public void GetBuffer_calls_warmup_if_necessary()
{
int window = 100;
var streamMock = new Mock<MemoryStream>(MockBehavior.Strict);
SetupMockStreamRead(streamMock).Returns((byte[] s, int o, int l) => 50);
var buf = new SlidingStreamBuffer(streamMock.Object, window);
buf.GetBuffer();
streamMock.VerifyAll();
}
public void GetBuffer_returns_a_buffer_corresponding_to_GetNumBytesAvailable()
{
int window = 100;
var streamMock = new Mock<MemoryStream>(MockBehavior.Strict);
SetupMockStreamRead(streamMock).Returns((byte[] s, int o, int l) => 50);
var buf = new SlidingStreamBuffer(streamMock.Object, window);
buf.Warmup();
streamMock.VerifyAll();
Assert.AreEqual(buf.GetNumBytesAvailable(), buf.GetBuffer().Length);
}
public void GetBuffer_returns_a_buffer_with_valid_data()
{
int window = 100;
var buffer = new byte[window*2];
for (int i = 0; i < buffer.Length; ++i) buffer[i] = (byte) (200 - i);
var streamMock = new Mock<MemoryStream>(MockBehavior.Strict);
SetupMockStreamRead(streamMock)
.Returns((byte[] s, int o, int l) =>
{
int actualLength = MathEx.Bounded(0, Math.Min(l, buffer.Length), buffer.Length);
Array.Copy(buffer, 0, s, o, actualLength);
return actualLength;
});
var buf = new SlidingStreamBuffer(streamMock.Object, window);
buf.Warmup();
VerifyBufferPartialEquality(buffer, buf.GetBuffer());
}
public void GetBuffer_when_moved_beyond_end_of_stream_yields_empty_buffer()
{
int window = 10;
var buffer = new byte[window*2];
for (int i = 0; i < buffer.Length; ++i) buffer[i] = (byte) (200 - i);
var buf = new SlidingStreamBuffer(new MemoryStream(buffer), window, window);
buf.Warmup();
buf.MoveForward(buffer.Length + 1);
Assert.IsTrue(buf.GetBuffer().Length == 0);
}