vibe-adversarial-test-generation SKILL.md skillA

vibe-adversarial-test-generation from ash1794/vibe-engineering is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add ash1794/vibe-engineering/vibe-adversarial-test-generation@git:20261007.24cccad

Pins git:20261007.24cccad in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
ash1794/vibe-engineering
Path
plugins/vibe-engineering/skills/vibe-adversarial-test-generation/SKILL.md
Versions recorded
2
Latest version
git:20261007.24cccad, committed Oct 7, 2026
First version recorded
Sep 25, 2026
Size
5,748 bytes
Repository stars
165
License
MIT

Generates edge case, failure mode, and spec-driven test cases. Covers boundary values, nil inputs, concurrency, resource exhaustion, malformed data, and requirement-linked traceability tests. Use after happy-path tests exist and before claiming coverage is complete, when requirements lack tests, or before a security review.

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

# vibe-adversarial-test-generation

Happy-path tests prove your code works. Adversarial tests prove it doesn't break. Spec-linked tests prove it does what it's supposed to.

## When to Use This Skill

- After writing happy-path tests for a feature
- Before claiming test coverage is complete
- When spec requirements lack corresponding tests
- When preparing for a security review
- When `vibe-spec-sync` or `vibe-coverage-enforcer` reports uncovered requirements

## When NOT to Use This Skill

- Before happy-path tests exist (write those first)
- For throwaway/prototype code
- When the function is trivially simple (e.g., getters/setters)

## Modes

### Mode 1: Adversarial (Edge Cases)

Generate tests that break assumptions across 6 categories.

#### 1. Boundary Values
- Zero, one, max, max+1 for all numeric inputs
- Empty string, single char, max-length string
- Empty array, single element, very large array
- Exactly at threshold values

#### 2. Nil/Null/Undefined
- nil pointer as receiver
- nil arguments to every parameter
- nil nested fields in structs
- Returning nil where non-nil expected

#### 3. Type Edge Cases
- Unicode: emoji, RTL text, zero-width chars, combining chars
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add ash1794/vibe-engineering/vibe-adversarial-test-generation@sha256:34b42e904a579bbd

The line at the top of this page pins the label git:20261007.24cccad, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_4lqlzkz2si5qqu2u.svg)](https://markdownregistry.com/a/art_4lqlzkz2si5qqu2u)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 2 versions of this file, between Sep 25, 2026 and Oct 7, 2026, about one every 12 days.

versioncommittedcommitsizeaudit
git:20261007.24cccad latest2026-10-07 24cccad 5,748 BA view · diff
git:20260925.f6554ff2026-09-25 f6554ff 5,614 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (5748 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

GitHub

ash1794/vibe-engineering · 165 stars · license MIT · pushed 2026-10-07 · branch master

API

GET https://markdownregistry.com/api/v1/artifacts/art_4lqlzkz2si5qqu2u
GET https://markdownregistry.com/api/v1/resolve?ref=ash1794/vibe-engineering/vibe-adversarial-test-generation
GET https://markdownregistry.com/api/v1/blob/34b42e904a579bbd7e57f6bc9d02840b7b0ffd3fa61f356f041024a6918cab2c

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

More from ash1794/vibe-engineering

AGENTS.md AGENTS.md file
ash1794/vibe-engineering · AGENTS.md
git:20261006.c9fd7be · audit A · 165 stars
CLAUDE.md CLAUDE.md file
ash1794/vibe-engineering · CLAUDE.md
git:20261006.c9fd7be · audit A · 165 stars
vibe-acceptance-gate SKILL.md skill
ash1794/vibe-engineering · plugins/vibe-engineering/skills/vibe-acceptance-gate/SKILL.md · Validates completed work against defined acceptance criteria. Use after completing a task that has specific success…
git:20260925.f6554ff · audit A · 165 stars
vibe-anti-rationalization-check SKILL.md skill
ash1794/vibe-engineering · plugins/vibe-engineering/skills/vibe-anti-rationalization-check/SKILL.md · Catches shortcuts and reward hacking — weakening or deleting tests to make them pass, hard-coding expected outputs…
git:20260928.7d7cde1 · audit A · 165 stars
vibe-cherry-pick-integration SKILL.md skill
ash1794/vibe-engineering · plugins/vibe-engineering/skills/vibe-cherry-pick-integration/SKILL.md · Safely integrates commits from parallel agent branches using sequential cherry-pick. Use after parallel work completes…
git:20260925.f6554ff · audit A · 165 stars
vibe-concurrent-test-safety SKILL.md skill
ash1794/vibe-engineering · plugins/vibe-engineering/skills/vibe-concurrent-test-safety/SKILL.md · Audits tests for concurrency safety — race conditions, shared mock state, cleanup ordering. Use when writing tests that…
git:20260925.f6554ff · audit A · 165 stars
vibe-coverage-enforcer SKILL.md skill
ash1794/vibe-engineering · plugins/vibe-engineering/skills/vibe-coverage-enforcer/SKILL.md · Enforces tiered test coverage standards with three dimensions — line coverage by tier, spec-to-test traceability, and…
git:20260925.f6554ff · audit A · 165 stars
vibe-decision-journal SKILL.md skill
ash1794/vibe-engineering · plugins/vibe-engineering/skills/vibe-decision-journal/SKILL.md · Extracts and records architectural decisions from diffs, conversation context, and explicit choices. Supports automatic…
git:20261007.24cccad · audit A · 165 stars
vibe-devil-advocate-review SKILL.md skill
ash1794/vibe-engineering · plugins/vibe-engineering/skills/vibe-devil-advocate-review/SKILL.md · Challenges a recommendation, design, large change, or any artifact submitted for hard review (spec, proposal, policy…
git:20261006.c9fd7be · audit A · 165 stars
vibe-doc-quality-gate SKILL.md skill
ash1794/vibe-engineering · plugins/vibe-engineering/skills/vibe-doc-quality-gate/SKILL.md · Performs a fast 6-point quality check for technical documents (specs, design docs, READMEs). Use after editing any…
git:20260925.f6554ff · audit A · 165 stars
vibe-flake-root-cause SKILL.md skill
ash1794/vibe-engineering · plugins/vibe-engineering/skills/vibe-flake-root-cause/SKILL.md · Refuses "flaky" as a diagnosis. Turns an intermittent failure into a reproduction by isolating it from the environment…
git:20260928.7d7cde1 · audit A · 165 stars
vibe-fuzz-parser-inputs SKILL.md skill
ash1794/vibe-engineering · plugins/vibe-engineering/skills/vibe-fuzz-parser-inputs/SKILL.md · Generates fuzz test scaffolding for parsers handling external input (YAML, JSON, config files, user input). Seeds…
git:20261007.24cccad · audit A · 165 stars

Every file in ash1794/vibe-engineering

Browse by kind, by grade A, or by owner.