public void TestIncompleteSequence(Encoding codec, int charWidth)
{
Encoding penc = new PythonSurrogateEscapeEncoding(codec);
Assert.That(() => penc.GetBytes(_chars),
Throws.TypeOf <EncoderFallbackException>()
.With.Property("Index").EqualTo(3)
.And.Property("CharUnknown").EqualTo(_chars[3]));
var enc = penc.GetEncoder();
var bytes = new byte[_chars.Length * charWidth];
Assert.That(enc.GetByteCount(_chars, 0, 3, flush: false), Is.EqualTo(3 * charWidth));
Assert.That(() => enc.GetBytes(_chars, 0, 3, bytes, 0, flush: false), Throws.Nothing);
Assert.That(() => enc.GetBytes(_chars, 3, 2, bytes, 3 * charWidth, flush: false),
Throws.TypeOf <EncoderFallbackException>()
.With.Property("Index").EqualTo(0)
.And.Property("CharUnknown").EqualTo(_chars[3]));
enc.Reset();
Assert.That(enc.GetByteCount(_chars, 0, 4, flush: false), Is.EqualTo(3 * charWidth));
Assert.That(() => enc.GetBytes(_chars, 0, 4, bytes, 0, flush: false), Throws.Nothing);
Assert.That(() => enc.GetByteCount(_chars, 4, 1, flush: false),
Throws.TypeOf <EncoderFallbackException>()
.With.Property("Index").EqualTo(-1) // last char from previous increment
.And.Property("CharUnknown").EqualTo(_chars[3]));
}
public void TestAsciiByte(Encoding codec, int charWidth)
{
Encoding penc = new PythonSurrogateEscapeEncoding(codec);
Assert.That <byte[]>(() => penc.GetBytes(_chars),
Throws.TypeOf <EncoderFallbackException>()
.With.Property("Index").EqualTo(3)
.And.Property("CharUnknown").EqualTo(_chars[3]));
var enc = penc.GetEncoder();
var bytes = new byte[_chars.Length * charWidth];
Assert.That(enc.GetByteCount(_chars, 0, 3, flush: false), Is.EqualTo(3 * charWidth));
Assert.That <int>(() => enc.GetBytes(_chars, 0, 3, bytes, 0, flush: false), Throws.Nothing);
Assert.That <int>(() => enc.GetBytes(_chars, 3, 2, bytes, 3 * charWidth, flush: false),
Throws.TypeOf <EncoderFallbackException>()
.With.Property("Index").EqualTo(0)
.And.Property("CharUnknown").EqualTo(_chars[3]));
enc.Reset();
Assert.That <int>(() => enc.GetBytes(_chars, 0, 5, bytes, 3 * charWidth, flush: false),
Throws.TypeOf <EncoderFallbackException>()
.With.Property("Index").EqualTo(3)
.And.Property("CharUnknown").EqualTo(_chars[3]));
}