public void ReadPointsReadFailure()
{
// Well formed data
byte[] streamData =
{
// max is 2
2, 0, 0, 0,
// count is 2
2, 0, 0, 0,
// x0 = 729
217, 2, 0, 0,
// y0 = 446
190, 1, 0, 0,
// x1 = 0
0, 0, 0, 0,
// y1 = 0
0, 0, 0, 0,
};
// The stream contains exactly the correct amount of data.
// With fewer data, an error should rise.
for (int dataSize = 0; dataSize < streamData.Length - 1; dataSize++)
{
WangStream stream = new WangStream(streamData);
int[] read = WangAnnotationStructureReader.ReadPoints(stream, dataSize);
Assert.IsTrue(read == null);
}
}
public void ReadPointsStdShort()
{
// Well formed data with 4 extra last byte
byte[] streamData =
{
// max is 2
2, 0, 0, 0,
// count is 2
2, 0, 0, 0,
// x0 = 0
0, 0, 0, 0,
// y0 = 0
0, 0, 0, 0,
// x1 = 729
217, 2, 0, 0,
// y1 = 446
190, 1, 0, 0,
// extra
1, 2, 3, 4
};
int expectedPointsCount = 2;
int[] expectedPoints =
{
// X0, Y0
0, 0,
// X1, Y1
729, 446
};
WangStream stream = new WangStream(streamData);
int[] read = WangAnnotationStructureReader.ReadPoints(stream, 24);
Assert.IsTrue(read != null);
Assert.AreEqual(2, WangAnnotationTranslation.PointsLength(read));
Assert.AreEqual(4, stream.AvailableBytes());
for (int index = 0; index < expectedPointsCount; index++)
{
Assert.AreEqual(expectedPoints[index * 2], WangAnnotationTranslation.PointX(index, read));
Assert.AreEqual(expectedPoints[index * 2 + 1], WangAnnotationTranslation.PointY(index, read));
}
}
public void ReadPointsStdGreaterMax()
{
// Well formed data
byte[] streamData =
{
// max is 2
2, 0, 0, 0,
// count is 1
1, 0, 0, 0,
// x0 = 729
217, 2, 0, 0,
// y0 = 446
190, 1, 0, 0,
// x1 = 0
0, 0, 0, 0,
// y1 = 0
0, 0, 0, 0,
};
int expectedPointsCount = 1;
int[] expectedPoints =
{
// X1, Y1
729, 446
};
WangStream stream = new WangStream(streamData);
int[] read = WangAnnotationStructureReader.ReadPoints(stream, 24);
Assert.IsTrue(read != null);
Assert.AreEqual(1, WangAnnotationTranslation.PointsLength(read));
Assert.AreEqual(0, stream.AvailableBytes());
for (int index = 0; index < expectedPointsCount; index++)
{
Assert.AreEqual(expectedPoints[index * 2], WangAnnotationTranslation.PointX(index, read));
Assert.AreEqual(expectedPoints[index * 2 + 1], WangAnnotationTranslation.PointY(index, read));
}
}
public void ReadPointsMalformed()
{
// Mall formed data: count is 2 while max is 1
byte[] streamData =
{
// max is 1
1, 0, 0, 0,
// count is 2
2, 0, 0, 0,
// x0 = 729
217, 2, 0, 0,
// y0 = 446
190, 1, 0, 0,
// x1 = 0
0, 0, 0, 0,
// y1 = 0
0, 0, 0, 0,
};
WangStream stream = new WangStream(streamData);
int[] read = WangAnnotationStructureReader.ReadPoints(stream, streamData.Length);
Assert.IsTrue(read == null);
}