test-guard
Review generated or changed test code against universal testing rules before it ships or is presented for approval.
Profile →npx skills add sickn33/agentic-awesome-skills --skill test-guard --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Test Guard You are reviewing generated or changed test code before it ships. Enforce the rules below after the first test-writing pass and before the tests are presented, committed, or merged. Be a sharp reviewer, not a pedantic one: flag what wastes maintenance effort or hides real bugs, ignore cosmetic preferences. These rules exist because coding agents over-generate tests. The common failure modes: mock-heavy unit tests that assert implementation details, near-duplicate test bodies that differ by one value, and tests that re-verify the framework instead of the project's logic. Each looks productive in a diff and costs maintenance forever. ## When to Use Use this skill when reviewing generated or changed test code before it ships. Activate it reactively after an agent writes, edits, generates, or refactors tests — unit tests, integration tests, e2e tests, or snapshot tests in any framework. ## When this skill activates - A coding agent has just written new test functions or test files, in any language - You are editing existing tests - You are reviewing a diff that contains test changes - The user asks you to write, add, or review tests ## Adapt to the project first These rule
- When to Use
- When this skill activates
- Adapt to the project first
- What to do
- The Nine Rules
- Rule 1: Test behavior, not implementation
- Rule 2: Every mock must be justified
- Rule 3: One scenario per test, data-driven for variants
- Rule 4: Every test must justify its existence
- Rule 5: Name tests for the scenario
- Rule 6: Production regression tests are sacred
- Rule 7: No tests for framework guarantees
- Rule 8: State and value objects are real, never mocked
- Rule 9: Infrastructure under test gets real infrastructure
What does the test-guard skill do?
Review generated or changed test code against universal testing rules before it ships or is presented for approval.
How do I install it?
Run `npx skills add sickn33/agentic-awesome-skills --skill test-guard --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From sickn33/agentic-awesome-skills, a repository with 44,414 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.