public void GetByteRange_WhenBufferIsSmallerThanRequestedCount_Throws()
{
// Arrange
var bytes = Enumerable.Range(0, 255).Select(i => (byte)i).ToArray();
using var ms = new MemoryStream(bytes);
var streamByteBuffer = new StreamByteBuffer(ms, 0, 255);
// Act + Assert
var buffer = new byte[10];
Assert.Throws <ArgumentException>(() => streamByteBuffer.GetByteRange(0, 20, buffer));
}
public void GetByteRange_CompareWithInitializer_ExactMatch(int ctorOffset, int ctorCount, int byteRangeOffset, int byteRangeCount)
{
// Arrange
var bytes = Enumerable.Range(0, 255).Select(i => (byte)i).ToArray();
using var ms = new MemoryStream(bytes);
var buffer = new StreamByteBuffer(ms, ctorOffset, ctorCount);
var expected = new ArraySegment <byte>(bytes, ctorOffset + byteRangeOffset, Math.Min(ctorCount, byteRangeCount));
// Act
var actual = new byte[Math.Min(ctorCount, byteRangeCount)];
buffer.GetByteRange(byteRangeOffset, byteRangeCount, actual);
// Assert
Assert.Equal(expected.Count, actual.Length);
Assert.Equal(expected, actual);
}