BitSetIndexToIndexMultiMapTest.java 文件源码

private IndexToIndexMultiMap build() throws IOException {
    final TreeMultimap<Integer, Integer> elements = TreeMultimap.create();
    for (int i = 0; i < DOCS; i++) {
        elements.put(i / 2, i);
    }
    final com.yandex.yoctodb.util.mutable.IndexToIndexMultiMap mutable =
            new com.yandex.yoctodb.util.mutable.impl.BitSetIndexToIndexMultiMap(
                    elements.asMap().values(),
                    DOCS);

    final ByteArrayOutputStream baos = new ByteArrayOutputStream();
    mutable.writeTo(baos);

    final Buffer buf = Buffer.from(baos.toByteArray());

    assertEquals(
            V1DatabaseFormat.MultiMapType.LONG_ARRAY_BIT_SET_BASED.getCode(),
            buf.getInt());

    final IndexToIndexMultiMap result =
            BitSetIndexToIndexMultiMap.from(buf);

    assertEquals(DOCS / 2, result.getKeysCount());

    return result;
}