public void ReadByte_ReadsEffectiveLengthTimes(
int from,
int to,
int innerLength,
int effectiveLength
)
{
// Arrange
var mockInnerStream = new Mock <Stream>();
mockInnerStream.Setup(s => s.CanSeek).Returns(true);
mockInnerStream.Setup(s => s.Length).Returns(innerLength);
var range = new RangeItemHeaderValue(from, to);
var counter = 0;
using (var rangeStream = new ByteRangeStream(mockInnerStream.Object, range))
{
// Act
while (rangeStream.ReadByte() != -1)
{
counter++;
}
// Assert
mockInnerStream.Verify(s => s.ReadByte(), Times.Exactly(effectiveLength));
Assert.Equal(effectiveLength, counter);
Assert.Equal(effectiveLength, rangeStream.Position);
}
}
public async Task ReadByte_CanReadAfterLength()
{
// Arrange
var originalText = "This is the whole text.";
var range = new RangeItemHeaderValue(0L, null);
using (var innerStream = new MemoryStream())
using (var writer = new StreamWriter(innerStream))
{
await writer.WriteAsync(originalText);
await writer.FlushAsync();
using (var rangeStream = new ByteRangeStream(innerStream, range))
{
rangeStream.Position = 50L;
// Act
var read = rangeStream.ReadByte();
// Assert
Assert.Equal(-1, read);
}
}
}
public async Task Seek_PositionsNextRead(int offset, SeekOrigin origin)
{
// Arrange
var originalText = "890123456789";
var range = new RangeItemHeaderValue(2L, null);
using (var innerStream = new MemoryStream())
using (var writer = new StreamWriter(innerStream))
{
await writer.WriteAsync(originalText);
await writer.FlushAsync();
using (var rangeStream = new ByteRangeStream(innerStream, range))
{
// Act
rangeStream.Seek(offset, origin);
// Assert
var read = rangeStream.ReadByte();
Assert.Equal('5', (char)read);
}
}
}
public void ReadByte_ReadsEffectiveLengthTimes(int from, int to, int innerLength, int effectiveLength)
{
// Arrange
Mock<Stream> mockInnerStream = new Mock<Stream>();
mockInnerStream.Setup(s => s.CanSeek).Returns(true);
mockInnerStream.Setup(s => s.Length).Returns(innerLength);
RangeItemHeaderValue range = new RangeItemHeaderValue(from, to);
// Act
ByteRangeStream rangeStream = new ByteRangeStream(mockInnerStream.Object, range);
int counter = 0;
while (rangeStream.ReadByte() != -1)
{
counter++;
}
// Assert
Assert.Equal(effectiveLength, counter);
mockInnerStream.Verify(s => s.ReadByte(), Times.Exactly(effectiveLength));
}