void runTest() override
{
const MemoryBlock data ("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz", 52);
MemoryInputStream mi (data, true);
const int offset = getRandom().nextInt ((int) data.getSize());
const size_t subregionSize = data.getSize() - (size_t) offset;
SubregionStream stream (&mi, offset, (int) subregionSize, false);
beginTest ("Read");
expectEquals (stream.getPosition(), (int64) 0);
expectEquals (stream.getTotalLength(), (int64) subregionSize);
expectEquals (stream.getNumBytesRemaining(), stream.getTotalLength());
expect (! stream.isExhausted());
size_t numBytesRead = 0;
MemoryBlock readBuffer (subregionSize);
while (numBytesRead < subregionSize)
{
numBytesRead += (size_t) stream.read (&readBuffer[numBytesRead], 3);
expectEquals (stream.getPosition(), (int64) numBytesRead);
expectEquals (stream.getNumBytesRemaining(), (int64) (subregionSize - numBytesRead));
expect (stream.isExhausted() == (numBytesRead == subregionSize));
}
expectEquals (stream.getPosition(), (int64) subregionSize);
expectEquals (stream.getNumBytesRemaining(), (int64) 0);
expect (stream.isExhausted());
const MemoryBlock memoryBlockToCheck (data.begin() + (size_t) offset, data.getSize() - (size_t) offset);
expect (readBuffer == memoryBlockToCheck);
beginTest ("Skip");
stream.setPosition (0);
expectEquals (stream.getPosition(), (int64) 0);
expectEquals (stream.getTotalLength(), (int64) subregionSize);
expectEquals (stream.getNumBytesRemaining(), stream.getTotalLength());
expect (! stream.isExhausted());
numBytesRead = 0;
const int64 numBytesToSkip = 5;
while (numBytesRead < subregionSize)
{
stream.skipNextBytes (numBytesToSkip);
numBytesRead += numBytesToSkip;
numBytesRead = std::min (numBytesRead, subregionSize);
expectEquals (stream.getPosition(), (int64) numBytesRead);
expectEquals (stream.getNumBytesRemaining(), (int64) (subregionSize - numBytesRead));
expect (stream.isExhausted() == (numBytesRead == subregionSize));
}
expectEquals (stream.getPosition(), (int64) subregionSize);
expectEquals (stream.getNumBytesRemaining(), (int64) 0);
expect (stream.isExhausted());
}
