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;
  
  import static java.util.Collections.singletonMap;
  import static org.assertj.core.api.Assertions.assertThat;
  import static org.openqa.selenium.remote.Dialect.W3C;
  
  import java.util.UUID;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Tag;
  import org.junit.jupiter.api.Test;
  import org.openqa.selenium.Capabilities;
  import org.openqa.selenium.ImmutableCapabilities;
  import org.openqa.selenium.SearchContext;
  
  @Tag("UnitTests")
  class JsonToWebElementConverterTest {
  
    private RemoteWebDriver driver;
  
    @BeforeEach
    public void createIdleDriver() {
      driver =
          new RemoteWebDriver(cmd -> new Response(), new ImmutableCapabilities()) {
            @Override
            protected void startSession(Capabilities capabilities) {
              // Do nothing
            }
          };
    }
  
    @Test
    void shouldConvertShadowRootsToSearchContexts() {
      UUID rootId = UUID.randomUUID();
  
      Object result =
          new JsonToWebElementConverter(driver)
              .apply(singletonMap(W3C.getShadowRootElementKey(), rootId.toString()));
  
      assertThat(result).isInstanceOf(SearchContext.class);
    }
  }
  