Selenium force driver.Quit which ignores "asking to leave" dialog

Question

Background: I am using Selenium, C#, and Firefox to automate a task I perform regularly. I have choose this option because the website I am accessing no longer provides a REST API. In my code I regular check for errors such as failing to find a web element. At such time I want my application to gracefully exit with an error message.

For reference my current code

        if (driver != null)
        {
            driver.Quit();
        }

Problem: driver.Quit() does not close Firefox or the geckodriver when called from a webpage with a form that has been partially filled out. Instead a dialog will pop up which says

This page is asking you to confirm that you want to leave - data you have entered may not be saved.

Doing some searching I found the dialog is generated by the webpage. I tried looking for a Firefox preference to disable the popup but count not find one that was relevant. One search result turned information about killing the Firefox process.

Question: Is there a recommended Selenium approach for ensuring the Firefox and the web driver are terminated?

https://stackoverflow.com/questions/45288215/python-and-selenium-disable-alert-when-leaving-page answer points to a javascript method for suppressing alerts — Grasshopper, Feb 09 '18 at 17:28
Possible duplicate of [Selenium : How to stop geckodriver process impacting PC memory, without calling driver.quit()?](https://stackoverflow.com/questions/47999568/selenium-how-to-stop-geckodriver-process-impacting-pc-memory-without-calling) — undetected Selenium, Feb 09 '18 at 18:27

score 1 · Accepted Answer · answered Feb 09 '18 at 22:53

There are a couple things you can do:

As mentioned in comments, suppress them entirely

As you mentioned, Process.Kill. An implementation of this I use is:

// ProccessId's can be gotten by Proccess.GetProcessesByName("Name")
public static void KillProcessAndChildren(params int[] processIds)
{
    foreach (var processID in processIds)
    {
        ManagementObjectSearcher searcher = new ManagementObjectSearcher(
            "Select * From Win32_Process Where ParentProcessID=" + processID);
        ManagementObjectCollection moc = searcher.Get();
        foreach (ManagementObject mo in moc)
        {
            KillProcessAndChildren(Convert.ToInt32(mo["ProcessID"]));
        }
        try
        {
            Process proc = Process.GetProcessById(processID);
            proc.Kill();
        }
        catch (ArgumentException)
        {
            // Process already exited.
        }
    }
}

Accept the warning dialog after verifying that you do not need to pay attention to it. This is the best solution in my opinion as it makes sure that if there is an unexpected error, your test does not return a false pass. The code to do this is:
```
var alert = driver.SwitchTo().Alert();
if (alert.Text == "The expected error message")
    alert.Accept();
else
    Assert.Fail("The webriver raised an unexpected warning: " + alert.Text);
```

Thanks for the information. I was hoping there was a way where I wouldn't have to manage this myself. I'm now using the approach of disabling alerts before attempting to close. Then checking the processes and force closing them. — sdc, Feb 12 '18 at 13:39

Selenium force driver.Quit which ignores "asking to leave" dialog

1 Answers1