embedded-testing-patterns SKILL.md skillA
embedded-testing-patterns from hermeticormus/libreembed-claude-code is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add hermeticormus/libreembed-claude-code/embedded-testing-patterns@git:20260930.ba05790Pins git:20260930.ba05790 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- hermeticormus/libreembed-claude-code
- Path
plugins/embedded-testing/skills/embedded-testing-patterns/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260930.ba05790, committed Sep 30, 2026
- First version recorded
- Feb 25, 2026
- Size
- 5,017 bytes
- Repository stars
- 51
- License
- MIT
Firmware test patterns with Unity, CMock, Ceedling, and QEMU: project layout, testable HAL interfaces, CMock expect chaining, error-path tests, and an on-target test runner over ITM. Use when making embedded C testable or writing tests for it.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# embedded-testing-patterns
## Knowledge Base
Embedded C test patterns using Unity, CMock, Ceedling, and QEMU.
---
## Pattern 1: Ceedling Project Structure
```
project/
├── project.yml # Ceedling configuration
├── src/
│ ├── sensor.c
│ └── sensor.h
├── test/
│ ├── test_sensor.c
│ └── support/ # Test helpers, stubs
└── vendor/ # Unity, CMock (git submodule or gem)
```
Minimal `project.yml`:
```yaml
:project:
:build_root: build
:test_file_prefix: test_
:paths:
:source: ["src/**"]
:test: ["test/**"]
:include: ["src"]
:tools:
:test_compiler:
:arguments:
- -std=c11
- -DUNIT_TEST
:plugins:
:load_paths: ["vendor/ceedling/plugins"]
:enabled: [gcov, xml_tests_report]
:cmock:
:enforce_strict_ordering: TRUE
:plugins: [:ignore, :return_thru_ptr, :callback]
```
Run:
```bash
ceedling test:all # All tests
ceedling test:sensor # Single module
ceedling gcov:all # Coverage
ceedling utils:gcov # HTML coverage report
```
---
## Pattern 2: Testable HAL Interface Pattern
The golden rule: drivers never call `HAL_I2C_Master_Transmit` directly. They call through a pointer.
```c
…Read the whole file at its exact version.
How to install
mdr add hermeticormus/libreembed-claude-code/embedded-testing-patterns@sha256:fe22c37e43865c4cThe line at the top of this page pins the label git:20260930.ba05790, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_f3war7qbbecv3lua)
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Versions
The registry has recorded 4 versions of this file, between Feb 25, 2026 and Sep 30, 2026, about one every 73 days. Its first recorded version is graded C and its latest A.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260930.ba05790 latest | 2026-09-30 | ba05790 | 5,017 B | A | view · diff |
| git:20260930.dffc082 | 2026-09-30 | dffc082 | 4,838 B | A | view · diff |
| git:20260226.186740f | 2026-02-26 | 186740f | 4,715 B | C | view · diff |
| git:20260225.a4aeb64 | 2026-02-25 | a4aeb64 | 2,995 B | C | view |
Audit of the latest version
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- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5017 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
hermeticormus/libreembed-claude-code · 51 stars · license MIT · pushed 2026-10-09 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_f3war7qbbecv3lua GET https://markdownregistry.com/api/v1/resolve?ref=hermeticormus/libreembed-claude-code/embedded-testing-patterns GET https://markdownregistry.com/api/v1/blob/fe22c37e43865c4c150c8f375d8f4db1f7f849d5d504ed2755ee9955f97a0540
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