sf.write(wrapBuffer(bytes1), true);
long bytesWritten = sf.position() - initialPos;
Assert.assertEquals(calculateRecordSize(bytes1.length, sf.getAlignment()), bytesWritten);
initialPos = sf.position();
sf.write(wrapBuffer(bytes2), true);
bytesWritten = sf.position() - initialPos;
Assert.assertEquals(calculateRecordSize(bytes2.length, sf.getAlignment()), bytesWritten);