Python Selenium - How to clear user logged-in session using the same driver instance within the suite

Question

Scenario: I need to Test multiple user logins to an application in a single Test file

Issue: When the second user login in the same test class is tried the Automation script fails as the previous users session is not wiped out

Caveats:

The application does not have a logout feature yet/UI logout process has many complications
I have put the webdriver Initialization in the conf test and reusing the driver instance in all of the tests when the test run is performed

Below is the code structure:

Conftest file:

@pytest.fixture(scope="session")
def driver_initializer(request):
    webdriver = Webdriver("chrome")
    session = request.node
    for item in session.items:
        classobj = item.getparent(pytest.Class)
        setattr(classobj.obj, "driver", webdriver)

Test Class which uses the driver instance from conftest

@pytest.mark.usefixtures("driver_initializer")
class TestClass:
 def test_method(self):
   self.driver.get("url")

```user login``` code just does regular login taking the user creds. I am looking for a way to clear user logged in session in the ```TestClass``` that I mentioned above. — Automation Engr, Dec 23 '21 at 05:34

score 1 · Answer 1 · answered Dec 29 '21 at 14:54

1

Probably as when a session is created it stores the the session-id as cookie in the browser.

Now to remove this we need to clear the cookies which are stored in the chrome webdriver. To do this you can do something like this ..

def test_some_test_name(self):
  <test code>
  self.driver.delete_all_cookies()

and after this you can log in again with new user.

answered Dec 29 '21 at 14:54

Dev

197
11

had tried the `delete_all_cookies` very first, it does not work in this case. – Automation Engr Dec 30 '21 at 06:06
Did you try clearing cache ?? – Dev Dec 30 '21 at 08:28
you mean clearing cache manually and verifying if it logs out the session ? – Automation Engr Dec 30 '21 at 11:49
Yes, if it works , then you can do that programmatically too – Dev Dec 30 '21 at 15:40
yes manually clearing cache works, but programmatically has issues. Tried using `delete_all_cookies`, get all cookies at once and delete 1 by 1 using `delete_cookie` method, Tried to navigate to `chrome://settings/clearBrowserData` and performed which didn't work either – Automation Engr Dec 31 '21 at 09:21
https://stackoverflow.com/a/64806395/11724995 , does this help ?? – Dev Dec 31 '21 at 09:36
yes had already tried that post, it didn't work either – Automation Engr Dec 31 '21 at 09:49
I think if a new driver Instance is used for each test in the suite for the `conftest` and the test code file, this issue can Resolve but I think that will be altogether a new question. – Automation Engr Dec 31 '21 at 14:05

score 0 · Answer 2 · answered Jan 02 '22 at 22:17

The scope of a fixture function indicates the number of times a fixture function is invoked. A pytest fixture with scope as session is created only once for the entire Selenium test automation session. Session scope is ideal for usage as WebDriver handles are available for the Selenium test automation session.

In your usecase, as you intend to test multiple user logins to an application you can't share the session as the application does not have a logout feature yet. You may opt to drop scope="session"

Additionally, once you complete the user login test, you can quit the session using self.driver.quit() and also force delete all the cookies.

The resulten files can be:

Conftest file:

@pytest.fixture()
def driver_initializer(request):
    webdriver = Webdriver("chrome")
    session = request.node
    for item in session.items:
        classobj = item.getparent(pytest.Class)
        setattr(classobj.obj, "driver", webdriver)

Test Class which uses the driver instance from conftest:

@pytest.mark.usefixtures("driver_initializer")
class TestClass:
    def test_method(self):
        self.driver.get("url")
        # perform your test
        self.driver.quit()
        self.driver.delete_all_cookies()

score -1 · Answer 3 · answered Jan 04 '22 at 19:58

-1

Are you using Django? Then you could try something like this:

from django.contrib.sessions.models import Session  
Session.objects.all().delete()

That would delete all the sessions from the database and hence log all users out.

answered Jan 04 '22 at 19:58

Håkan

13
6

Python Selenium - How to clear user logged-in session using the same driver instance within the suite

3 Answers3