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.openqa.selenium.testing.drivers.Browser.FIREFOX;
  import static org.openqa.selenium.testing.drivers.Browser.SAFARI;
  
  import org.junit.jupiter.api.Test;
  import org.openqa.selenium.testing.JupiterTestBase;
  import org.openqa.selenium.testing.NoDriverAfterTest;
  import org.openqa.selenium.testing.NotYetImplemented;
  
  class SessionHandlingTest extends JupiterTestBase {
  
    @NoDriverAfterTest
    @Test
    void callingQuitMoreThanOnceOnASessionIsANoOp() {
      driver.quit();
      sleepTight(3000);
      driver.quit();
    }
  
    @NoDriverAfterTest
    @Test
    @NotYetImplemented(value = FIREFOX, reason = "https://github.com/mozilla/geckodriver/issues/689")
    @NotYetImplemented(SAFARI)
    public void callingQuitAfterClosingTheLastWindowIsANoOp() {
      driver.close();
      sleepTight(3000);
      driver.quit();
    }
  
    @NoDriverAfterTest
    @Test
    void callingAnyOperationAfterClosingTheLastWindowShouldThrowAnException() {
      driver.close();
      sleepTight(3000);
      assertThatExceptionOfType(NoSuchSessionException.class).isThrownBy(driver::getCurrentUrl);
    }
  
    @NoDriverAfterTest
    @Test
    void callingAnyOperationAfterQuitShouldThrowAnException() {
      driver.quit();
      sleepTight(3000);
      assertThatExceptionOfType(NoSuchSessionException.class).isThrownBy(driver::getCurrentUrl);
    }
  
    @Test
    void shouldContinueAfterSleep() {
      sleepTight(10000);
      driver.getWindowHandle(); // should not throw
    }
  
    private void sleepTight(long duration) {
      try {
        Thread.sleep(duration);
      } catch (InterruptedException e) {
        e.printStackTrace();
      }
    }
  }
  