code: // Licensed to the Software Freedom Conservancy (SFC) under one
  // or more contributor license agreements.  See the NOTICE file
  // distributed with this work for additional information
  // regarding copyright ownership.  The SFC 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.openqa.selenium.grid.web;
  
  import static org.assertj.core.api.Assertions.assertThat;
  
  import com.google.common.collect.ImmutableSet;
  import java.net.URL;
  import java.util.Optional;
  import java.util.Set;
  import java.util.stream.Collectors;
  import org.junit.jupiter.api.Test;
  
  class ClassPathResourceTest {
  
    @Test
    void shouldGetASingleFile() {
      URL res = getClass().getResource("/test/org/openqa/selenium/grid/web");
      assertThat(res).isNotNull();
  
      Resource resource = new ClassPathResource(res, "test/org/openqa/selenium/grid/web");
      assertThat(resource.isDirectory()).isTrue();
  
      Optional<Resource> found = resource.get("packaged-file.txt");
      assertThat(found).isPresent();
    }
  
    @Test
    void shouldComplainIfResourceDoesNotExist() {}
  
    @Test
    void shouldReportDirectoriesAsDirectories() {}
  
    @Test
    void shouldListContentsOfDirectoriesIfInSameJar() {
      URL res = getClass().getResource("/test/org/openqa/selenium/grid/web");
      assertThat(res).isNotNull();
  
      Resource resource = new ClassPathResource(res, "test/org/openqa/selenium/grid/web");
      assertThat(resource.isDirectory()).isTrue();
  
      Set<String> names = resource.list().stream().map(Resource::name).collect(Collectors.toSet());
  
      assertThat(names).isEqualTo(ImmutableSet.of("packaged-file.txt"));
    }
  }
  