, Is.EqualTo (4), "ret"); // FIXME: Wrong it should be 2
Assert.That (chars [0], Is.EqualTo ('0'), "chars[0]");
Assert.That (chars [1], Is.EqualTo ('1'), "chars[1]");
Assert.That (chars [2], Is.EqualTo ('7'), "chars[2]");
Assert.That (chars [3], Is.EqualTo ('6'), "chars[3]");
Assert.That (chars [4], Is.EqualTo ('5'), "chars[4]");
}
class TestFallbackDecoder : DecoderFallback {
const int count = 2;
public override int MaxCharCount {
get { return count; }
}
public override DecoderFallbackBuffer CreateFallbackBuffer ()
{
return new Buffer ();
}
class Buffer : DecoderFallbackBuffer {
char[] queue;
int index;
public override int Remaining {
get {
return queue.Length - index;
}
}
public override char GetNextChar ()
{
return index < queue.Length ? queue [index++] : '\0';
}
public override bool Fallback (byte[] bytes, int unused)
{
queue = new char[bytes.Length * count];
index = 0;
for (int i = 0; i < bytes.Length; i++) {
for (int j = 0; j < count; j++)
queue [index++] = (char)(bytes [i]+j);
}
return true;
}
public override bool MovePrevious ()
{
throw new NotImplementedException ();
}
public override void Reset ()
{
base.Reset ();
}
}
}
}
}
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