What is a test matrix?
A test matrix is a structured table that visually maps testing elements against one another. It shows the relationships between test cases, requirements, platforms, or other test variables. This tool helps testers track which combinations have been tested, their results, and any gaps in coverage—all in one central place that’s easy to scan.
Do you have any examples of test matrices?
A cross-browser test matrix tracks compatibility across different platforms. Here's a simple example:
Feature/Function | Chrome/Win11 | Firefox/Win11 | Safari/macOS | Chrome/Android Login | ✅ Pass | ✅ Pass | ❌ Fail | ✅ Pass File Upload | ✅ Pass | ⚠️ Partial | ✅ Pass | ❌ Fail Form Submission | ✅ Pass | ✅ Pass | ✅ Pass | ✅ Pass Media Playback | ❌ Fail | ✅ Pass | ✅ Pass | ⚠️ Partial
A requirements traceability matrix links requirements to test cases, showing which tests verify each requirement and their current status.
Why is a test matrix important?
Test matrices help teams spot coverage gaps, make sure all requirements get tested before release, and give everyone clear visibility into testing progress. This helps managers and stakeholders make better decisions based on actual test completion data.
What are the challenges of using a test matrix?
Keeping matrices current as requirements change is hard, especially in agile projects. Large applications with many test cases create unwieldy matrices that take time to maintain. Teams can address these issues by using test management tools that automatically update coverage metrics.
