public void DecodeInPlace()
{
var list = new List <byte>();
for (int value = 0; value < 256; value++)
{
list.Add((byte)value);
}
var testBytes = list.ToArray();
for (int value = 0; value < 256; value++)
{
var sourceBytes = testBytes.AsSpan().Slice(0, value + 1);
var buffer = new byte[Base64Encoder.ComputeEncodedLength(sourceBytes.Length)];
var bufferSlice = buffer.AsSpan();
Base64Encoder.TryEncode(sourceBytes, bufferSlice, out int consumed, out int written);
var encodedText = Text.Encoding.ASCII.GetString(bufferSlice.ToArray());
var expectedText = Convert.ToBase64String(testBytes, 0, value + 1);
Assert.Equal(expectedText, encodedText);
var decodedByteCount = Base64Encoder.DecodeInPlace(bufferSlice);
Assert.Equal(sourceBytes.Length, decodedByteCount);
for (int i = 0; i < decodedByteCount; i++)
{
Assert.Equal(sourceBytes[i], buffer[i]);
}
}
}