public void GetOffset_SingleSegment_SequencePositionSegment()
{
var data = new T[0];
var sequence = new ReadOnlySequence <T>(data);
Assert.Equal(0, sequence.GetOffset(new SequencePosition(data, 0)));
// Invalid positions
Assert.Throws <ArgumentOutOfRangeException>(() => sequence.GetOffset(new SequencePosition(data, 1)));
}
public void GetOffset_MultiSegment_SequencePositionSegment()
{
// [0] -> [0] -> [0] -> [50]
var bufferSegment1 = new BufferSegment <T>(new T[0]);
BufferSegment <T> bufferSegment2 = bufferSegment1.Append(new T[0]);
BufferSegment <T> bufferSegment3 = bufferSegment2.Append(new T[0]);
BufferSegment <T> bufferSegment4 = bufferSegment3.Append(new T[50]);
var sequence = new ReadOnlySequence <T>(bufferSegment1, 0, bufferSegment4, 50);
Assert.Equal(0, sequence.GetOffset(new SequencePosition(bufferSegment1, 0)));
Assert.Equal(0, sequence.GetOffset(new SequencePosition(bufferSegment2, 0)));
Assert.Equal(0, sequence.GetOffset(new SequencePosition(bufferSegment3, 0)));
Assert.Equal(0, sequence.GetOffset(new SequencePosition(bufferSegment4, 0)));
// Invalid positions
Assert.Throws <ArgumentOutOfRangeException>(() => sequence.GetOffset(new SequencePosition(bufferSegment1, 1)));
Assert.Throws <ArgumentOutOfRangeException>(() => sequence.GetOffset(new SequencePosition(bufferSegment2, 1)));
Assert.Throws <ArgumentOutOfRangeException>(() => sequence.GetOffset(new SequencePosition(bufferSegment3, 1)));
for (int i = 0; i <= bufferSegment4.Memory.Length; i++)
{
Assert.Equal(i, sequence.GetOffset(new SequencePosition(bufferSegment4, i)));
}
}
public void GetOffset_MultiSegment_PositionOutOfRange_SegmentNotFound()
{
ReadOnlySequence <T> buffer = GetFourSegmentsReadOnlySequence();
ReadOnlySequence <T> buffer2 = GetFourSegmentsReadOnlySequence();
Assert.Throws <ArgumentOutOfRangeException>("position", () => buffer.GetOffset(buffer2.GetPosition(25)));
}
public void GetOffset_MultiSegment_InvalidSequencePositionSegment()
{
ReadOnlySequence <T> buffer = GetFourSegmentsReadOnlySequence();
ReadOnlySequence <T> buffer2 = new ReadOnlySequence <T>(new T[50]);
Assert.Throws <InvalidCastException>(() => buffer.GetOffset(buffer2.GetPosition(25)));
}
public void GetOffset_SingleSegment_PositionOutOfRange()
{
var positionObject = new T[50];
var buffer = new ReadOnlySequence <T>(positionObject);
Assert.Throws <ArgumentOutOfRangeException>("position", () => buffer.GetOffset(new SequencePosition(positionObject, 75)));
}
public void GetOffset_MultiSegment_PositionOutOfRange()
{
(BufferSegment <T> bufferSegment1, BufferSegment <T> bufferSegment4) = GetBufferSegment();
var buffer = new ReadOnlySequence <T>(bufferSegment1, 0, bufferSegment4, 50);
Assert.Throws <ArgumentOutOfRangeException>("position", () => buffer.GetOffset(new SequencePosition(bufferSegment4, 200)));
}
public void GetOffset_MultiSegment_Slice()
{
ReadOnlySequence <T> buffer = GetFourSegmentsReadOnlySequence();
for (int i = 0; i <= buffer.Length; i++)
{
Assert.Equal(buffer.Slice(0, i).Length, buffer.GetOffset(buffer.GetPosition(i)));
}
}
public void GetOffset_SingleSegment_Slice()
{
ReadOnlySequence <T> buffer = new ReadOnlySequence <T>(new T[50]);
for (int i = 0; i <= buffer.Length; i++)
{
Assert.Equal(buffer.Slice(0, i).Length, buffer.GetOffset(buffer.GetPosition(i)));
}
}
public void GetOffset_MultiSegment_BoundaryConditions()
{
// [50] -> [50] -> [0] -> [50]
var bufferSegment1 = new BufferSegment <T>(new T[50]);
BufferSegment <T> bufferSegment2 = bufferSegment1.Append(new T[50]);
BufferSegment <T> bufferSegment3 = bufferSegment2.Append(new T[0]);
BufferSegment <T> bufferSegment4 = bufferSegment3.Append(new T[50]);
var sequence = new ReadOnlySequence <T>(bufferSegment1, 0, bufferSegment4, 50);
// Non empty adjacent segment
Assert.Equal(50, sequence.GetOffset(new SequencePosition(bufferSegment1, 50)));
Assert.Equal(50, sequence.GetOffset(new SequencePosition(bufferSegment2, 0)));
Assert.Equal(51, sequence.GetOffset(new SequencePosition(bufferSegment2, 1)));
// Empty adjacent segment
Assert.Equal(100, sequence.GetOffset(new SequencePosition(bufferSegment2, 50)));
Assert.Equal(100, sequence.GetOffset(new SequencePosition(bufferSegment3, 0)));
Assert.Equal(101, sequence.GetOffset(new SequencePosition(bufferSegment4, 1)));
// Cannot get 101 starting from empty adjacent segment
Assert.Throws <ArgumentOutOfRangeException>(() => sequence.GetOffset(new SequencePosition(bufferSegment3, 1)));
}
public void GetOffset_MultiSegment_NullPositionObject()
{
ReadOnlySequence <T> buffer = GetFourSegmentsReadOnlySequence();
Assert.Equal(0, buffer.GetOffset(new SequencePosition(null, 25)));
}
public void GetOffset_SingleSegment_NullPositionObject()
{
var buffer = new ReadOnlySequence <T>(new T[50]);
Assert.Equal(0, buffer.GetOffset(new SequencePosition(null, 25)));
}
public void GetOffset_MultiSegment_MiddleSegment()
{
ReadOnlySequence <T> buffer = GetFourSegmentsReadOnlySequence();
Assert.Equal(75, buffer.GetOffset(buffer.GetPosition(75)));
}
public void GetOffset_SingleSegment()
{
var buffer = new ReadOnlySequence <T>(new T[50]);
Assert.Equal(25, buffer.GetOffset(buffer.GetPosition(25)));
}