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Automating with Selenium

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Obada Haddad edited this page Dec 10, 2025 · 10 revisions

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Automation

What and Why

It's useful to test various parts of the system with lots of data or many intricate actions. The selenium tests do this generally and are used as a guide for this tutorial. One problem is that Selenium needs to launch an instance of a browser to control. Our tests do this inside a docker container and uses a test database that doesn't persist as it cleans up after itself. We need to be able to control a live codabench session that is running. To do that we install a driver locally which is normally only inside the selenium docker container during tests. It is specific to your browser so keep that in mind.

Virtualenv

You'll need a python virtual env as you don't want to be inside Django or you won't be able to launch a browser.

Virtualenv

I used 3.8.

python3 -m venv codabench
source ./codabench/bin/activate

Pyenv

pyenv install 3.8
pyenv virtualenv 3.8 codabench
pyenv activate codabench

Requirements

We have a couple extra things like webdriver-manager for getting a driver programmatically and selenium needs to be upgraded to use modern client interface.

pip install -r requitements.txt
pip install -r requitements.dev.txt
pip install webdriver-manager
pip install --upgrade selenium

Automate competition creation

Main Selenium Docs
Install
Getting Started

When in doubt use AI

import os, time
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.chrome.service import Service
from webdriver_manager.chrome import ChromeDriverManager

# Use `ChromeDriverManager` to ensure the `chromedriver` is installed and in PATH
service = Service(ChromeDriverManager().install())
driver = webdriver.Chrome(service=service)

# ... now use `driver` to control the local Chrome instance
driver.get("http://localhost/accounts/login")

# Use CSS selectors to find the input fields and button
username_input = driver.find_element(By.CSS_SELECTOR, 'input[name="username"]')
password_input = driver.find_element(By.CSS_SELECTOR, 'input[name="password"]')
submit_button = driver.find_element(By.CSS_SELECTOR, '.submit.button')

# Type the credentials into the fields
username_input.send_keys('bbearce')
password_input.send_keys('testtest')

# Click the submit button
submit_button.click()

comp_path = "/home/bbearce/Documents/codabench/src/tests/functional/test_files/competition_v2_multi_task.zip"
def upload_competition(competition_zip_path):
    driver.get("http://localhost/competitions/upload")
    file_input = driver.find_element(By.CSS_SELECTOR, 'input[ref="file_input"]')
    file_input.send_keys(os.path.join(competition_zip_path))


for i in range(30):
    upload_competition(comp_path)
    time.sleep(5) # tune for your system

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