public void CopyToSmallerBufferWorks()
{
var content = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
Span <byte> buffer = new byte[content.Length];
var reader = BufferReader.Create(Factory.CreateWithContent(content));
// this loop skips more and more items in the reader
for (int i = 0; i < content.Length; i++)
{
// this loop makes the destination buffer smaller and smaller
for (int j = 0; j < buffer.Length - i; j++)
{
var bufferSlice = buffer.Slice(0, j);
bufferSlice.Clear();
int copied = BufferReaderExtensions.Peek(reader, bufferSlice);
Assert.Equal(Math.Min(bufferSlice.Length, content.Length - i), copied);
Assert.True(bufferSlice.Slice(0, copied).SequenceEqual(content.AsSpan().Slice(i, j)));
}
reader.Advance(1);
}
}
public void CopyToLargerBufferWorks()
{
var content = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
Span <byte> buffer = new byte[content.Length + 1];
var reader = BufferReader.Create(Factory.CreateWithContent(content));
// this loop skips more and more items in the reader
for (int i = 0; i < content.Length; i++)
{
int copied = BufferReaderExtensions.Peek(reader, buffer);
Assert.Equal(content.Length - i, copied);
Assert.True(buffer.Slice(0, copied).SequenceEqual(content.AsSpan().Slice(i)));
// make sure that nothing more got written, i.e. tail is empty
for (int r = copied; r < buffer.Length; r++)
{
Assert.Equal(0, buffer[r]);
}
reader.Advance(1);
buffer.Clear();
}
}
