Regression testing and trunk-based development: The safety net you can't ignore
Why trunk-based development without automated regression testing is a risky bet. How regression testing protects your main branch from display regressions.
Read more →Visual Testing — All Articles & Tutorials
156 articles
Visual testing is a quality assurance discipline that consists in automatically comparing the rendered output of an interface between two versions, to detect regressions invisible to classic functional tests. Where a unit test verifies that a function returns the right value, a visual test verifies that what the user sees stays consistent with what was intended.
This page gathers articles from the Delta-QA blog dedicated to visual testing across all its facets: comparison methods (pixel by pixel, perceptual, structural), market tools, integration into CI/CD pipelines, measurable ROI for QA teams. Whether you are discovering the discipline or seeking to industrialize your practice, you will find here the guides, comparisons and field feedback to move forward.
Delta-QA is a no-code visual testing tool, with an On-Premise option — the purpose of this blog is also to honestly share the strengths and limits of each approach, without hiding the trade-offs.
Regression testing and white-label: How to test N themes without losing your mind
White-label apps multiply themes per client and breakpoint. Automated regression testing is the only viable way to scale offerings.
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Regression testing and Tailwind CSS: Why the utility-first approach demands visual verification
Tailwind CSS makes CSS predictable in theory. In practice, one tailwind.config.js change can break your site. Regression testing is your safety net.
Read more →Regression testing for Svelte and SvelteKit: Why the rising framework deserves a visual testing strategy
Svelte compiles components without protecting UI from regressions. Regression testing for SvelteKit with framework-agnostic tools.
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Regression testing for startups: Why start from MVP (and how to pay nothing)
Startups don't have QA teams. No-code regression testing lets the founder or PM verify the interface without depending on developers.
Read more →Regression testing for single page applications (SPA): More states, more risks, more reasons to test
SPAs multiply visual states through dynamic navigation and transitions. Regression testing manages complex rendering changes automatically.
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Regression testing for Shopify: Protect your online store against invisible bugs
Shopify themes, third-party apps, and custom checkouts break rendering regularly. Regression testing reliably catches bugs before customers.
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Visual testing shift-right: Why visual testing does not stop at deployment
Shift-right extends testing to production. Visual testing verifies appearance under real conditions without manual checks automatically.
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Regression testing and Scrum: How to integrate it into your sprints so nothing slips through
When and how to integrate regression testing into a Scrum workflow. Shift-left, sprint review, Definition of Done: the complete guide for agile teams.
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