Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Wait for an Ajax call to complete with Selenium 2 WebDriver.
We can wait for an Ajax call to complete with Selenium webdriver. The determination of the load time of the page due to an Ajax response is a difficult task. This can be achieved with the help of synchronization concepts and wait methods in Selenium. Some of them are listed below −
Implicit wait − It allows the web driver to wait for the time specified after which exception is thrown. This wait is applicable to all steps in the test.
Syntax
driver.manage().timeouts().implicitlyWait(5, TimeUnit.SECONDS);
Example
Code Implementation with implicit wait.
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import java.util.concurrent.TimeUnit;
public class AjaxImplWt{
public static void main(String[] args) {
System.setProperty("webdriver.chrome.driver",
"C:\Users\ghs6kor\Desktop\Java\chromedriver.exe");
WebDriver driver = new ChromeDriver();
// wait for page load
driver.manage().timeouts().implicitlyWait(5, TimeUnit.SECONDS);
driver.get("https://www.tutorialspoint.com/index.htm");
// identify element
WebElement e=driver.findElement(By.className("gsc-input"));
e.sendKeys("Java");
driver.close();
}
}Ajax response call can also be handled with explicit wait. This wait is applied to a particular element. The wait for the specified time is done for some expected condition for an element. Exception is thrown, once the wait time has elapsed.
Example
Code Implementation with explicit wait.
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import java.util.concurrent.TimeUnit;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;
public class AjaxWaitExplicit{
public static void main(String[] args)
throws InterruptedException{
System.setProperty("webdriver.chrome.driver",
"C:\Users\ghs6kor\Desktop\Java\chromedriver.exe");
WebDriver driver = new ChromeDriver();
driver.get("https://www.tutorialspoint.com/index.htm");
// identify element
WebElement l=driver.findElement(By.xpath("//*[text()='Library']"));
l.click();
//explicit wait condition
WebDriverWait wt = new WebDriverWait(driver,5);
wt.until(ExpectedConditions.
invisibilityOfElementLocated(By.xpath("//*[@class='mui-btn']")));
driver.quit();
}
}We can also add custom ExpectedConditions for Selenium. We need custom ExpectedConditions when the default expected conditions provided by webdriver are not enough. The method until is used which is a part of the WebDriverWait class.
Example
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import java.util.concurrent.TimeUnit;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;
public class AjaxCustomExpCondition{
public static void main(String[] args)
throws InterruptedException{
System.setProperty("webdriver.chrome.driver",
"C:\Users\ghs6kor\Desktop\Java\chromedriver.exe");
WebDriver driver = new ChromeDriver();
driver.manage().timeouts().implicitlyWait(4, TimeUnit.SECONDS);
driver.get("https://www.tutorialspoint.com/about/about_careers.htm");
// identify element
WebElement l=driver.findElement(By.linkText("Team"));
l.click();
//object of WebDriverWait class
WebDriverWait w = new WebDriverWait(driver,7);
//custom expected condition with until method
w.until(new ExpectedCondition <Boolean> (){
public Boolean apply(WebDriver driver) {
//identify paragraph
WebElement e= driver.findElement(By.tagName("p"));
if (e!= null){
//to check if paragraph is displayed and has text India
if (e.isDisplayed() && e.getText().contains("India")) {
System.out.println("Element found");
return true;
} else {
System.out.println("Element not found");
return false;
}
}
return false;
}
});
driver.close();
}
}Moreover, the JavaScript Executor can be used to wait for an Ajax call. The executeScript method is used to run a JavaScript command in Selenium. The waiting is done till jQuery.active command yields 0.
Example
Code Implementation with JavaScript.
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.JavascriptExecutor;
public class AjaxJavaScrptWt{
public static void main(String[] args) {
System.setProperty("webdriver.chrome.driver",
"C:\Users\ghs6kor\Desktop\Java\chromedriver.exe");
WebDriver driver = new ChromeDriver();
driver.get("https://www.tutorialspoint.com/index.htm");
//wait with JavaScript Executor
while (true){
if ((Boolean) ((JavascriptExecutor)driver).
.executeScript("return jQuery.active == 0")){
break;
}
Thread.sleep(500);
}
}
}
1K+ Views
