package org.apache.lucene.facet.index.streaming;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Set;
import org.junit.Test;
import org.apache.lucene.facet.index.CategoryContainerTestBase;
import org.apache.lucene.facet.index.attributes.CategoryAttribute;
import org.apache.lucene.facet.index.attributes.CategoryAttributeImpl;
import org.apache.lucene.facet.index.streaming.CategoryAttributesStream;
import org.apache.lucene.facet.taxonomy.CategoryPath;
/**
* 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 CategoryAttributesStreamTest extends CategoryContainerTestBase {
/**
* Verifies that a {@link CategoryAttributesStream} accepts
* {@link CategoryAttribute} and passes them on as tokens.
*
* @throws IOException
*/
@Test
public void testStream() throws IOException {
ArrayList<CategoryAttribute> attributesList = new ArrayList<CategoryAttribute>();
for (int i = 0; i < initialCatgeories.length; i++) {
attributesList.add(new CategoryAttributeImpl(initialCatgeories[i]));
}
// test number of tokens
CategoryAttributesStream stream = new CategoryAttributesStream(
attributesList);
int nTokens = 0;
while (stream.incrementToken()) {
nTokens++;
}
assertEquals("Wrong number of tokens", 3, nTokens);
// test reset
stream.reset();
nTokens = 0;
while (stream.incrementToken()) {
nTokens++;
}
assertEquals("Wrong number of tokens", 3, nTokens);
// test reset and contents
Set<CategoryPath> pathsSet = new HashSet<CategoryPath>();
for (int i = 0; i < initialCatgeories.length; i++) {
pathsSet.add(initialCatgeories[i]);
}
stream.reset();
while (stream.incrementToken()) {
CategoryAttribute fromStream = stream
.getAttribute(CategoryAttribute.class);
if (!pathsSet.remove(fromStream.getCategoryPath())) {
fail("Unexpected category path: "
+ fromStream.getCategoryPath().toString(':'));
}
}
assertTrue("all category paths should have been found", pathsSet
.isEmpty());
}
}