/*
    * 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.any23.vocab;
  
  import org.apache.any23.util.StringUtils;
  import org.junit.Assert;
  import org.junit.Test;
  import org.eclipse.rdf4j.rio.RDFFormat;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.io.ByteArrayOutputStream;
  import java.io.PrintStream;
  import java.nio.charset.StandardCharsets;
  
  /**
   * Test case for {@link RDFSchemaUtils}.
   *
   * @author Michele Mostarda (mostarda@fbk.eu)
   */
  public class RDFSchemaUtilsTest {
  
      private static final Logger logger = LoggerFactory.getLogger(RDFSchemaUtilsTest.class);
  
      /**
       * Test case for {@link RDFSchemaUtils#serializeVocabularies( org.eclipse.rdf4j.rio.RDFFormat, java.io.PrintStream)}
       * with <i>NTriples</i> format.
       */
      @Test
      public void testSerializeVocabulariesNTriples() {
          serializeVocabularies(RDFFormat.NTRIPLES, 2178);
      }
  
      /**
       * Test case for {@link RDFSchemaUtils#serializeVocabularies( org.eclipse.rdf4j.rio.RDFFormat, java.io.PrintStream)}
       * with <i>RDFXML</i> format.
       */
      @Test
      public void testSerializeVocabulariesRDFXML() {
          serializeVocabularies(RDFFormat.RDFXML, 5709); // Effective lines + separators.
      }
  
      private void serializeVocabularies(RDFFormat format, int expectedLines) {
          final ByteArrayOutputStream baos = new ByteArrayOutputStream();
          try (PrintStream ps = new PrintStream(baos, true, StandardCharsets.UTF_8)) {
              RDFSchemaUtils.serializeVocabularies(format, ps);
          }
          final String output = baos.toString(StandardCharsets.UTF_8);
          logger.debug(output);
          final int occurrences = StringUtils.countOccurrences(output, "\n");
          Assert.assertEquals(expectedLines, occurrences);
      }
  
  }