Selenium Base doesn't open Chrome tab in a Ubuntu VM (VMware)

[S2001B]

I have a problem when i run a script in Ubuntu VM to open a Chrome tab with Selenium Base. I am not sure if the problem is that it defaults to a headless state or it actually doesn't run Chrome properly. This is the script I ran :

from seleniumbase import Driver

with Driver(uc=True) as driver:
driver.get("https://www.example.com")
driver.sleep(5)

When I run the script and open my System Monitor in Ubuntu in my VM, I can see that Chrome starts running in the background, and it indeed stops working after the script is finished.

When I run the same script in Windows, it works perfectly and the Chrome tab is visible. Could anyone please tell my why is that.

My Ubuntu is the newest LTS version and I use the latest Chrome version. I am also using the latest VMware version.

[mdmintz]

If you're using the Driver() format on a machine with no display, then use https://github.com/mdmintz/sbVirtualDisplay for Xvfb activation (to have a virtual display).

Example:

from sbvirtualdisplay import Display
from seleniumbase import Driver

display = Display(visible=0, size=(1440, 1880))
display.start()

driver = Driver(uc=True)
driver.get("https://www.example.com/")
# ...
driver.quit()

display.stop()

headless mode is also the default mode on Linux. Use --headed/headed=True to override.

Most Syntax Formats activate Xvfb by default on Linux systems, but not the Driver() format since it doesn't have all the BaseCase methods that most formats have.

With the following code, Xvfb is automatically activated on Linux systems when the driver is launched:

from seleniumbase import SB

with SB(uc=True) as sb:
    sb.driver.get("https://www.example.com/")

[amitbidlan]

Hi @mdmintz Thankyou very much for your continued support.
Issue 1:

I'm facing an issue with my SeleniumBase code. I have around 50,000 test cases, and I'm using multithreading with semaphore to lower the queue and put less stress on the Google Cloud VM. It works fine for 10-12 cases but throws the following error:

selenium.common.exceptions.SessionNotCreatedException: Message: Could not start a new session. Could not start a new session. Error while creating session with the driver service. Stopping driver service: Could not start a new session. Response code 500. Message: session not created: DevToolsActivePort file doesn't exist Host info: host: '9b59bfec7391', ip: '172.18.0.3' Build info: version: '4.20.0', revision: '866c76ca80' System info: os.name: 'Linux', os.arch: 'amd64', os.version: '5.10.0-28-cloud-amd64', java.version: '17.0.11' Driver info: driver.version: unknown ...

I have concurrency of 5 chromes in selenium-grid.

Is there any way to handle a larger number of test cases without crashing?

Issue 2:

Is there a way to keep the browser open using SeleniumBase as a Python Context Manager (with detach=True option) without overriding Selenium drivers? I want to avoid overriding drivers of Selenium.

Please help me out.

[mdmintz]

@amitbidlan The DevToolsActivePort issue is resolved by using proper Linux configuration: https://stackoverflow.com/a/50642913/7058266 (It's not specific to SeleniumBase).

Not sure what you're using for the multithreading, but only pytest can properly handle all that.
Eg. pytest -n8 (assuming your system has at least 8 cores).

For the detach alternative, see this thread: #1814

[amitbidlan]

@mdmintz Hi , Thank you for reply and time. I have gone through the StackOverflow post. The problem I am facing is how to add chrome options in
with SB(undetectable=True,locale_code="en", enable_3d_apis=False, headless=True,demo=True,do_not_track=True,) as sb: to disbale sandbox, I am calling this class using Flask app. If I try to structure the code according to this one:
`class OverrideDriverTest(BaseCase):

def get_new_driver(self, *args, **kwargs):
    """ This method overrides get_new_driver() from BaseCase. """
    options = webdriver.ChromeOptions()
    options.add_experimental_option(
        "excludeSwitches", ["enable-automation"]
    )
    options.add_experimental_option("useAutomationExtension", False)
    
    return webdriver.Chrome(options=options)

def test_simple(self):
    self.open("https://seleniumbase.io/demo_page")
    self.assert_text("Demo Page", "h1")`

I get the error: It looks like you are trying to call a SeleniumBase method
from outside the scope of your test class's self object.

Please suggest how to provide options/arguments with SB(uc=True) format. Thank you.

[mdmintz]

Options like that are already included. Eg.

SeleniumBase/seleniumbase/undetected/options.py

Line 72 in 6ae5ee3

use_auto_ext = self.experimental_options.get("useAutomationExtension")

SeleniumBase/seleniumbase/core/browser_launcher.py

Line 866 in 6ae5ee3

["enable-automation", "enable-logging", "disable-sync"],

SeleniumBase/seleniumbase/core/browser_launcher.py

Line 872 in 6ae5ee3

["enable-automation", "enable-logging", "enable-blink-features"],

There are lots of default options already set. Search for them first.

For the not-already-included default options, there are args that you can pass into SB() on initialization:

SeleniumBase/seleniumbase/plugins/sb_manager.py

Line 30 in 6ae5ee3

def SB(

Follow the 23 Syntax Formats for structuring your tests properly.