When executeScript popping up javascript alerts, test hangs on InternetExplorer

[sharathpeddapally]

Steps to reproduce -

Execute the following java code

public static void main(String a[]) {
        System.setProperty("webdriver.ie.driver", "<your-folder>\\IEDriverServer.exe");
        WebDriver driver = null;
        try {
            driver = new InternetExplorerDriver();
            driver.manage().timeouts().setScriptTimeout(30, TimeUnit.SECONDS);
            driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);
            driver.manage().timeouts().pageLoadTimeout(30, TimeUnit.SECONDS);
            driver.get("https://www.w3schools.com/jsref/tryit.asp?filename=tryjsref_alert");

            // Hangs here for InternetExplorerDriver
            Object hello = ((JavascriptExecutor) driver)
                    .executeScript("document.getElementById('iframeResult').contentDocument.getElementsByTagName('button')[0].click(); return 'hello';");
            System.out.println("return from javascript : " + hello);

            Thread.sleep(2000);
            WebDriverWait wait = new WebDriverWait(driver, 10);
            wait.until(ExpectedConditions.alertIsPresent());
            Alert alert = driver.switchTo().alert();
            alert.dismiss();
            driver.switchTo().defaultContent();
        } catch (Throwable e) {
            e.printStackTrace();
        } finally {
            if (driver != null) {
                driver.close();
                driver.quit();
            }
        }
    }

Meta -

OS: Windows 7

Selenium Version: 3.0.1

Browser: Internet Explorer

Browser Version: Internet Explorer 11

Expected Behavior -

The program should navigate to the specified URL, click on the button, alert popup, Print "hello" in the console, accept the alert and exit.

Actual Behavior -

The program hangs at the line where the javascript is being executed. The driver instance is blocked for some reason.

[jimevans]

Known limitation of the IE driver. This cannot and will not be fixed.