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.safari;
  
  import static org.assertj.core.api.Assertions.assertThat;
  import static org.openqa.selenium.testing.drivers.Browser.SAFARI;
  
  import org.junit.jupiter.api.Test;
  import org.openqa.selenium.By;
  import org.openqa.selenium.Cookie;
  import org.openqa.selenium.JavascriptExecutor;
  import org.openqa.selenium.testing.Ignore;
  import org.openqa.selenium.testing.JupiterTestBase;
  import org.openqa.selenium.testing.NoDriverAfterTest;
  import org.openqa.selenium.testing.NoDriverBeforeTest;
  
  class CleanSessionTest extends JupiterTestBase {
  
    private static final Cookie COOKIE = new Cookie("foo", "bar");
  
    @Test
    @NoDriverBeforeTest
    public void shouldClearCookiesWhenStartingWithACleanSession() {
      SafariDriver firstDriver = new SafariDriver();
      firstDriver.get(pages.alertsPage);
  
      assertThat(firstDriver.manage().getCookies()).isEmpty();
  
      firstDriver.manage().addCookie(COOKIE);
      assertThat(firstDriver.manage().getCookies()).contains(COOKIE);
      firstDriver.quit();
  
      localDriver = new SafariDriver();
      localDriver.get(pages.alertsPage);
      assertThat(localDriver.manage().getCookies()).isEmpty();
    }
  
    @Test
    @NoDriverAfterTest
    public void isResilientToPagesRedefiningDependentDomFunctions() {
      runFunctionRedefinitionTest("window.dispatchEvent = function() {};");
      runFunctionRedefinitionTest("window.postMessage = function() {};");
      runFunctionRedefinitionTest("document.createEvent = function() {};");
      runFunctionRedefinitionTest("document.documentElement.setAttribute = function() {};");
      runFunctionRedefinitionTest("document.documentElement.getAttribute = function() {};");
      runFunctionRedefinitionTest("document.documentElement.removeAttribute = function() {};");
    }
  
    private void runFunctionRedefinitionTest(String script) {
      driver.get(appServer.whereIs("messages.html"));
  
      JavascriptExecutor executor = (JavascriptExecutor) driver;
      executor.executeScript(script);
  
      // If the above actually returns, then we are good to go.
    }
  
    @Test
    @NoDriverAfterTest
    @Ignore(SAFARI)
    public void executeAsyncScriptIsResilientToPagesRedefiningSetTimeout() {
      driver.get(appServer.whereIs("messages.html"));
  
      JavascriptExecutor executor = (JavascriptExecutor) driver;
      executor.executeScript("setTimeout = function() {}");
  
      long result =
          (Long)
              executor.executeAsyncScript(
                  "var callback = arguments[arguments.length - 1];"
                      + "window.constructor.prototype.setTimeout.call(window, function() {"
                      + "callback(123);\n}, 0);");
  
      assertThat(result).isEqualTo(123L);
    }
  
    @Test
    void doesNotLeakInternalMessagesToThePageUnderTest() {
      driver.get(appServer.whereIs("messages.html"));
  
      JavascriptExecutor executor = (JavascriptExecutor) driver;
      executor.executeScript("window.postMessage('hi', '*');");
  
      long numMessages = (Long) executor.executeScript("return window.messages.length;");
  
      assertThat(numMessages).isEqualTo(1L);
    }
  
    @Test
    void doesNotCreateExtraIframeOnPageUnderTest() {
      driver.get(appServer.whereIs("messages.html"));
      assertThat(driver.findElements(By.tagName("iframe"))).isEmpty();
  
      ((JavascriptExecutor) driver).executeScript("return location.href;");
      assertThat(driver.findElements(By.tagName("iframe"))).isEmpty();
    }
  }
  