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Generate tests · florianbruniaux | DecimalAI

testingby florianbruniaux

Generate tests

florianbruniaux/generate-tests

Source florianbruniaux/claude-code-ultimate-guide ↗License CC-BY-SA-4.0

Generate comprehensive tests for specified code

SkillScore67Maintained

On-demandOn-demand: invoked explicitly — never occupies your agent's context until called.

QA & Test Engineering pack

Last verified 10/8/2026

What it changes

Passed 16 of 24 test cases with the skill, and 6 of 24 without it.

Without skill25%

With skill67%

Checks it passed that the model alone missed

Each test block contains only a single assertion.
Test bodies contain explicit AAA pattern section comments.
External dependencies are mocked rather than making live network calls.

and 7 more in the full report

11 fixed5 passed either way7 still failing1 broke

Pass-rate lift: +42 pp
Tokens: +10%
Agent turns: 0%
Response time: +19%

Model gemini-3.6-flashMeasured 10/8/2026v216 of 24 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/florianbruniaux-generate-tests/SKILL.md https://app.decimal.ai/s/florianbruniaux-generate-tests/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add florianbruniaux-generate-tests, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/florianbruniaux-generate-tests/ and pins it in .decimal/skills.lock

decimalai skills add florianbruniaux-generate-tests

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/florianbruniaux-generate-tests/SKILL.md https://app.decimal.ai/s/florianbruniaux-generate-tests/SKILL.md

Raw file: /s/florianbruniaux-generate-tests/SKILL.md ↗ · machine-readable summary at /s/florianbruniaux-generate-tests.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 11 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 11

Prompt

Could you create a full unit test suite for `src/utils/stringFormatter.ts`? Make sure to cover normal execution, boundary inputs, and error handling for the public functions in that file using our project's testing setup.

What was checked, without and with the skill
Checked	Without skill	With skill
The test suite groups test cases under method-level describe blocks rather than execution category describe blocks.	Missed	Passed
Test bodies contain explicit AAA pattern section comments.	Missed	Passed
Tests inside method blocks are grouped with category comments for happy path, edge cases, and error cases.	Missed	Passed

case-01 · gemini-3.6-flash · 10/8/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md88 linessingle file

Generate tests

Generate comprehensive tests for specified code.

Instructions

Read the target file(s)
Identify testable units (functions, classes, methods)
Generate tests following project conventions
Ensure high coverage of edge cases

Test generation process

1. Analyze target

Identify public interfaces
Understand dependencies
Note edge cases and boundaries

2. Detect test framework

Check for:

jest.config.js → Jest
vitest.config.ts → Vitest
pytest.ini → pytest
mocha in package.json → Mocha

3. Generate tests

Follow the detected framework conventions.

Test categories

Happy path

Normal expected behavior with valid input.

Edge cases

Empty inputs
Null/undefined values
Boundary values (0, -1, MAX_INT)
Single item vs multiple items

Error cases

Track record

Benchmark

16 / 24

test cases passed, vs 6 / 24 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v5 — 10/8/2026

View 15 scanner checks

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

florianbruniaux / claude-code-ultimate-guide

examples/skills/generate-tests/SKILL.md

View on GitHub ↗

License CC-BY-SA-4.0Imported 10/8/2026Version v2

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Generate tests

Instructions

Test generation process

1. Analyze target

2. Detect test framework

3. Generate tests

Test categories

Happy path

Edge cases

Error cases

Track record

Benchmark

Adoption

SkillSafety

Source

Related skills