Example of executeAsyncScript
In order to improve the performance of your test, we use the executeAsyncScript. This method allows writing test more like a normal writing a code.
The execSync blocks further actions being performed by the Selenium browser but execAsync does not block action. Once the script is done, it will send a callback to the server-side Testing suite. By this, it means everything inside the script will be executed not by the server but by the browser.
Example 1: In the browser under test., performing a sleep
In this scenario, we will use the "Facebook" demo site to illustrate executeAsyncScript. In this example, you will
Launch the browser.
Open site "https://facebook.com ".
The application waits for 5 sec to perform further action.
Step 1) Capture the start time before waiting for 5 seconds ( 5000 milliseconds) by using the executeAsyncScript() method.
Step 2) Then, use executeAsyncScript() to wait 5 seconds.
Step 3) Then, get the current time.
Step 4) Subtract (current time – start time) = passed time.
Step 5) Verify the output it should display more than 5000 milliseconds
import java.util.concurrent.TimeUnit;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.testng.annotations.Test;
public class JavaSE_Test {
@Test
public void Login()
{
WebDriver driver= new FirefoxDriver();
//Creating the JavascriptExecutor interface object by Type casting
JavascriptExecutor js = (JavascriptExecutor)driver;
//Launching the Site.
driver.get("https://facebook.com/");
//Maximize window
driver.manage().window().maximize();
//Set the Script Timeout to 20 seconds
driver.manage().timeouts().setScriptTimeout(20, TimeUnit.SECONDS);
//Declare and set the start time
long start_time = System.currentTimeMillis();
//Call executeAsyncScript() method to wait for 5 seconds
js.executeAsyncScript("window.setTimeout(arguments[arguments.length - 1], 5000);");
//Get the difference (currentTime - startTime) of times.
System.out.println("Passed time: " + (System.currentTimeMillis() - start_time));
}
}
Example of executeScript
For executeScript, we will see three different example one by one.
1) Example: Click a button to login and generate the Alert window using JavaScriptExecutor.
To illustrate JavaScriptExecutor, we will use the "Facebook" demo site in this scenario. In this example,
Launch the web browser
open the site "https://facebook.com "and
login with credentials
import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.testng.annotations.Test;
public class JavaSE_Test {
@Test
public void Login()
{
WebDriver driver= new FirefoxDriver();
//Creating the JavascriptExecutor interface object by Type casting
JavascriptExecutor js = (JavascriptExecutor)driver;
//Launching the Site.
driver.get("https://facebook.com/");
WebElement button =driver.findElement(By.name("Log In"));
//Login to Facebook
driver.findElement(By.name("email")).sendKeys("[email protected]");
driver.findElement(By.name("password")).sendKeys("yourpassword");
//Perform Click on LOGIN button using JavascriptExecutor
js.executeScript("arguments[0].click();", button);
//To generate Alert window using JavascriptExecutor. Display the alert message
js.executeScript("alert('Welcome to Facebook');");
}
}
Hope this helps!
Back