public void DecoderFallbackBufferMoveBack()
{
var buffer = new EscapeOutRangeEncoding.EscapeOutRangeDecoderFallbackBuffer();
byte[] invalidBuffer = { 0xE2, 0x81 };
Assert.True(buffer.Fallback(invalidBuffer, 0));
Assert.AreEqual(9, buffer.Remaining);
Assert.AreEqual('[', buffer.GetNextChar());
Assert.AreEqual(8, buffer.Remaining);
Assert.AreEqual('@', buffer.GetNextChar());
Assert.AreEqual(7, buffer.Remaining);
Assert.IsTrue(buffer.MovePrevious());
Assert.AreEqual(8, buffer.Remaining);
Assert.AreEqual('@', buffer.GetNextChar());
Assert.IsTrue(buffer.MovePrevious());
Assert.AreEqual(8, buffer.Remaining);
Assert.IsTrue(buffer.MovePrevious());
Assert.AreEqual(9, buffer.Remaining);
Assert.IsFalse(buffer.MovePrevious());
Assert.AreEqual(9, buffer.Remaining);
Assert.AreEqual('[', buffer.GetNextChar());
}
public void DecoderFallbackBufferResets()
{
var buffer = new EscapeOutRangeEncoding.EscapeOutRangeDecoderFallbackBuffer();
byte[] invalidBuffer = { 0xE2, 0x81 };
Assert.True(buffer.Fallback(invalidBuffer, 0));
Assert.AreEqual(9, buffer.Remaining);
Assert.AreEqual('[', buffer.GetNextChar());
Assert.AreEqual(8, buffer.Remaining);
Assert.AreEqual('@', buffer.GetNextChar());
Assert.AreEqual(7, buffer.Remaining);
buffer.Reset();
Assert.AreEqual(0, buffer.Remaining);
Assert.AreEqual('\0', buffer.GetNextChar());
}
public void DecoderFallbackBufferGetsBuffer()
{
var buffer = new EscapeOutRangeEncoding.EscapeOutRangeDecoderFallbackBuffer();
byte[] invalidBuffer = { 0xE2, 0x81 };
Assert.True(buffer.Fallback(invalidBuffer, 0));
string replacement = "[@!!E281]";
for (int i = 0; i < replacement.Length; i++)
{
Assert.AreEqual(replacement.Length - i, buffer.Remaining);
Assert.AreEqual(replacement[i], buffer.GetNextChar());
}
Assert.AreEqual(0, buffer.Remaining);
Assert.AreEqual('\0', buffer.GetNextChar());
}
