Selenium wait error javascript

Question

I am submitting a form with selenium and phantomjs and then navigating back to the previous page by searching for a br element indicating that the form has been submitted. Occasionally the timeout will exceed the 30s allotted time and an error will occur: TimeoutError: Waiting for element to be located By(xpath,//div[@id='ContactFormBody']/div/br) Wait timed out after 30003ms

I need to handle this error so that my program will not crash if this occurs. Additionally if anyone wants to mention good documentation for selenium node.js, that would be great!

// code generating wait error
form.then(function(self){
    driver.wait(until.elementLocated(By.xpath("//div[@id='ContactFormBody']/div/br")), 30000)
    .then(function(){
        driver.navigate().back();
    });
});

// attempt at handling error
form.then(function(self){
    try{
        driver.wait(until.elementLocated(By.xpath("//div[@id='ContactFormBody']/div/br")), 30000)
        .then(function(){
            driver.navigate().back();
        });
    }
    catch(e){
        console.log("error occurred, script will continue.")
    }
});

Waiting for br that would indicate the form submission..does not sound very reliable..is there any other form submission indication on the page? Thanks. — alecxe
– alecxe, Commented Dec 7, 2016 at 18:30
I agree! I was initially trying to wait/watch form the form fields to disappear which is another indication that the form was submitted. Could not find any examples or documentation for this condition. — nick
– nick, Commented Dec 7, 2016 at 18:32
The br is a constant though its added in place of the form fields followed by text after form submission. — nick
– nick, Commented Dec 7, 2016 at 18:33
Alright, have you tried other browsers - is it consistently failing in chrome or firefox as well? Thanks. — alecxe
– alecxe, Commented Dec 7, 2016 at 18:44
Yes, actually the script take a cli argument that specifies the browser ( phantom, chrome, firefox ) — nick
– nick, Commented Dec 7, 2016 at 18:47

alecxe · Accepted Answer · 2016-12-07 18:50:14Z

2

You can specify an error callback function as a second argument to then():

driver.wait(until.elementLocated(By.xpath("//div[@id='ContactFormBody']/div/br")), 30000)
    .then(function() {
        driver.navigate().back();
    }, function (error) {
        console.log("Error happened!");
        console.log(error);
    });
});

This documentation page has a good overview of using promises in WebDriverJS:

Module selenium-webdriver/lib/promise

answered Dec 7, 2016 at 18:50

alecxe

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1 Comment

nick Over a year ago

Great answer, thanks for your help this is exactly what I needed!

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