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package org.elasticsearch.mapper.attachments;

/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch 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.
 */

import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;

import org.apache.lucene.util.LuceneTestCase.SuppressFileSystems;
import org.apache.lucene.util.TestUtil;
import org.apache.tika.metadata.Metadata;

import org.elasticsearch.test.ESTestCase;

/** 
 * Evil test-coverage cheat, we parse a bunch of docs from tika
 * so that we have a nice grab-bag variety, and assert some content
 * comes back and no exception.
 */
@SuppressFileSystems("ExtrasFS") // don't try to parse extraN
public class TikaDocTests extends ESTestCase {

    /** some test files from tika test suite, zipped up */
    static final String TIKA_FILES = "/org/elasticsearch/index/mapper/attachment/test/tika-files.zip";

    public void testFiles() throws Exception {
        Path tmp = createTempDir();
        TestUtil.unzip(getClass().getResourceAsStream(TIKA_FILES), tmp);
        
        try (DirectoryStream<Path> stream = Files.newDirectoryStream(tmp)) {
            for (Path doc : stream) {
              logger.debug("parsing: {}", doc);
              assertParseable(doc);
            }
        }
    }
    
    void assertParseable(Path fileName) throws Exception {
        try {
            byte bytes[] = Files.readAllBytes(fileName);
            String parsedContent = TikaImpl.parse(bytes, new Metadata(), -1);
            assertNotNull(parsedContent);
            assertFalse(parsedContent.isEmpty());
            logger.debug("extracted content: {}", parsedContent);
        } catch (Throwable e) {
            throw new RuntimeException("parsing of filename: " + fileName.getFileName() + " failed", e);  
        }
    }
}