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Verifying Dynamic Element Styles (e.g., Background Color)

 

Problem: How to Verify Dynamic CSS Properties?

In many web applications, elements change style based on user actions or application states—for example, a button turning green after a successful action or an input box showing a red border on error.

A Visual Verification is not suitable for this because it compares screenshots, not specific CSS values. It cannot reliably detect fast or subtle style changes.

 

Solution: Use CSS Attribute Verification

To accurately confirm that a dynamic style has changed (such as background-color, border-color, or font-weight), you should use a CSS Attribute Verification step.

This method checks the element’s actual computed CSS property value and compares it with the expected value (e.g., #00FF00 or rgb(0, 255, 0)).

 

How to Implement This

  1. Locate the element whose style change you want to verify.

  2. Add a verification step right after the action that triggers the visual change.

  3. In the verification options, select “CSS Attribute Verification.”

  4. Enter the CSS property name (e.g., background-color, border-color, font-size).

  5. Enter the expected value for that property (e.g., #00FF00, rgb(0, 255, 0), or bold).

 

Example

To confirm that a button turns green, add a CSS Attribute Verification step that checks if the button’s background-color matches the expected color code.