How to set up a Selenium test on standalone Chrome in a Docker container?

In the context of selenium, Here are the steps given:-

Configuring docker environment

You can pull the Selenium standalone Chrome image from the docker hub by using the command “docker pull Selenium/standalone Chrome”.

Modifying the selenium WebDriver code

You should update the WebDriver initialization coding to connect to the remote WebDriver service.

Try to ensure that the test scripts use this remote driver Instance to run the test on the standalone Chrome container.

Ensuring proper logging

You can implement logging with your test script to capture the test execution details. You can use Python’s logging module for this.

You can save the screenshot and HTML dumps for failed tests for the purpose of helping with debugging.

Here is the Python structure given:-

# Docker Setup (Terminal Commands)

# Pull Selenium standalone Chrome image

# docker pull selenium/standalone-chrome

# Run Docker container

# docker run -d -p 4444:4444 –name selenium-chrome selenium/standalone-chrome

# Selenium WebDriver Code

From selenium import webdriver

Import logging

# Configure logging

Logging.basicConfig(filename=’test.log’, level=logging.INFO)

# Chrome WebDriver options

Chrome_options = webdriver.ChromeOptions()

# Remote WebDriver connection

Driver = webdriver.Remote(

    Command_executor=’http://localhost:4444/wd/hub’,

    Options=chrome_options

)

# Example test script

Try:

    Driver.get(‘https://www.example.com’)

    Assert ‘Example Domain’ in driver.title

    Logging.info(‘Test Passed: Title contains “Example Domain”’)

Except AssertionError:

    Logging.error(‘Test Failed: Title does not contain “Example Domain”’)

    Driver.save_screenshot(‘screenshot.png’)

    With open(‘page_source.html’, ‘w’) as f:

        f.write(driver.page_source)

finally:

    driver.quit()

Here is the java coding structure given:-

Import org.openqa.selenium.WebDriver;

Import org.openqa.selenium.chrome.ChromeOptions;

Import org.openqa.selenium.remote.RemoteWebDriver;

Import java.net.URL;

Import java.util.logging.FileHandler;

Import java.util.logging.Logger;

Import java.util.logging.SimpleFormatter;

Public class SeleniumDockerExample {

    Public static void main(String[] args) {

        // Docker Setup (Terminal Commands)

        // Pull Selenium standalone Chrome image

        // docker pull selenium/standalone-chrome

        // Run Docker container

        // docker run -d -p 4444:4444 –name selenium-chrome selenium/standalone-chrome

        // Selenium WebDriver Code

        WebDriver driver;

        ChromeOptions options = new ChromeOptions();

        // Remote WebDriver connection

        Try {

            Driver = new RemoteWebDriver(new URL(http://localhost:4444/wd/hub), options);

            // Configure logging

            Logger logger = Logger.getLogger(“SeleniumTests”);

            FileHandler fh = new FileHandler(“test.log”);

            Logger.addHandler(fh);

            SimpleFormatter formatter = new SimpleFormatter();

            Fh.setFormatter(formatter);

            // Example test script

            Try {

                Driver.get(https://www.example.com);

                If (driver.getTitle().contains(“Example”)) {

                    Logger.info(“Test Passed: Title contains ‘Example’”);

                } else {

                    Throw new AssertionError(“Test Failed: Title does not contain ‘Example’”);

                }

            } catch (Exception e) {

                Logger.severe(“Exception: “ + e.getMessage());

                // Save screenshot and HTML dump for failed tests

                // driver.saveScreenshot(“screenshot.png”);

                // Files.write(driver.getPageSource(), new File(“page_source.html”), Charset.forName(“UTF-8”));

            } finally {

                Driver.quit();

            }

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

}