public void runSeekTest(CompressionCodec codec)
{
TestInStream.OutputCollector collect = new TestInStream.OutputCollector();
RunLengthIntegerWriter @out = new RunLengthIntegerWriter(
new OutStream("test", 1000, codec, collect), true);
TestInStream.PositionCollector[] positions =
new TestInStream.PositionCollector[4096];
Random random = new Random(99);
int[] junk = new int[2048];
for (int i = 0; i < junk.Length; ++i)
{
junk[i] = random.Next();
}
for (int i = 0; i < 4096; ++i)
{
positions[i] = new TestInStream.PositionCollector();
@out.getPosition(positions[i]);
// test runs, incrementing runs, non-runs
if (i < 1024)
{
@out.write(i / 4);
}
else if (i < 2048)
{
@out.write(2 * i);
}
else
{
@out.write(junk[i - 2048]);
}
}
@out.flush();
ByteBuffer inBuf = ByteBuffer.allocate(collect.buffer.size());
collect.buffer.setByteBuffer(inBuf, 0, collect.buffer.size());
inBuf.flip();
#pragma warning disable 612
RunLengthIntegerReader @in = new RunLengthIntegerReader(InStream.create
(null, "test", new ByteBuffer[] { inBuf }, new long[] { 0 }, inBuf.remaining(),
codec, 1000), true);
#pragma warning restore 612
for (int i = 0; i < 2048; ++i)
{
int x = (int)@in.next();
if (i < 1024)
{
Assert.Equal(i / 4, x);
}
else if (i < 2048)
{
Assert.Equal(2 * i, x);
}
else
{
Assert.Equal(junk[i - 2048], x);
}
}
for (int i = 2047; i >= 0; --i)
{
@in.seek(positions[i]);
int x = (int)@in.next();
if (i < 1024)
{
Assert.Equal(i / 4, x);
}
else if (i < 2048)
{
Assert.Equal(2 * i, x);
}
else
{
Assert.Equal(junk[i - 2048], x);
}
}
}
public void testSkips()
{
TestInStream.OutputCollector collect = new TestInStream.OutputCollector();
RunLengthIntegerWriter @out = new RunLengthIntegerWriter(
new OutStream("test", 100, null, collect), true);
for (int i = 0; i < 2048; ++i)
{
if (i < 1024)
{
@out.write(i);
}
else
{
@out.write(256 * i);
}
}
@out.flush();
ByteBuffer inBuf = ByteBuffer.allocate(collect.buffer.size());
collect.buffer.setByteBuffer(inBuf, 0, collect.buffer.size());
inBuf.flip();
#pragma warning disable 612
RunLengthIntegerReader @in = new RunLengthIntegerReader(InStream.create
(null, "test", new ByteBuffer[] { inBuf }, new long[] { 0 }, inBuf.remaining(),
null, 100), true);
#pragma warning restore 612
for (int i = 0; i < 2048; i += 10)
{
int x = (int)@in.next();
if (i < 1024)
{
Assert.Equal(i, x);
}
else
{
Assert.Equal(256 * i, x);
}
if (i < 2038)
{
@in.skip(9);
}
@in.skip(0);
}
}