How to check if refresh page event occurs or not after an UI event (ex. click on a button)

Question

Got the following code:

 driver.findElement(By.id("input_search")).click();
 driver.findElement(By.id("input_search")).clear();
 if(lower3 == true){
    //read a line from a doc 
    document_path = "C:\\MyProject\\src\\harness\\lower_than_3" 
    FileInputStream fis = new FileInputStream(document_path);  
    BufferedReader br = new BufferedReader(new InputStreamReader(fis));         
    while((line = br.readLine()) != null){
        //line is inserted into search field
        driver.findElement(By.id("input_search")).sendKeys(line);
        Thread.sleep(100);     

       //press search button- page should NOT refresh if string length for search is lower than three, NO search is performed
       driver.findElement(By.cssSelector("div.btn-img.submit")).click();

       //ASSERT OR VERIFY IF PAGE IS RELOADED OR NOT AFTER CLICK ON SEARCH BUTTON
       NEED HELP         
    }
    br.close();   
 }

After search click on search buton is executed (line 15 from code region) I want to check if page refresh event occurs. I DON'T WANT TO REFRESH PAGE (there are so mane examples with that :) ) I JUST WANT TO CHECK IF PAGE IS REFRESHED OR NOT

It is better if you could check the element after search action performed instead of checking page is refreshed or not. — Abhishek Yadav, May 01 '14 at 12:30
Agree with @AbhishekYadav, you'd be better off checking a condition on the page, is there any validation messages presented when the search string is < 3 characters? If so, you should assert that that message is present — Steve Weaver Crawford, May 01 '14 at 16:48
@Steve Crawford and Abhishek Yadav - there are no messages and no changes on the page also no refresh event if search string is < 3 characters. I just want to try this for learning purposes. I did not found any solutions to this on internet. I know a few methods to refresh the page but I did not identified any method to check this event. In your opinion (both of you) if I would check for an interval of 10 seconds if an element (present only on root page of the site) can take click action or is present on page could be a valid condition to check that no refresh event took place. — vasilev21, May 01 '14 at 20:12
I guess that would work, but it's not ideal. Before searching do a findElement to get an element on the page. After searching if the page has refreshed you will get a StaleElementException if you try to click on it. If the page has not refreshed the click will be successful — Steve Weaver Crawford, May 01 '14 at 20:21

score 3 · Accepted Answer · answered May 02 '14 at 06:30

You can use any of these to solve your purpose:

Solution 1: Verify an element after search action performed.

driver.findElement(By.id("input_search")).clear();
driver.findElement(By.id("input_search")).click();

//here write code to wait for an element available on search result page

try{
if(driver.findElement(By.id("search result page element")).isDisplayed() == true){
System.out.println("Search successful");
} catch (NoSuchElementFound ee){System.out.println("Search not successful");}

Solution 2: Check for page loaded or not after search action performed using java script.

driver.findElement(By.id("input_search")).clear();
driver.findElement(By.id("input_search")).click();

//here write code to wait for sometime around 10-20 seconds

JavascriptExecutor jsExecutor = (JavascriptExecutor)driver;
String s = (String) jsExecutor.executeScript("var s1 = 'Search successful'; var s2 = 'Search not successful'; if(document.readyState === 'complete'){return s1;} else {return s2;}");

Both the code snippet is tested for Google.

The solution with number 2 is what I need. Thank you for your answer Abhishek Yadav — vasilev21, May 02 '14 at 16:23

How to check if refresh page event occurs or not after an UI event (ex. click on a button)

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