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.assertThat;
  import static org.openqa.selenium.testing.drivers.Browser.SAFARI;
  
  import java.util.List;
  import org.junit.jupiter.api.Test;
  import org.openqa.selenium.remote.RemoteWebElement;
  import org.openqa.selenium.testing.JupiterTestBase;
  import org.openqa.selenium.testing.NotYetImplemented;
  import org.openqa.selenium.testing.SwitchToTopAfterTest;
  
  class ElementEqualityTest extends JupiterTestBase {
  
    @Test
    void testSameElementLookedUpDifferentWaysShouldBeEqual() {
      driver.get(pages.simpleTestPage);
  
      WebElement body = driver.findElement(By.tagName("body"));
      WebElement xbody = driver.findElements(By.xpath("//body")).get(0);
  
      assertThat(xbody).isEqualTo(body);
    }
  
    @Test
    void testDifferentElementsShouldNotBeEqual() {
      driver.get(pages.simpleTestPage);
  
      List<WebElement> ps = driver.findElements(By.tagName("p"));
  
      assertThat(ps.get(0).equals(ps.get(1))).isFalse();
    }
  
    @Test
    void testSameElementLookedUpDifferentWaysUsingFindElementShouldHaveSameHashCode() {
      driver.get(pages.simpleTestPage);
      WebElement body = driver.findElement(By.tagName("body"));
      WebElement xbody = driver.findElement(By.xpath("//body"));
  
      assertThat(xbody.hashCode()).isEqualTo(body.hashCode());
    }
  
    @Test
    void testSameElementLookedUpDifferentWaysUsingFindElementsShouldHaveSameHashCode() {
      driver.get(pages.simpleTestPage);
      List<WebElement> body = driver.findElements(By.tagName("body"));
      List<WebElement> xbody = driver.findElements(By.xpath("//body"));
  
      assertThat(xbody.get(0).hashCode()).isEqualTo(body.get(0).hashCode());
    }
  
    @SwitchToTopAfterTest
    @Test
    @NotYetImplemented(SAFARI)
    public void testAnElementFoundInViaJsShouldHaveSameId() {
      driver.get(pages.missedJsReferencePage);
  
      driver.switchTo().frame("inner");
      WebElement first = driver.findElement(By.id("oneline"));
  
      WebElement element =
          (WebElement)
              ((JavascriptExecutor) driver)
                  .executeScript("return document.getElementById('oneline');");
  
      checkIdEqualityIfRemote(first, element);
    }
  
    private void checkIdEqualityIfRemote(WebElement first, WebElement second) {
      String firstId = getId(unwrapIfNecessary(first));
      String secondId = getId(unwrapIfNecessary(second));
  
      assertThat(secondId).isEqualTo(firstId);
    }
  
    private String getId(WebElement element) {
      if (!(element instanceof RemoteWebElement)) {
        System.err.println("Skipping remote element equality test - not a remote web driver");
        return null;
      }
  
      return ((RemoteWebElement) element).getId();
    }
  
    private WebElement unwrapIfNecessary(WebElement element) {
      if (element instanceof WrapsElement) {
        return ((WrapsElement) element).getWrappedElement();
      }
      return element;
    }
  }
  