/*
    * 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.commons.compress.utils;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNull;
  
  import java.io.File;
  import java.nio.file.Path;
  import java.nio.file.Paths;
  
  import org.apache.commons.lang3.SystemUtils;
  import org.junit.jupiter.api.Test;
  
  public class FileNameUtilsTest {
  
      @Test
      public void testGetBaseNamePathBaseCases() {
          assertEquals("bar", FileNameUtils.getBaseName(Paths.get("a/b/c/bar.foo")));
          assertEquals("foo", FileNameUtils.getBaseName(Paths.get("foo")));
          assertEquals("", FileNameUtils.getBaseName(Paths.get("")));
          assertEquals("", FileNameUtils.getBaseName(Paths.get(".")));
          for (final File f : File.listRoots()) {
              assertNull(FileNameUtils.getBaseName(f.toPath()));
          }
          if (SystemUtils.IS_OS_WINDOWS) {
              assertNull(FileNameUtils.getBaseName(Paths.get("C:\\")));
          }
      }
  
      @Test
      public void testGetBaseNamePathCornerCases() {
          assertNull(FileNameUtils.getBaseName((Path) null));
          assertEquals("foo", FileNameUtils.getBaseName(Paths.get("foo.")));
          assertEquals("", FileNameUtils.getBaseName(Paths.get("bar/.foo")));
      }
  
      @Test
      public void testGetBaseNameStringBaseCases() {
          assertEquals("bar", FileNameUtils.getBaseName("a/b/c/bar.foo"));
          assertEquals("foo", FileNameUtils.getBaseName("foo"));
      }
  
      @Test
      public void testGetBaseNameStringCornerCases() {
          assertNull(FileNameUtils.getBaseName((String) null));
          assertEquals("foo", FileNameUtils.getBaseName("foo."));
          assertEquals("", FileNameUtils.getBaseName("bar/.foo"));
      }
  
      @Test
      public void testGetExtensionPathBaseCases() {
          assertEquals("foo", FileNameUtils.getExtension(Paths.get("a/b/c/bar.foo")));
          assertEquals("", FileNameUtils.getExtension(Paths.get("foo")));
          assertEquals("", FileNameUtils.getExtension(Paths.get("")));
          assertEquals("", FileNameUtils.getExtension(Paths.get(".")));
          for (final File f : File.listRoots()) {
              assertNull(FileNameUtils.getExtension(f.toPath()));
          }
          if (SystemUtils.IS_OS_WINDOWS) {
              assertNull(FileNameUtils.getExtension(Paths.get("C:\\")));
          }
      }
  
      @Test
      public void testGetExtensionPathCornerCases() {
          assertNull(FileNameUtils.getExtension((String) null));
          assertEquals("", FileNameUtils.getExtension(Paths.get("foo.")));
          assertEquals("foo", FileNameUtils.getExtension(Paths.get("bar/.foo")));
      }
  
      @Test
      public void testGetExtensionStringBaseCases() {
          assertEquals("foo", FileNameUtils.getExtension("a/b/c/bar.foo"));
          assertEquals("", FileNameUtils.getExtension("foo"));
      }
  
      @Test
      public void testGetExtensionStringCornerCases() {
          assertNull(FileNameUtils.getExtension((String) null));
          assertEquals("", FileNameUtils.getExtension("foo."));
          assertEquals("foo", FileNameUtils.getExtension("bar/.foo"));
      }
  }