How can I address the Challenges related to debugging and visually confirming test implementation results?

238    Asked by Bhaanumatishukla in QA Testing , Asked on Feb 9, 2024

There is a scenario of headless testing using selenium. In this testing scenario, how can I address the Challenges related to debugging and visually confirming test implementation results, considering that the browser is not visible during headless mode? 

Answered by Daniel Cameron

 In the context of selenium, debugging and visually confirming results can be challenging. It is so because the browser is not displayed. If you want to address this, you can execute logging, capture screenshots, and use headless browser capabilities.

Logging for debugging

You can implement detailed logging throughout your particular script of test for capturing relevant information.

Import org.apache.logging.log4j.LogManager;

import org.apache.logging.log4j.Logger;

Public class TestExample {
    Private static final Logger logger = LogManager.getLogger(TestExample.class);
    Public static void main(String[] args) {
        Logger.info(“Starting the test script…”);
        // Your test script logic
        Logger.info(“Test script completed successfully.”);
    }
}

Capture screenshots of failure

You can take screenshots of test failures to visually inspect the state of the application at the time of failure.

Import org.openqa.selenium.OutputType;
Import org.openqa.selenium.TakesScreenshot;
Import java.io.File;
Import java.io.IOException;
Import org.apache.commons.io.FileUtils;
// …
Public class TestExample {
    // …
    Public static void captureScreenshot(WebDriver driver, String screenshotName) {
        Try {
            TakesScreenshot ts = (TakesScreenshot) driver;
            File source = ts.getScreenshotAs(OutputType.FILE);
            FileUtils.copyFile(source, new File(“./screenshots/” + screenshotName + “.png”));
            Logger.info(“Screenshot captured: “ + screenshotName);
        } catch (IOException e) {
            Logger.error(“Exception while taking screenshot: “ + e.getMessage());
        }
    }
}
Conditional headless mode
You can make your particular test script in headless-mode- for the task of conditionally enable or disable headless mode based on debugging requirements.
Import org.openqa.selenium.chrome.ChromeOptions;
// …
Public class TestExample {
    // …
    Public static void main(String[] args) {
        ChromeOptions options = new ChromeOptions();
        Boolean headlessMode = true; // Set to true for headless mode
        If (headlessMode) {
            Options.addArguments(“—headless”);
            Options.addArguments(“—disable-gpu”);
            Logger.info(“Running in headless mode.”);
        }
        WebDriver driver = new ChromeDriver(options);
        // Your test script logic
        Driver.quit();
    }
}


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