package org.apache.lucene.facet.index;
import java.io.ByteArrayInputStream;
import org.junit.Test;
import org.apache.lucene.util.LuceneTestCase;
import org.apache.lucene.facet.index.CategoryListPayloadStream;
import org.apache.lucene.util.encoding.DGapIntDecoder;
import org.apache.lucene.util.encoding.DGapIntEncoder;
import org.apache.lucene.util.encoding.IntDecoder;
import org.apache.lucene.util.encoding.NOnesIntDecoder;
import org.apache.lucene.util.encoding.NOnesIntEncoder;
import org.apache.lucene.util.encoding.UniqueValuesIntEncoder;
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
public class CategoryListPayloadStreamTest extends LuceneTestCase {
/**
* Verifies that a CategoryListPayloadStream can properly encode values into
* a byte stream for later constructing a payload.
*/
@Test
public void testStream() throws Exception {
CategoryListPayloadStream clps = new CategoryListPayloadStream(
new UniqueValuesIntEncoder(new DGapIntEncoder(
new NOnesIntEncoder(3))));
clps.appendIntToStream(1);
clps.appendIntToStream(10);
clps.appendIntToStream(100);
clps.appendIntToStream(1000);
clps.appendIntToStream(10000);
clps.appendIntToStream(100000);
clps.appendIntToStream(1000000);
clps.appendIntToStream(10000000);
clps.appendIntToStream(100000000);
clps.appendIntToStream(1000000000);
clps.appendIntToStream(Integer.MAX_VALUE);
ByteArrayInputStream bais = new ByteArrayInputStream(clps
.convertStreamToByteArray());
IntDecoder decoder = new DGapIntDecoder(new NOnesIntDecoder(3));
decoder.reInit(bais);
assertEquals("Wrong value in byte stream", 1, decoder.decode());
assertEquals("Wrong value in byte stream", 10, decoder.decode());
assertEquals("Wrong value in byte stream", 100, decoder.decode());
assertEquals("Wrong value in byte stream", 1000, decoder.decode());
assertEquals("Wrong value in byte stream", 10000, decoder.decode());
assertEquals("Wrong value in byte stream", 100000, decoder.decode());
assertEquals("Wrong value in byte stream", 1000000, decoder.decode());
assertEquals("Wrong value in byte stream", 10000000, decoder.decode());
assertEquals("Wrong value in byte stream", 100000000, decoder.decode());
assertEquals("Wrong value in byte stream", 1000000000, decoder.decode());
assertEquals("Wrong value in byte stream", Integer.MAX_VALUE, decoder.decode());
assertEquals("End of stream not reached", IntDecoder.EOS, decoder.decode());
clps.reset();
decoder.reInit(bais);
assertEquals("End of stream not reached", IntDecoder.EOS, decoder.decode());
}
}