public static void ReuseArrayWriter()
{
using var writer = new PooledArrayBufferWriter <byte>();
var span = writer.GetSpan(10);
span[0] = 20;
span[9] = 30;
writer.Advance(10);
writer.Clear();
span = writer.GetSpan(10);
span[0] = 40;
span[9] = 50;
writer.Advance(10);
Equal(40, writer.WrittenMemory.Span[0]);
Equal(50, writer.WrittenMemory.Span[9]);
}
public static void Insertion()
{
Span <byte> block = stackalloc byte[] { 10, 20, 30 };
using var writer = new PooledArrayBufferWriter <byte>();
writer.Insert(0, block);
Equal(3, writer.WrittenCount);
Equal(10, writer[0]);
Equal(20, writer[1]);
Equal(30, writer[2]);
block[0] = 40;
block[1] = 50;
block[2] = 60;
writer.Insert(3, block);
Equal(6, writer.WrittenCount);
Equal(10, writer[0]);
Equal(20, writer[1]);
Equal(30, writer[2]);
Equal(40, writer[3]);
Equal(50, writer[4]);
Equal(60, writer[5]);
writer.Clear(true);
var random = RandomBytes(writer.FreeCapacity);
writer.Write(random);
Equal(0, writer.FreeCapacity);
block[0] = 100;
block[1] = 110;
block[2] = 120;
writer.Insert(writer.WrittenCount - 1, block);
Equal(random[0..(random.Length - 1)], writer.WrittenMemory.Span.Slice(0, random.Length - 1).ToArray());