/*
    * 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                 *
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   * 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.rat.walker;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import java.io.File;
  import java.io.FileWriter;
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.commons.io.filefilter.FalseFileFilter;
  import org.apache.rat.api.Document;
  import org.apache.rat.api.RatException;
  import org.apache.rat.report.RatReport;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.io.TempDir;
  
  public class DirectoryWalkerTest {
      
      @TempDir
  	private File toWalk;
      
      @Test
      public void walk() throws IOException, RatException {
          File regular = new File(toWalk, "regular");
          regular.mkdir();
          File regularFile = new File(regular, "test");
          try (FileWriter writer = new FileWriter(regularFile)) {
              writer.write("test");
              writer.flush();
          }
  
          File hidden = new File(toWalk, ".hidden");
          hidden.mkdir();
          File hiddenFile = new File(hidden, "test");
  
          try (FileWriter writer = new FileWriter(hiddenFile)) {
              writer.write("test");
              writer.flush();
          }
  
          DirectoryWalker walker = new DirectoryWalker(toWalk, NameBasedHiddenFileFilter.HIDDEN);
          List<String> scanned = new ArrayList<>();
          walker.run(new TestRatReport(scanned));
  
          assertEquals(1, scanned.size());
  
          walker = new DirectoryWalker(toWalk, FalseFileFilter.FALSE);
          scanned = new ArrayList<>();
          walker.run(new TestRatReport(scanned));
  
          assertEquals(2, scanned.size());
      }
  
      class TestRatReport implements RatReport {
  
          private List<String> scanned;
  
          public TestRatReport(List<String> scanned) {
              this.scanned = scanned;
          }
  
          @Override
          public void startReport() {
              // no-op
          }
  
          @Override
          public void report(Document document) throws RatException {
              scanned.add(document.getName());
          }
  
          @Override
          public void endReport() {
              // no-op
          }
  
      }
  
  }