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.remote.http;
  
  import static java.util.Collections.singletonList;
  import static org.assertj.core.api.Assertions.assertThat;
  import static org.openqa.selenium.remote.http.HttpMethod.GET;
  import static org.openqa.selenium.remote.http.UrlPath.ROUTE_PREFIX_KEY;
  
  import org.junit.jupiter.api.Tag;
  import org.junit.jupiter.api.Test;
  
  @Tag("UnitTests")
  class UrlPathTest {
  
    @Test
    void shouldAssumeARegularHttpRequestHasNoPrefix() {
      HttpRequest req = new HttpRequest(GET, "/cheese");
  
      String absolute = UrlPath.relativeToServer(req, "/cake");
      assertThat(absolute).isEqualTo("/cake");
  
      String relative = UrlPath.relativeToContext(req, "/cake");
      assertThat(relative).isEqualTo("/cake");
    }
  
    @Test
    void shouldRedirectARequestWithAPrefixAttribute() {
      HttpRequest req = new HttpRequest(GET, "/cake");
      req.setAttribute(ROUTE_PREFIX_KEY, singletonList("/cheese"));
  
      String absolute = UrlPath.relativeToServer(req, "/cake");
      assertThat(absolute).isEqualTo("/cake");
  
      String relative = UrlPath.relativeToContext(req, "/cake");
      assertThat(relative).isEqualTo("/cheese/cake");
    }
  }
  