code: /**
   * This file is part of Eclipse Steady.
   *
   * Licensed 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.
   *
   * SPDX-License-Identifier: Apache-2.0
   * SPDX-FileCopyrightText: Copyright (c) 2018-2020 SAP SE or an SAP affiliate company and Eclipse Steady contributors
   */
  package org.eclipse.steady.shared.util;
  
  import static org.junit.Assert.assertEquals;
  
  import java.io.File;
  import java.nio.file.Path;
  import java.nio.file.Paths;
  import java.util.HashSet;
  import java.util.Set;
  
  import org.junit.Test;
  
  public class DirUtilTest {
  
    @Test
    public void testFilterSubpaths() {
      final Path p1 = Paths.get("./src/test/resources/foo/bar/empty.txt");
      final Path p2 = Paths.get("./src/test/resources/foo/bar");
      final Path p3 = Paths.get("./src/test/resources/foo");
      final Path p4 = Paths.get("./src/test/resources/foo/empty");
  
      final Set<Path> filter = new HashSet<Path>();
      filter.add(p2);
      final Set<Path> to_be_filtered = new HashSet<Path>();
      to_be_filtered.add(p1);
      to_be_filtered.add(p3);
      to_be_filtered.add(p4);
  
      final Set<Path> r1 = DirUtil.filterSubpaths(to_be_filtered, filter, true);
      assertEquals(1, r1.size());
  
      final Set<Path> r2 = DirUtil.filterSubpaths(to_be_filtered, filter, false);
      assertEquals(2, r2.size());
    }
  
    @Test
    public void testGetAllFiles() {
      final File[] f1 = DirUtil.getAllFiles(new File("./src/test/resources/foo"), null);
      assertEquals(4, f1.length);
  
      final File[] f2 =
          DirUtil.getAllFiles(new File("./src/test/resources/foo"), new String[] {"bar"});
      assertEquals(3, f2.length);
  
      final File[] f3 =
          DirUtil.getAllFiles(new File("./src/test/resources/foo"), new String[] {"bar", "baz"});
      assertEquals(2, f3.length);
    }
  }
  