public void PeekReturnsByteWithoutMoving()
{
var reader = new ReadOnlyBufferReader(Factory.CreateWithContent(new byte[] { 1, 2 }));
Assert.Equal(1, reader.Peek());
Assert.Equal(1, reader.Peek());
}
public void EmptySegmentsAreSkippedOnMoveNext()
{
var buffer = Factory.CreateWithContent(new byte[] { 1, 2 });
var reader = new ReadOnlyBufferReader(buffer);
Assert.Equal(1, reader.Peek());
reader.Skip(1);
Assert.Equal(2, reader.Peek());
}
public void PeekWorkesWithEmptySegments()
{
var buffer = Factory.CreateWithContent(new byte[] { 1 });
var reader = new ReadOnlyBufferReader(buffer);
Assert.Equal(0, reader.Index);
Assert.Equal(1, reader.Span.Length);
Assert.Equal(1, reader.Peek());
Assert.Equal(1, reader.Take());
Assert.Equal(-1, reader.Peek());
Assert.Equal(-1, reader.Take());
}
public void SkipSingleBufferSkipsBytes()
{
var reader = new ReadOnlyBufferReader(BufferUtilities.CreateBuffer(new byte[] { 1, 2, 3, 4, 5 }));
reader.Skip(2);
Assert.Equal(2, reader.Index);
Assert.Equal(3, reader.Span[reader.Index]);
Assert.Equal(3, reader.Peek());
reader.Skip(2);
Assert.Equal(5, reader.Peek());
Assert.Equal(4, reader.Index);
Assert.Equal(5, reader.Span[reader.Index]);
}
public void PeekTraversesSegments()
{
var buffer = Factory.CreateWithContent(new byte[] { 1, 2 });
var reader = new ReadOnlyBufferReader(buffer);
Assert.Equal(1, reader.Span[reader.Index]);
Assert.Equal(1, reader.Take());
Assert.Equal(2, reader.Span[reader.Index]);
Assert.Equal(2, reader.Peek());
Assert.Equal(2, reader.Take());
Assert.Equal(-1, reader.Peek());
Assert.Equal(-1, reader.Take());
}
public void CtorFindsFirstNonEmptySegment()
{
var buffer = Factory.CreateWithContent(new byte[] { 1 });
var reader = new ReadOnlyBufferReader(buffer);
Assert.Equal(1, reader.Peek());
}
public void PeekGoesToEndIfAllEmptySegments()
{
var buffer = BufferUtilities.CreateBuffer(new[] { new byte[] { }, new byte[] { }, new byte[] { }, new byte[] { } });
var reader = new ReadOnlyBufferReader(buffer);
Assert.Equal(-1, reader.Peek());
Assert.True(reader.End);
}
public void SkipToEndThenPeekReturnsMinusOne()
{
var reader = new ReadOnlyBufferReader(Factory.CreateWithContent(new byte[] { 1, 2, 3, 4, 5 }));
reader.Skip(5);
Assert.True(reader.End);
Assert.Equal(-1, reader.Peek());
}
public void PeekReturnsMinuOneByteInTheEnd()
{
var reader = new ReadOnlyBufferReader(Factory.CreateWithContent(new byte[] { 1, 2 }));
Assert.Equal(1, reader.Take());
Assert.Equal(2, reader.Take());
Assert.Equal(-1, reader.Peek());
}
public void WorkesWithEmptyBuffer()
{
var reader = new ReadOnlyBufferReader(Factory.CreateWithContent(new byte[] { }));
Assert.Equal(0, reader.Index);
Assert.Equal(0, reader.Span.Length);
Assert.Equal(-1, reader.Peek());
Assert.Equal(-1, reader.Take());
}
public void SlicingBufferReturnsCorrectCursor()
{
var buffer = Factory.CreateWithContent(new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 });
var sliced = buffer.Slice(2);
var reader = new ReadOnlyBufferReader(sliced);
Assert.Equal(sliced.ToArray(), buffer.Slice(reader.Cursor).ToArray());
Assert.Equal(2, reader.Peek());
Assert.Equal(0, reader.Index);
}