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 * 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
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package org.elasticsearch.index.analysis;

import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.core.WhitespaceTokenizer;
import org.elasticsearch.test.ElasticsearchTokenStreamTestCase;
import org.junit.Test;

import java.io.IOException;
import java.io.StringReader;

import static org.elasticsearch.common.settings.ImmutableSettings.settingsBuilder;

public class ASCIIFoldingTokenFilterFactoryTests extends ElasticsearchTokenStreamTestCase {
    @Test
    public void testDefault() throws IOException {
        AnalysisService analysisService = AnalysisTestsHelper.createAnalysisServiceFromSettings(settingsBuilder()
                .put("index.analysis.filter.my_ascii_folding.type", "asciifolding")
                .build());
        TokenFilterFactory tokenFilter = analysisService.tokenFilter("my_ascii_folding");
        String source = "Ansprüche";
        String[] expected = new String[]{"Anspruche"};
        Tokenizer tokenizer = new WhitespaceTokenizer(TEST_VERSION_CURRENT, new StringReader(source));
        assertTokenStreamContents(tokenFilter.create(tokenizer), expected);
    }

    @Test
    public void testPreserveOriginal() throws IOException {
        AnalysisService analysisService = AnalysisTestsHelper.createAnalysisServiceFromSettings(settingsBuilder()
                .put("index.analysis.filter.my_ascii_folding.type", "asciifolding")
                .put("index.analysis.filter.my_ascii_folding.preserve_original", true)
                .build());
        TokenFilterFactory tokenFilter = analysisService.tokenFilter("my_ascii_folding");
        String source = "Ansprüche";
        String[] expected = new String[]{"Anspruche", "Ansprüche"};
        Tokenizer tokenizer = new WhitespaceTokenizer(TEST_VERSION_CURRENT, new StringReader(source));
        assertTokenStreamContents(tokenFilter.create(tokenizer), expected);
    }

}
