void run_streambuf_test()
{
StreamBuf b;
assert(b.size() == 0);
std::size_t q = ystreambuf::chunk_size;
assert( size(b.prepare(q-2)) == q-2 );
assert( size(b.prepare(1)) == 1 );
assert( size(b.prepare(q)) == q );
assert( size(b.prepare(q+1)) == q+1 );
assert( size(b.data()) == 0 && 0 == b.size());
b.commit(1);
assert( size(b.data()) == 1 && 1 == b.size());
b.commit(q-1);
assert( size(b.data()) == q && q == b.size());
b.commit(1);
assert( size(b.data()) == q+1 && q+1 == b.size());
b.consume(1);
assert( size(b.data()) == q && q == b.size());
b.consume(q-1);
assert( size(b.data()) == 1 && 1 == b.size());
assert( size(b.prepare(2*q-1)) == 2*q-1 );
b.consume(1);
assert( size(b.data()) == 0 && 0 == b.size());
b.commit(q);
assert( size(b.data()) == q && q == b.size());
b.commit(q-1);
assert( size(b.data()) == 2*q-1 && 2*q-1 == b.size());
b.consume(2*q-1);
assert( size(b.data()) == 0 && 0 == b.size());
}
void run_iterator_test()
{
StreamBuf b;
// create a sample data
boost::array<char, 20000> sample;
std::generate(sample.begin(), sample.end(),
make_randgen(boost::as_literal("0123456789")));
std::copy(sample.begin(), sample.begin() + 12000, ybuffers_begin(b.prepare(12000)));
b.commit(12000);
std::copy(sample.begin() + 12000, sample.begin() + 14000, ybuffers_begin(b.prepare(2000)));
b.commit(1000);
std::copy(sample.begin() + 13000, sample.begin() + 15000, ybuffers_begin(b.prepare(2000)));
b.commit(2000);
std::copy(sample.begin() + 15000, sample.begin() + 20000, ybuffers_begin(b.prepare(5000)));
b.commit(5000);
typename StreamBuf::const_buffers_type bufs = b.data();
assert(boost::equal(boost::make_iterator_range(sample.begin(), sample.end()),
boost::make_iterator_range(ybuffers_begin(bufs), ybuffers_end(bufs)))
);
assert(ybuffers_end(bufs) - ybuffers_begin(bufs) == 20000);
assert(ybuffers_begin(bufs) - ybuffers_end(bufs) == -20000);
}