public void testWrapGraphs() throws Exception {

    TokenStream stream = whitespaceMockTokenizer("a b c d e");

    SynonymMap sm;
    try (Analyzer analyzer = new MockAnalyzer(random())) {
      SolrSynonymParser parser = new SolrSynonymParser(true, true, analyzer);
      parser.parse(new StringReader("a b, f\nc d, g"));
      sm = parser.build();
    }

    TokenStream ts = new SkipMatchingFilter(stream, in -> new SynonymGraphFilter(in, sm, true), "c");

    assertTokenStreamContents(ts, new String[]{
        "f", "a", "b", "c", "d", "e"
        },
        null, null, null,
        new int[]{
        1, 0, 1, 1, 1, 1
        },
        new int[]{
        2, 1, 1, 1, 1, 1
        });

  }
 

@Override
public void inform( SolrCore core ) {
  if (initParams != null) {
    SolrResourceLoader resourceLoader = core.getResourceLoader( );
      
    synonymsFile = (String)initParams.get( "synonyms" );
    if (synonymsFile != null) {
      Analyzer analyzer = new Analyzer() {
      @Override
        protected TokenStreamComponents createComponents(String fieldName) {
          Tokenizer tokenizer = new KeywordTokenizer();
          return new TokenStreamComponents(tokenizer, tokenizer );
        }
      };
              
      try {
        SolrSynonymParser parser = new SolrSynonymParser(true, true, analyzer);
        CharsetDecoder decoder = StandardCharsets.UTF_8.newDecoder().onMalformedInput(CodingErrorAction.REPORT)
                                                                    .onUnmappableCharacter(CodingErrorAction.REPORT);
                  
        parser.parse(new InputStreamReader( resourceLoader.openResource(synonymsFile), decoder));
        this.synonyms = parser.build( );
      }
      catch ( Exception e ) {
        // ???
        Log.warn( "Parsing Synonyms Got Exception " + e );
      }
    }
      
    String stopwordsFile = (String)initParams.get( "stopwords" );
    if (stopwordsFile != null) {
      this.stopwords = new HashSet<String>( );
      try {
        BufferedReader br = new BufferedReader( new InputStreamReader( resourceLoader.openResource( stopwordsFile )));
        String line = null;
        while ((line = br.readLine( )) != null) {
          stopwords.add( line.toLowerCase( ) );
        }
        br.close( );
      }
      catch ( IOException ioe ) {
        Log.warn( "Adding Stopwords Got Exception " + ioe );
      }
    }
  }
    
  core.registerFirstSearcherListener( this );
  core.registerNewSearcherListener( this );
}
 

@Override
public void inform( SolrCore core ) {
  if (initParams != null) {
    SolrResourceLoader resourceLoader = core.getResourceLoader( );
      
    synonymsFile = (String)initParams.get( "synonyms" );
    if (synonymsFile != null) {
      Analyzer analyzer = new Analyzer() {
      @Override
        protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
          Tokenizer tokenizer = new KeywordTokenizer( reader );
          return new TokenStreamComponents(tokenizer, tokenizer );
        }
      };
              
      try {
        SolrSynonymParser parser = new SolrSynonymParser(true, true, analyzer);
        CharsetDecoder decoder = StandardCharsets.UTF_8.newDecoder().onMalformedInput(CodingErrorAction.REPORT)
                                                                    .onUnmappableCharacter(CodingErrorAction.REPORT);
                  
        parser.parse(new InputStreamReader( resourceLoader.openResource(synonymsFile), decoder));
        this.synonyms = parser.build( );
      }
      catch ( Exception e ) {
        // ???
        Log.warn( "Parsing Synonyms Got Exception " + e );
      }
    }
      
    String stopwordsFile = (String)initParams.get( "stopwords" );
    if (stopwordsFile != null) {
      this.stopwords = new HashSet<String>( );
      try {
        BufferedReader br = new BufferedReader( new InputStreamReader( resourceLoader.openResource( stopwordsFile )));
        String line = null;
        while ((line = br.readLine( )) != null) {
          stopwords.add( line.toLowerCase( ) );
        }
        br.close( );
      }
      catch ( IOException ioe ) {
        Log.warn( "Adding Stopwords Got Exception " + ioe );
      }
    }
  }
    
  core.registerFirstSearcherListener( this );
  core.registerNewSearcherListener( this );
}