Running tests on Grid in Selenium Python - Test Execution Trace

Test Overview

This test runs a simple Selenium test on a Selenium Grid. It opens a browser on a remote node, navigates to a page, clicks a button, and verifies the result.

Test Code - Selenium

Selenium Python

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

# Setup remote WebDriver to connect to Selenium Grid hub
remote_url = "http://localhost:4444/wd/hub"
capabilities = {
    "browserName": "chrome",
    "platformName": "ANY"
}
driver = webdriver.Remote(command_executor=remote_url, desired_capabilities=capabilities)

try:
    driver.get("https://example.com")
    
    # Wait until the button is clickable
    wait = WebDriverWait(driver, 10)
    button = wait.until(EC.element_to_be_clickable((By.ID, "start-button")))
    button.click()

    # Verify the result text appears
    result = wait.until(EC.visibility_of_element_located((By.ID, "result-text")))
    assert result.text == "Test Passed", f"Expected 'Test Passed' but got '{result.text}'"

finally:
    driver.quit()

Execution Trace - 7 Steps

Step	Action	System State	Assertion	Result
1	Create Remote WebDriver session connecting to Selenium Grid hub at http://localhost:4444/wd/hub with Chrome capabilities	Remote browser node is allocated and ready	-	PASS
2	Navigate browser to https://example.com	Browser displays the example.com homepage	-	PASS
3	Wait up to 10 seconds for button with ID 'start-button' to be clickable	Button is visible and enabled on the page	Button is clickable	PASS
4	Click the 'start-button'	Button click triggers page update	-	PASS
5	Wait up to 10 seconds for element with ID 'result-text' to be visible	Result text appears on the page	Result text is visible	PASS
6	Assert that the result text equals 'Test Passed'	Text content is 'Test Passed'	result.text == 'Test Passed'	PASS
7	Quit the remote WebDriver session	Browser session closed on remote node	-	PASS

Failure Scenario

Failing Condition: The button with ID 'start-button' is not found or not clickable within 10 seconds

Execution Trace Quiz - 3 Questions

What does the test do first after creating the Remote WebDriver session?

A Navigate to https://example.com

B Click the start button

C Assert the result text

D Quit the browser session

Key Result

When running tests on Selenium Grid, always use explicit waits like WebDriverWait to handle dynamic page elements on remote browsers. This ensures your test is stable and does not fail due to timing issues.