Selenium Webdriver Java code to click on modal popup does work in debug mode only

Question

I'm trying to click a button on a modal popup, but the code executes to the end only in debug mode (Eclipse Kepler). I tried to insert a ExplicitWaitTime method to wait some seconds after the popup is opened but still is not working. This is the code I am using:

package com.website.test;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.JavascriptExecutor;

public class CaseOne {
public static void main(String[] args) {
    System.setProperty("webdriver.firefox.profile", "SP");
    WebDriver driver = new FirefoxDriver();
    driver.get("http://www.website.test"); //step 1

    WebElement searchFirstProduct = driver.findElement(By.cssSelector(".sortResultProdName")); //step 2: locate the Webelement
    searchFirstProduct.click(); //step 2: click on the first product found 

    WebElement AddtoCart = driver.findElement(By.id("pdAddToCart")); //step 3
    AddtoCart.click();// step 3: click on the add to cart button

   // -----------------BEGIN CODE TO FIND THE POPUP WINDOW AND SWITCH TO IT -------------------------
    WebElement ModalForm = driver.findElement(By.id("add-to-cart"));//find element add-to-cart which contains the iframe
    WebElement k = ModalForm.findElement(By.tagName("iframe"));

    driver.switchTo().frame(k);
    WebElement n = driver.findElement(By.tagName("form"));

   //------------------END CODE TO FIND THE POPUP WINDOW AND SWITCH TO IT -----------------------------

    WebElement checkOut = n.findElement(By.id("aCheckOut1"));
    checkOut.click();

}  

}

Basically it works until the execution reaches

 WebElement k = ModalForm.findElement(By.tagName("iframe"));

then nothing happens, but if I run the code in debug and I put a breakpoint on the last three lines of code

WebElement n = driver.findElement(By.tagName("form"));
WebElement checkOut = n.findElement(By.id("aCheckOut1"));
checkOut.click();

and execute them one at a time, it works. It appears to me that it might need to wait some time between finding the popup button and click on it. Any suggestion?

Thank you. Any suggestion? Thanks.

Answer 1

You may need to wait for the iframe to be ready.

Try with frameToBeAvailableAndSwitchToIt :

long defaultTimeOutInSecs = 10;
By iframeLocator = By.cssSelector("#add-to-cart iframe");
new WebDriverWait(driver, defaultTimeOutInSecs)
  .until(ExpectedConditions.frameToBeAvailableAndSwitchToIt(iframeLocator));

instead of:

WebElement ModalForm = driver.findElement(By.id("add-to-cart"));//find element add-to-cart which contains the iframe
WebElement k = ModalForm.findElement(By.tagName("iframe"));
driver.switchTo().frame(k);

Also, as soon as you finish working in the iframe space, you should switch back to the original document with TargetLocator#defaultContent , like this:

driver.switchTo().defaultContent();
WebElement checkOut = n.findElement(By.id("aCheckOut1"));
[..]

Answer 2

SO at the end, after trying WebDriverWait in any fashion available, I was able to pause the code using a thread sleep like this:

try {
    Thread.sleep(2000);
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

Not sure why sometime I can use successfully WebDriverWait and some other times I can't. If I will find out, I will post it here.