/*
    * 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.
   */
  package org.apache.maven.index.context;
  
  import java.io.IOException;
  import java.io.StringReader;
  import java.util.ArrayList;
  import java.util.Arrays;
  
  import org.apache.lucene.analysis.TokenStream;
  import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
  import org.apache.maven.index.IndexerField;
  import org.apache.maven.index.creator.MinimalArtifactInfoIndexCreator;
  import org.junit.Test;
  
  import static org.junit.Assert.assertEquals;
  
  public class NexusAnalyzerTest {
      protected NexusAnalyzer nexusAnalyzer = new NexusAnalyzer();
  
      @Test
      public void testGroupIdTokenization() throws IOException {
          runAndCompare(MinimalArtifactInfoIndexCreator.FLD_GROUP_ID, "org.slf4j", new String[] {"org", "slf4j"});
  
          runAndCompare(MinimalArtifactInfoIndexCreator.FLD_GROUP_ID_KW, "org.slf4j", new String[] {"org.slf4j"});
      }
  
      protected void runAndCompare(IndexerField indexerField, String text, String[] expected) throws IOException {
          TokenStream ts = nexusAnalyzer.tokenStream(indexerField.getKey(), new StringReader(text));
          ts.reset();
  
          ArrayList<String> tokenList = new ArrayList<>();
  
          if (!indexerField.isKeyword()) {
              while (ts.incrementToken()) {
                  CharTermAttribute term = ts.addAttribute(CharTermAttribute.class);
                  tokenList.add(term.toString());
              }
          } else {
              tokenList.add(text);
          }
  
          assertEquals("The result does not meet the expectations.", Arrays.asList(expected), tokenList);
      }
  }