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 Warmup_pulls_atleast_windowSize_data_from_stream() { int window = 100; var streamMock = new Mock<MemoryStream>(MockBehavior.Strict); streamMock.Setup(x => x.Read( It.IsAny<byte[]>(), It.IsAny<int>(), It.Is<int>(i => i >= window))) .Returns((byte[] s, int o, int l) => l); var buf = new SlidingStreamBuffer(streamMock.Object, window); buf.Warmup(); streamMock.VerifyAll(); }
public void MoveForward_throws_for_zero_size() { int window = 100; var streamMock = new Mock<MemoryStream>(MockBehavior.Strict); SetupMockStreamRead(streamMock).Returns((byte[] s, int o, int l) => l); var buf = new SlidingStreamBuffer(streamMock.Object, window, 0); buf.Warmup(); buf.MoveForward(0); }
public void MoveForward_stops_at_end_of_stream() { 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); buf.Warmup(); buf.MoveForward(window + 1); }
public void MoveForward_shifts_index_for_byte_retrieval() { 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(); Assert.AreEqual(buffer[5], buf[5]); buf.MoveForward(1); buf.MoveForward(3); Assert.AreEqual(buffer[9], buf[5]); }
public void GetByteAt_throws_exception_for_index_over_windowSize() { int window = 100; var streamMock = new Mock<MemoryStream>(MockBehavior.Strict); SetupMockStreamRead(streamMock).Returns((byte[] s, int o, int l) => window); var buf = new SlidingStreamBuffer(streamMock.Object, window); buf.GetByteAt(window); }
public void MoveForward_pulls_at_most_windowSize_plus_extrabuffer_minus_totalValidBytes() { 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) => { if (l > buffer.Length - o) Assert.Fail("Too much data being read"); return l; }); var buf = new SlidingStreamBuffer(streamMock.Object, window, window); buf.Warmup(); buf.MoveForward(window + 1); buf.MoveForward(1); }
public void MoveForward_doesnt_cause_more_data_to_be_read_when_a_padding_buffer_is_supplied() { int window = 100; var streamMock = new Mock<MemoryStream>(MockBehavior.Strict); SetupMockStreamRead(streamMock).Returns((byte[] s, int o, int l) => l); var buf = new SlidingStreamBuffer(streamMock.Object, window, 3); buf.Warmup(); buf.MoveForward(1); buf.MoveForward(1); buf.MoveForward(1); buf.GetByteAt(0); streamMock.Verify(x => x.Read( It.IsAny<byte[]>(), It.IsAny<int>(), It.IsAny<int>()), Times.Exactly(1)); }
public void MoveForward_beyond_windowSize_with_no_more_data_in_stream_yields_NumAvailable_lower_than_windowSize() { 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(window + 1); Assert.AreEqual(window - 1, buf.GetNumBytesAvailable()); }
public void Indexer_throw_exception_for_negative_index() { 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); int i = buf[-1]; }
public void GetNumBytesAvailable_when_moved_to_end_of_stream_returns_zero() { 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); Assert.AreEqual(0, buf.GetNumBytesAvailable()); }
public void GetNumBytesAvailable_returns_windowSize_for_full_read() { int window = 100; var streamMock = new Mock<MemoryStream>(MockBehavior.Strict); SetupMockStreamRead(streamMock) .Returns((byte[] s, int o, int l) => l); var buf = new SlidingStreamBuffer(streamMock.Object, window); buf.Warmup(); Assert.AreEqual(window, buf.GetNumBytesAvailable()); }
public void MoveForward_pulls_data_to_the_correct_offset_when_less_than_windowSize_bytes_remain() { int window = 100; var buffer = new byte[window*2]; for (int i = 0; i < buffer.Length; ++i) buffer[i] = (byte) (200 - i); bool warmupFillComplete = false; var streamMock = new Mock<MemoryStream>(MockBehavior.Strict); SetupMockStreamRead(streamMock) .Returns((byte[] s, int o, int l) => { if (warmupFillComplete && o != window - 1) Assert.Fail("Wrong offset being read to"); warmupFillComplete = true; return l; }); var buf = new SlidingStreamBuffer(streamMock.Object, window, window); buf.Warmup(); buf.MoveForward(window + 1); }
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); }
public void GetByteAt_retrieves_correct_byte() { int window = 100; var buffer = new byte[window]; 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(); Assert.AreEqual(buffer[5], buf.GetByteAt(5)); }