JiT Testing is a Visual Studio extension that helps you validate committed code changes quickly and confidently.
It analyzes your commit range, generates focused xUnit tests, executes generated and impacted tests, and surfaces clear diagnostics in the IDE. Results are shown in an integrated JiT Results window so you can review failures, inspect artifacts, and act fast.
Instead of relying only on permanently maintained static tests, JiT Testing generates focused, disposable tests for the current commit range, runs them, surfaces rich diagnostics, and lets you discard generated artifacts after use. This gives you high-signal verification exactly when you need it, without growing a long-term test burden.
Key capabilities:
[ ] Commit-range change analysis for targeted test generation
[ ] Deterministic and AI-assisted generation modes
[ ] Integrated results and diagnostics inside Visual Studio
[ ] Configurable behavior through repo-local settings
[ ] Failure insights to separate likely generation issues from code-under-test issues
Why teams use JiT Testing:
[ ] Less test maintenance: avoid accumulating static tests that add little long-term value
[ ] Disposable testing workflow: generate, execute, review, and dispose for change-specific validation
[ ] Faster feedback on committed changes: focus execution on impacted behavior
[ ] Clear failure insight in the IDE: see what failed and why in one place
[ ] Flexible strategy: use deterministic or AI-assisted generation, and promote only valuable generated tests to permanent suites