Test Gap Analysis

You've written some tests, CI is running — but how do you know if you've covered enough? The /twd:test-gaps skill scans your project to find untested and partially-tested routes, then classifies them by risk.

Running the Skill

/twd:test-gaps

The skill cross-references your routes against your existing TWD test files and produces a prioritized report:

How It Works

1. Route discovery — Detects all routes in your app (from framework router configs, page component patterns, or test URLs)
2. Coverage classification — Each route is classified as:
   • Tested — Has both twd.visit() and userEvent interactions
   • Partially tested — Has visits but missing interaction or mutation mock coverage
   • Untested — No matching test files at all
3. Risk assessment — Reads component code to assign risk (HIGH/MEDIUM/LOW) based on mutations, financial handling, permissions, and UI complexity

Filling the Gaps

Once you know what's missing, you can run the /twd skill again to write tests for the high-priority gaps. Here's a video showing the full flow — from identifying gaps to writing and running the missing tests:

What's Next

Now that you've filled your gaps, let's check how good your tests actually are.

Test Quality →