TestGenericObjectMapper.java 文件源码

private static void testEncoding(long l) {
  byte[] b = GenericObjectMapper.writeReverseOrderedLong(l);
  assertEquals("error decoding", l,
      GenericObjectMapper.readReverseOrderedLong(b, 0));
  byte[] buf = new byte[16];
  System.arraycopy(b, 0, buf, 5, 8);
  assertEquals("error decoding at offset", l,
      GenericObjectMapper.readReverseOrderedLong(buf, 5));
  if (l > Long.MIN_VALUE) {
    byte[] a = GenericObjectMapper.writeReverseOrderedLong(l-1);
    assertEquals("error preserving ordering", 1,
        WritableComparator.compareBytes(a, 0, a.length, b, 0, b.length));
  }
  if (l < Long.MAX_VALUE) {
    byte[] c = GenericObjectMapper.writeReverseOrderedLong(l+1);
    assertEquals("error preserving ordering", 1,
        WritableComparator.compareBytes(b, 0, b.length, c, 0, c.length));
  }
}