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;
  
  import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
  import static org.junit.jupiter.api.Assumptions.assumeTrue;
  
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.openqa.selenium.testing.JupiterTestBase;
  
  class ContextSwitchingTest extends JupiterTestBase {
  
    @BeforeEach
    public void assumeBrowserIsContextAware() {
      assumeTrue(driver.switchTo() instanceof ContextAware, "Driver is not ContextAware");
    }
  
    @Test
    void testShouldNotBeAbleToSwitchContext() {
      assertThatExceptionOfType(UnsupportedCommandException.class)
          .isThrownBy(() -> ((ContextAware) driver.switchTo()).context("WEBVIEW"));
    }
  
    @Test
    void testShouldNotBeAbleToGetContextHandle() {
      assertThatExceptionOfType(UnsupportedCommandException.class)
          .isThrownBy(() -> ((ContextAware) driver.switchTo()).getContext());
    }
  
    @Test
    void testShouldNotBeAbleToGetContextHandles() {
      assertThatExceptionOfType(UnsupportedCommandException.class)
          .isThrownBy(() -> ((ContextAware) driver.switchTo()).getContextHandles());
    }
  }
  