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Unity/Ceedling Test Skill · a5c-ai | DecimalAI

Registry skillby a5c-ai

Unity/Ceedling Test Skill

a5c-ai/unity-ceedling-test

Source a5c-ai/babysitter ↗License MIT

Embedded unit testing with Unity framework and CMock

SkillScore100Maintained

Automatic

QA & Test Engineering pack

Last verified 8/29/2026

What it changes

Passed 22 of 22 test cases with the skill, and 16 of 22 without it.

Without skill73%

With skill100%

Checks it passed that the model alone missed

Sets :build_root to 'build/'
Sets :test_file_prefix to 'test_'
Configures :mock_prefix to 'mock_'

and 6 more in the full report

6 fixed16 passed either way0 still failing0 broke

Pass-rate lift: +27 pp
Tokens: +26%
Agent turns: 0%
Response time: -14%

Model gemini-3.6-flashMeasured 8/29/2026v122 of 22 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/a5c-ai-unity-ceedling-test/SKILL.md https://app.decimal.ai/s/a5c-ai-unity-ceedling-test/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add a5c-ai-unity-ceedling-test, 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/a5c-ai-unity-ceedling-test/ and pins it in .decimal/skills.lock

decimalai skills add a5c-ai-unity-ceedling-test

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

curl -fsSL --create-dirs -o .claude/skills/a5c-ai-unity-ceedling-test/SKILL.md https://app.decimal.ai/s/a5c-ai-unity-ceedling-test/SKILL.md

Raw file: /s/a5c-ai-unity-ceedling-test/SKILL.md ↗ · machine-readable summary at /s/a5c-ai-unity-ceedling-test.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 6 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 6

Prompt

When organizing Ceedling directory structures and test file names, team members often put tests under 'tests/' with a suffix of '_test.c'. Write the top-level :project section of project.yml specifying the build output folder and the standard test filename prefix.

What was checked, without and with the skill
Checked	Without skill	With skill
Sets :build_root to 'build/'	Missed	Passed
Sets :test_file_prefix to 'test_'	Missed	Passed

case-04 · gemini-3.6-flash · 8/29/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md147 linessingle file

Unity/Ceedling Test Skill

Overview

This skill provides embedded unit testing capabilities using the Unity test framework, CMock mock generation, and Ceedling build system for comprehensive off-target and on-target testing.

Capabilities

Unity Test Framework

Test case generation
Assertion macro usage
Test fixture setup/teardown
Test group organization
Parameterized tests
Custom assertions

CMock Mock Generation

Automatic mock generation from headers
HAL/driver mocking strategies
Callback mocking
Argument capture and validation
Return value configuration
Call count verification

Ceedling Build System

Project configuration (project.yml)
Test runner generation
Coverage integration
Compiler configuration
Plugin management
CI/CD integration

Hardware Abstraction Mocking

Register mock strategies
DMA mock patterns
Interrupt mock handling
Timing mock approaches
State machine mocking

Test Coverage

Track record

Benchmark

22 / 22

test cases passed, vs 16 / 22 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 v4 — 8/10/2026

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

a5c-ai / babysitter

library/specializations/embedded-systems/skills/unity-ceedling-test/SKILL.md

View on GitHub ↗

License MITImported 8/10/2026Version v1

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

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See it in action

What's inside

Unity/Ceedling Test Skill

Overview

Capabilities

Unity Test Framework

CMock Mock Generation

Ceedling Build System

Hardware Abstraction Mocking

Test Coverage

Track record

Benchmark

Adoption

SkillSafety

Source

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