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Testing Skill — measured AI agent skill | DecimalAI

vm0-ai/testing

SkillScore100Maintained

Comprehensive testing patterns and anti-patterns for writing and reviewing tests

Testingby vm0-ai

Links this skill to your agents and keeps it current with the author’s updates.

Automatic

QA & Test Engineering pack

decimalai skills pull vm0-ai-testing

Get this skill — curl · raw file

curl -fsSL https://app.decimal.ai/s/vm0-ai-testing/SKILL.md

Raw file: /s/vm0-ai-testing/SKILL.md ↗ · machine-readable summary at /s/vm0-ai-testing.json ↗

In productionGlobal

how this skill behaves on real traffic · last 30 days

No production data for this skill yet — usage numbers appear here once agents start running it.

Anonymized aggregate across every org using this skill — proof from real production use, not a demo.

Does this skill help? · Benchmark: with vs. withoutsign in to run this on your agents

22 test cases from the publisher’s eval.yaml · each run twice on gemini-3.6-flash — with the skill injected, then without · last run 3h ago

Yes — +55% lift-28% tokens0% turns100% of whole cases pass with skill (22/22)

Test case	Without → With	Effect	Δ tokens	Δ turns
case-03	✗→✓	▲ Improved	-32%	0%
case-04	✗→✓	▲ Improved	-34%	0%
case-01	✗→✓	▲ Improved	-54%	0%
case-02	✗→✓	▲ Improved	-41%	0%
case-05	✗→✓	▲ Improved	-34%	0%

Showing 5 of 22 cases

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

vm0-ai / vm0

.claude/skills/testing/SKILL.md

View on GitHub ↗

License NOASSERTIONImported 8/3/2026Version v1

Skill contents

SKILL.md

Testing Skill

Use this skill when writing tests, reviewing test code, or investigating test failures.

Documentation

Read the testing guide and relevant reference based on context:

| Context | Primary | Reference | |---------|---------|-----------| | General | docs/testing.md | — | | Anti-patterns | docs/testing.md | anti-patterns.md | | Patterns | docs/testing.md | patterns.md | | CLI (turbo/apps/cli) | docs/testing.md | cli-testing.md | | CLI E2E (e2e/tests/) | docs/testing.md | cli-e2e-testing.md | | API (turbo/apps/api) | docs/testing.md | api-testing.md | | App (turbo/apps/platform) | docs/testing.md | app-testing.md | | Rust (crates/) | docs/testing.md | rust-testing.md | | Python addon (crates/runner/mitm-addon) | docs/testing.md | mitm-addon-testing.md |

Key Principles

Integration tests are primary — test at system entry points
Mock at the boundary — only mock external services, not internal code
Use real infrastructure — real database, real filesystem (temp dirs)
Test behavior, not implementation — verify outcomes, not mock calls

Want to see if vm0-ai/testing would activate on your phrasing? Try it before you install — no LLM call, no signup.

Other measured skills in the registry, with their headline benchmark lift.