User Interface (UI) Testing
User Interface (UI) Testing is the process of verifying that the visual elements and interactive components of an application work correctly and provide a consistent, intuitive user experience.
UI testing answers: “Is the application easy to use and visually correct?”
1. Definition
User Interface (UI) Testing is the process of verifying that the visual elements and interactive components of an application work correctly and provide a consistent, intuitive user experience.
UI testing answers: “Is the application easy to use and visually correct?”
2. Purpose of UI Testing
- Ensure correct display of UI elements
- Validate user interactions
- Improve usability and user satisfaction
- Detect visual and alignment issues
- Ensure consistency across screens
3. Scope of UI Testing
UI testing includes validation of:
- Buttons, links, fields, labels
- Layout, alignment, spacing
- Fonts, colors, icons
- Navigation and menus
- Error and success messages
4. Manual Tester’s Role
- Verify UI against design specs
- Validate user interaction flows
- Test responsiveness (basic)
- Check accessibility basics
- Log UI defects with screenshots
5. Types of UI Testing (Manual)
5.1 Functional UI Testing
- Buttons clickable
- Inputs accepted correctly
5.2 Visual UI Testing
- Alignment, spacing, fonts
5.3 Usability UI Testing
- Ease of navigation
- Clarity of messages
6. UI Testing Checklist (Manual)
- Mandatory fields marked
- Correct tab order
- Keyboard accessibility
- Clear error messages
- Consistent look & feel
7. UI Testing vs Usability Testing
| Aspect | UI Testing | Usability Testing |
|---|---|---|
| Focus | Visual & interaction | User experience |
| Validation | Design specs | User behavior |
| Performed by | Testers | Users/Testers |
8. Real-Time Example
Login page UI testing:
- Field alignment
- Placeholder text
- Error message placement
- Password masking
- Button states
9. Common UI Defects
- Misaligned fields
- Broken links
- Overlapping text
- Inconsistent fonts
- Unclear error messages
10. Common Mistakes
- Ignoring minor UI issues
- Testing only one browser/device
- Not validating accessibility basics
11. Interview-Ready Answers
Short answer:
UI testing verifies the correctness, consistency, and usability of an application’s user interface.
Detailed answer:
UI testing ensures that all visual elements and interactions function correctly and provide a consistent and user-friendly experience.
12. Key Takeaway
Good UI testing improves user trust and satisfaction, not just visual appeal.