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Grok Bot+18 agentsTest Suite Generator — Risk-First Unit Tests (Jest, Vitest, Pytest, JUnit, Go)
Turns a function, module, or class into a risk-prioritized unit test suite: a test plan, edge cases, idiomatic test code, coverage gaps, and the commands to run it.
$12
Test Suite Generator — Risk-First Unit Tests (Jest, Vitest, Pytest, JUnit, Go)
Example session with this skill installed
Product: SeatHold venue seat holds
TypeScript + Vitest
Function: evaluateHold(heldAtMs, nowMs, holdMinutes, seatsRequested, seatsAvailable)
Returns: { status: "active" | "expired" | "invalid", reason, expiresAtMs }
Ask: solid unit suite; edge cases matter
- Read your context and instructions
- Compiled the test suite generator
Coverage confidence: STRONG
Tests generated: 18 (Vitest, unit)
Critical paths covered: yes
Plan highlights
- CRITICAL: nowMs === expiresAtMs → expired
- CRITICAL: seatsRequested > seatsAvailable → invalid
- HIGH: active mid-window + expiresAtMs contract
Generated: holdWindow.test.ts with it.each tables, fixed epoch clocks
Run: npx vitest run src/lib/holdWindow.test.ts
JSON: framework vitest, tests_generated 18, critical_paths 5/5
Connects securely to your tools. The creator never sees your data.
What you get
About this skill
The problem
- Blank “write some tests” prompts produce shallow happy-path cases and miss the edges where production breaks.
- Teams need a plan for what to test and why — not only a pile of assertions.
- Framework style matters: Jest, Vitest, Pytest, JUnit 5, and Go testing each have different idioms.
What it does
- Analyzes a function, module, or class and builds a risk-prioritized test plan.
- Enumerates edge cases (boundaries, invalid input, empty values, error paths, and more).
- Generates idiomatic test code for the detected framework (Jest, Vitest, Pytest, JUnit 5, or Go testing).
- Reports missing coverage honestly and lists what to add next.
- Provides exact run commands and a machine-readable Test Suite JSON.
Frameworks & tools
- JavaScript/TypeScript: Jest or Vitest (
describe/it,it.each, spies). - Python: Pytest (fixtures,
parametrize,raises). - Java: JUnit 5 (parameterized tests, clear display names).
- Go: table-driven tests with
testing(and testify only if already used). - Works from pasted code or repo paths your agent can read — no SaaS test cloud required.
Why this beats prompting it yourself
- Risk-first priorities (CRITICAL/HIGH first) instead of random examples.
- A full edge-case taxonomy so boundaries and invalid input are not forgotten.
- Anti-pattern guardrails: no over-mocking, no always-pass asserts, no implementation-detail tests.
- Framework-aware idioms instead of generic pseudocode.
- Review-before-write: tests are draft artifacts until you approve saving them.
How to install
Works the same in every agent - Claude, Cursor, Codex, Copilot and 20+ more.
- 1
Download the ZIP
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- 2
Unzip into your skills folder
Every agent reads skills from one folder on your machine. Drop the unzipped folder in there.
- 3
Ask your agent to use it
Restart the agent if it was already running. It picks the skill up automatically - no config needed.
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Click the path to copy it. Create the folder if it does not exist yet.
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