The installation page here says to add the selenium server standalone jar to the CLASSPATH. What does the jar do? Do I need it? I ran some selenium code already and it works without it. I just instantiated IE doing
driver = driver.Ie()
I am running webdriver (selenium 2) in Python, trying to test IE9 (and then after test IE8). (I'm not using .NET, just running a .py file) Thanks!
That was the jar you needed to run with "Selenium 1". It is not necessary with Selenium 2 as far as I know. It may be used when doing remote testing (I haven't done that with Selenium 2), but it is definitely not needed for local testing.
Related
I have up and running an Apache Server with Python 3.x installed already on it. Right now I am trying to run ON the server a little python program (let's say filename.py). But this python program uses the webdriver for Chrome from Selenium. Also it uses sleep from time (but I think this comes by default, so I figure it won't be a problem)
from selenium import webdriver
When I code this program for the first time on my computer, not only I had to write the line of code above but also to manually download the webdriver for Chrome and paste it on /usr/local/bin. Here is the link to the file in case you wonder: Webdriver for Chorme
Anyway, I do not know what the equivalences are to configure this on my server. Do you have any idea how to do it? Or any concepts I could learn related to installing packages on an Apache Server?
Simple solution:
You don't need to install the driver in usr/local/bin. You can have the .exe anywhere and you can specify that with an executable path, see here for an example.
Solution for running on a server
If you have python installed on the server, ideally >3.4 which comes with pip as default. Then install ChromeDriver on a standalone server, follow the instructions here
Note that, Selenium always need an instance of a browser to control.
Luckily, there are browsers out there that aren't that heavy as the usual browsers you know. You don't have to open IE / Firefox / Chrome / Opera. You can use HtmlUnitDriver which controls HTMLUnit - a headless Java browser that does not have any UI. Or a PhantomJsDriver which drives PhantomJS - another headless browser running on WebKit.
Those headless browsers are much less memory-heavy, usually are faster (since they don't have to render anything), they don't require a graphical interface to be available for the computer they run at and are therefore easily usable server-side.
Sample code of headless setup
op = webdriver.ChromeOptions()
op.add_argument('headless')
driver = webdriver.Chrome(options=op)
It's also worth reading on running Selenium RC, see here on that.
I have an EC2 ubuntu instance where I have planned a script twice a day.
The script uses Splinter Python lib with PhantomJs headless browser to test some button and actions on my website.
I have just noticed that my T1.micro instance is slower and slower, until my script is not launching anymore.
Run du on my instance and found that Phantomjs takes a lot of memory on my disk.
Can I remove thoses files?
How can I prevent this stack of files ?
Can't find anything related on Splinter nor Phantomjs.
Thanks!
When I'm writing a selenium python script, I have to start a session with some command like
driver = webdriver.Firefox()
However, this opens a new browser window.
What I would like is to have the window that is already open be accessed by the script, much like it would be if I have started the selenium IDE add-on (that cannot run python scripts afaik).
Could anybody please tell me if there is a way to do that?
I've often wanted this functionality with Selenium and Python myself. Unfortunately, it's not part of Selenium's current features.
For more info, check out the answer threads here:
Can Selenium interact with an existing browser session?
(looks like someone came up with a hack solution, but I haven't tested it)
and here:
Can Selenium webdriver attach to already open browser window?
Good luck!
It seems that a lof of people are having trouble getting Selenium to find chromedriver, so this may apply to them aswell if they actually have the chromedriver.exe in the correct path.
It seems I have everything I need to have these selenium tests working, and when I manually try running the following 2 lines, everything works fine (it finds chromedriver and opens Chrome).
from selenium import webdriver
webdriver.Chrome()
However, when I put the exact same code into a Django test and try running the test through Django, I get a "ChromeDriver executable needs to be available in the path" error. I've tried re-installing Django and Selenium to no success.
Any help would be appreciated!
The problem was actually caused by enabling Celery tasks.
I am using selenium-2.35.0 and Python-2.7.
Testcases are written in python.
my python code to create driver object:
from selenium import webdriver
driver = webdriver.Remote(desired_capabilities={
"browserName": "firefox"
})
And run selenium server by,
java - jar selenium-server-standalone-2.35.0.jar
I had my code working in Firefox - 22 - had the selenium server running, able to run scripts in python, etc. So I'm confident the code works.
Recently, I updated FireFox to 23 and now all I get is
"[Errno 10061] No connection could be made because the target machine actively refused it."
I thought maybe I need to restart the server again, or something. But that seems to do nothing. Is this issue related to selenium webdriver's support for the latest browser version?
But as of this link http://selenium.googlecode.com/git/java/CHANGELOG , selenium supports Firefox - 23. If supported, code that run in Firefox - 22 should also run in Firefox - 23 without any code change.
And how can i make the same code work for chrome?
I have found that the newest version of firefox routinely doens't work immediately well with Selenium. Check out this firefox support matrix on Github that someone made. Unfortunately the only thing you can do is stop Firefox from auto-updating and keep your selenium tests running for firefox newest version minus 1 or 2. Chrome tends to work out of the box for Selenium, sometimes the Beta channel has fixed some selenium issues, so try that if you have a particular issue (on the other hand it may introduce other bugs). So in the end you need to be constantly weary of browser updates and routinely checking how they are working with the current version of selenium.
Check out this guide on how to get Selenium working with rolled back versions of firefox:
http://inkhorn.ca/selenium-python-on-ubuntu-using-firefox/
It will also fix any errors that have to do with “version xul**.0 not defined in file libxul.so”