public void ReadDataTypeInvalidSize()
{
Random random = new Random(10);
for (int dataSize = 0; dataSize < 8; dataSize++)
{
// Random stream data
byte[] streamData = new byte[dataSize];
for (int index = 0; index < dataSize; index++)
{
streamData[index] = (byte)random.Next();
}
WangStream stream = new WangStream(streamData);
WangAnnotationsReader.WangDataType dataType;
int outputDataSize;
Assert.IsFalse(WangAnnotationsReader.ReadDataType(out dataType, out outputDataSize, stream));
Assert.AreEqual(WangAnnotationsReader.WangDataType.Invalid, dataType);
Assert.AreEqual(0, outputDataSize);
}
}
public void ReadDataTypeInvalid()
{
int[] invalidDataTypes =
{
0, 1, 3, 4, 7, 8, 9, 10
};
foreach (var expectedDataType in invalidDataTypes)
{
// Valid stream data but invalid data type
byte[] streamData = new byte[8];
Array.Copy(BitConverter.GetBytes((int)expectedDataType), streamData, 4);
Array.Copy(BitConverter.GetBytes((int)8), 0, streamData, 4, 4);
WangStream stream = new WangStream(streamData);
WangAnnotationsReader.WangDataType dataType;
int dataSize;
Assert.IsTrue(WangAnnotationsReader.ReadDataType(out dataType, out dataSize, stream));
Assert.AreEqual(WangAnnotationsReader.WangDataType.Invalid, dataType);
Assert.AreEqual(8, dataSize);
Assert.AreEqual(0, stream.AvailableBytes());
}
}
public void ReadDataTypeStd()
{
// The int values for the data types which will be tested.
int[] intTypes =
{
2, 5, 6
};
// The data types which will be tested, aligned with the corresponding entry
// in the intTypes array.
WangAnnotationsReader.WangDataType[] dataTypes =
{
WangAnnotationsReader.WangDataType.DefaultNamedBlock, WangAnnotationsReader.WangDataType.Attributes,
WangAnnotationsReader.WangDataType.NamedBlock
};
// The test runs with different data size. At least 8 bytes
// are required for the stream to be valid.
for (int expectedDataSize = 8; expectedDataSize < 40; expectedDataSize++)
{
for (int dataTypeIndex = 0; dataTypeIndex < intTypes.Length; dataTypeIndex++)
{
// Valid stream data
byte[] streamData = new byte[expectedDataSize];
Array.Copy(BitConverter.GetBytes(intTypes[dataTypeIndex]), streamData, 4);
Array.Copy(BitConverter.GetBytes((int)expectedDataSize), 0, streamData, 4, 4);
WangStream stream = new WangStream(streamData);
WangAnnotationsReader.WangDataType dataType;
int dataSize;
Assert.IsTrue(WangAnnotationsReader.ReadDataType(out dataType, out dataSize, stream));
Assert.AreEqual(expectedDataSize, dataSize);
Assert.AreEqual(dataTypes[dataTypeIndex], dataType);
Assert.AreEqual(expectedDataSize - 8, stream.AvailableBytes());
}
}
}
