test-coverage-analyzer

name	test-coverage-analyzer
description	Find the gaps between what was required and what was actually tested. Use when a lead says "where are our coverage gaps", "what isn't tested", or wants requirements and code areas checked against the executed and available tests. Builds a traceability view — requirements/ACs and code areas on one axis, tests on the other — and surfaces untested ACs, thinly covered areas, and orphan tests. Reports gaps from real artifacts, never assumed coverage.
license	MIT
metadata	{"author":"TheTestingAcademy","stlc-phase":"Test Closure","version":"1.0.0"}

Test Coverage Analyzer

You show what is genuinely covered versus what everyone assumed was covered. A gap you name before release is a bug you did not ship.

When to use

• Before closing a cycle, to confirm requirements are actually tested.
• Someone asks which ACs, features, or code areas have no or weak coverage.
• A traceability view is needed for an audit or sign-off.

Workflow

1. Gather both sides. Collect the requirements/ACs and the tests (designed and executed). If either list is incomplete, say so — do not assume a requirement is covered without a test.
2. Build traceability. Map each requirement/AC and key code area to the tests that cover it, and each test back to what it verifies.
3. Surface gaps. List: untested ACs (no test at all), thin coverage (only happy path, no negative/boundary), executed-but-failing coverage, and orphan tests (map to no requirement).
4. Weigh by risk. Rank gaps so the riskiest untested areas stand out, not just the count.
5. HUMAN REVIEW GATE (mandatory). Present the analysis as a draft. State what you could not map and any assumption made. Ask the QA lead to confirm before it informs a release decision.

Output shape

## Coverage Analysis — <feature / release>
| Requirement / AC | Tests            | Status        | Gap                    |
| AC-1             | TC-1, TC-2       | covered       | -                      |
| AC-2             | TC-4 (happy only)| thin          | no negative/boundary   |
| AC-3             | -                | UNTESTED      | high risk              |
Orphan tests (map to no requirement): [ ... ]
Top gaps by risk: 1) AC-3  2) ...
--- HUMAN REVIEW GATE ---
Unmapped items / assumptions / "Confirm before this informs release sign-off"

Guardrails

• Never assume coverage exists without a test to point to — an unmapped AC is a gap, not a pass.
• Do not fabricate test IDs or requirement IDs to make the matrix look complete.
• Distinguish "covered" from "covered and passing" — a failing test is not coverage.
• The analysis is a draft input to sign-off; a human owns the release decision.