/*
    * 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.plugins.changes;
  
  import java.io.IOException;
  import java.io.StringWriter;
  import java.io.Writer;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Locale;
  
  import junit.framework.TestCase;
  import org.apache.maven.plugins.changes.model.Release;
  
  /**
   * @author ltheussl
   */
  public class FeedGeneratorTest extends TestCase {
      /**
       * Test of isSupportedFeedType method, of class FeedGenerator.
       */
      public void testIsSupportedFeedType() {
          final FeedGenerator generator = new FeedGenerator(Locale.ENGLISH);
  
          assertTrue("rss_0.9 not supported?", generator.isSupportedFeedType("rss_0.9"));
          assertTrue("rss_0.91N not supported?", generator.isSupportedFeedType("rss_0.91N"));
          assertTrue("rss_0.91U not supported?", generator.isSupportedFeedType("rss_0.91U"));
          assertTrue("rss_0.92 not supported?", generator.isSupportedFeedType("rss_0.92"));
          assertTrue("rss_0.93 not supported?", generator.isSupportedFeedType("rss_0.93"));
          assertTrue("rss_0.94 not supported?", generator.isSupportedFeedType("rss_0.94"));
          assertTrue("rss_1.0 not supported?", generator.isSupportedFeedType("rss_1.0"));
          assertTrue("rss_2.0 not supported?", generator.isSupportedFeedType("rss_2.0"));
          assertTrue("atom_0.3 not supported?", generator.isSupportedFeedType("atom_0.3"));
          assertTrue("atom_1.0 not supported?", generator.isSupportedFeedType("atom_1.0"));
  
          assertFalse(generator.isSupportedFeedType(""));
          assertFalse(generator.isSupportedFeedType(null));
          assertFalse(generator.isSupportedFeedType("rss"));
      }
  
      /**
       * Test of export method, of class FeedGenerator.
       *
       * @throws Exception if any.
       */
      public void testExport() throws Exception {
          final FeedGenerator generator = new FeedGenerator(Locale.ENGLISH);
          generator.setAuthor("author");
          generator.setTitle("title");
          generator.setLink("url");
          generator.setDateFormat(null);
  
          Release release = new Release();
          release.setVersion("1.0");
          List<Release> releases = new ArrayList<>(1);
  
          try {
              // test with no release: should fail
              generator.export(releases, "rss_0.9", new StringWriter(512));
              fail("0 releases not allowed!");
          } catch (IOException ex) {
              assertNotNull(ex.getMessage());
          }
  
          releases.add(release);
  
          for (String type : generator.getSupportedFeedTypes()) {
              try (Writer writer = new StringWriter(512)) {
                  generator.export(releases, type, writer);
                  String result = writer.toString(); // TODO: save for inspection?
                  assertNotNull(result);
                  assertTrue(result.length() > 0);
              }
          }
      }
  }