Codeless with Visual Regression Testing

Overview

Regression testing is performed whenever developers make code changes to ensure that existing functionalities remain unaffected. Similarly, visual regression testing focuses on verifying that these changes do not disrupt the software’s visual interface.

Visual regression testing is essential for identifying and addressing visual errors or defects caused by improper styles, alignments, fonts, or other UI elements. Common visual issues include overlapping modules, hidden or missing elements, or components rendering off-screen.

For instance, imagine you’re booking a flight and have reached the final checkout page after entering a lot of information. However, the checkout button is hidden behind the cancel button, preventing you from proceeding. As a customer, this frustrating experience might discourage you from returning to the website for future bookings.

Codeless Testing with Visual Regression Testing

Debugging is a critical skill for automation testers. It ensures that automated test cases function correctly, eliminating false positives and negatives. Effective debugging not only boosts testers’ confidence but also leads to better code quality and faster issue resolution.

With TestGrid’s enhanced debugging features for codeless steps, testers now have access to a unified UI that provides clear error expressions and suggested fixes. This allows users to create more accurate automation scripts, saving time and enabling quicker transitions to autopilot testing.

In addition, Visual Regression Testing plays a vital role in validating the appearance of the user interface (UI). It ensures the UI is rendered correctly across different browsers, devices, and screen sizes, providing users with a consistent and visually appealing experience.

How to Perform Codeless Visual Testing Using TestGrid?

Step 1: Log in to TestGrid

1. Log in to the TestGrid platform using your valid credentials.
2. Navigate to the Codeless section under the Automation menu.
3. Create your project, version, and module to get started.

Step 2: Record a New Test Case

1. Begin by recording a new test case:
   • Enter a name for your test case.
   • Upload the corresponding file based on your application type:
     • APK for Android apps
     • IPA for iOS apps
     • A website URL for web testing
2. Select the target device for your test.
3. Click the “Start Writing Test Case” button to begin creating your test case.

Step 2: Use the Codeless Generator

1. Once the codeless generator session is created, start building your test case:
   • Use the element picker to select UI elements directly.
   • Leverage the record and play features for quick test creation.
2. After completing your test case:
   • Click the Save button to save your recorded test steps.
   • Close the generator tab to finish this step.

Step 3: Run Your Test Case

1. Select your test case from the list and click the Run button.
2. Choose the desired device for execution, then click Run again to initiate the test.
3. After the test case runs successfully:
   • Locate the Visual Testing option at the bottom left corner of the screen and click on it.
   • For the first run, the test set will be automatically marked as Baseline, serving as the reference for future comparisons.

Step 4: Review and Update Visual Test Results

1. 1. Once the execution is complete, a list of test steps with their generated statuses will appear on the screen for a few seconds.
   2. After the results are generated, you can review the screenshot comparisons for each step:
      • Click the Compare button to view the visual differences between two screenshots.
      • Differences will be highlighted with a red rectangle, making them easy to identify.
   3. If needed, you can update the baseline for future test executions:
      • Click the Update Baseline button to set the most recent image as the baseline for the specific step.
      • Alternatively, you can set the entire test session as the baseline by clicking the Set Session as Baseline button. This will apply the updated baseline to all steps in the session.

Step 5: Ignore Specific Regions in Visual Comparisons

1. To ignore specific regions in the baseline versus result image:
   • Click the Compare button in the action section of the latest report.
2. Edit the changes:
   • Use the Ignore Region option to mark areas you want to exclude from the comparison by selecting the portion directly on the image.
3. Save your changes:
   • Once you’ve selected the region(s) to ignore, click Save to apply and preserve the changes for future test executions.

After saving, a Success dialogue box will appear.

Compare another step with the baseline by clicking on it.

Select the Selective region option in the drop-down; you can specifically add/ignore the portion of the image.

Color can be ignored by selecting the checkbox.

After saving, a Success dialogue box will appear.

Failed Status will be updated into Success after making changes in the existing report

Happy Tesing!!