Think You Have Full Test Coverage? Here Are 5 Gaps Most Teams Miss
You’ve got your unit tests. Your end-to-end flows. Maybe even 100% code coverage. But bugs still slip through.
That’s because fullcode coverage doesn’t guarantee fulltest coverage. Visual glitches, browser inconsistencies, and content drift often escape traditional automation — and they’re exactly the kinds of issues your users notice first.
InThe Coverage Overlook, the kickoff session of ourTesting Your Way: Code & No-Code Journeys webinar series, we explored five critical coverage gaps most teams miss — and how to close them with AI-powered visual testing and no-code tools.
1. Visual and Layout Bugs
Code-based assertions won’t catch when an element shifts, disappears, or overlaps. That’s where Visual AI steps in.
By analyzing the rendered UI — not just the DOM — Visual AI identifies layout issues, missing images, overlapping text, and subtle visual defects with a single line of code (or none at all).
“Visual AI can instantly catch layout shifts, missing elements, and new text that coded assertions would miss — all without the maintenance burden of custom locators.”
—Tim Hinds, Applitools
2. Cross-Browser and Device Inconsistencies
Most test suites default to Chrome. But real users span dozens of devices and browsers.
Visual AI tools like Applitools Eyes can validate your app across multiple browsers and screen sizes in parallel — using a single test run. No custom scripting required.
3. Dynamic Content Variations
Personalized content, A/B tests, and location-based content are tough to verify with scripted tests alone.
Visual AI combined with flexible match algorithms can confirm layout structure while ignoring safe visual differences — helping your team catch what matters, without writing exceptions for every variant.
4. Lower-Priority Flows and Pages
Teams tend to focus their test coverage on critical flows — like checkout or login — and leave lower-traffic pages untested.
No-code tools like Applitools Autonomous make it easy to cover the rest. A built-in crawler can scan your site and establish visual baselines across dozens (or hundreds) of pages — all without writing a single test script.
5. Accessibility Gaps
Code coverage can’t catch color contrast failures, missing labels, or overlapping elements that make your UI inaccessible.
Visual AI can. And with upcoming enforcement of the European Accessibility Act, now is the time to start catching these issues early.
Watch the Full Session On-Demand:Code & No-Code Journeys: The Coverage Overlook
Closing the Gap
Code coverage still has value — but modern teams are shifting towarduser-centered test coverage.
As shared in the session, teams like Eversana are combining code-based, no-code, and visual testing strategies to expand coverage, accelerate feedback, and reduce risk. With this blended approach, they’ve achieved:
- 65% reduction in regression testing time
- 750+ hours saved per month
- 90% test stability
- A unified testing culture across manual testers, developers, and QA
What’s Next in the Series?
The journey continues withThe Maintenance Shortcut, where we explore how teams are reducing flaky tests, eliminating brittle locators, and cutting test maintenance with Visual AI and Autonomous.
Quick Answers
Code coverage measures lines executed, not what users see—visual defects, layout shifts, and browser differences can slip through.
Visual regressions, cross-browser/device inconsistencies, dynamic/personalized content, untested journeys, and accessibility issues.
Use Visual AI (https://applitools.com/visual-ai) to validate pixels and Ultrafast Grid (https://applitools.com/ultrafast-grid) to scale UI checks across browsers/devices; add no-code flows with Autonomous to broaden coverage (https://applitools.com/platform/autonomous/).
Start by visual-validating your highest-traffic pages and critical journeys, then expand to your full cross-browser matrix.
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AI Testing in Regulated Environments: Smarter Testing Starts With Stability, Not More CodeGetting Started, LearnBuyer’s Checklist for Autonomous Testing in Regulated EnvironmentsAdvanced TopicsAI End-to-End Testing Demo
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