Play 101 — Pester Test Development 🧪
The golden template — AI-powered Pester 5.x test generation for PowerShell, AST-driven analysis, comprehensive mocking, >90% code coverage.
Build production-grade Pester test suites from PowerShell code. AST analysis identifies testable functions, the builder generates Describe/Context/It blocks with proper mocking, the reviewer validates assertion quality and coverage gaps, and the tuner eliminates flaky tests and optimizes CI/CD integration.
Quick Start
cd solution-plays/101-pester-test-development
code .
# Use @builder to generate tests, @reviewer to audit, @tuner to optimizeArchitecture
| Component | Purpose |
|---|---|
| PowerShell AST | Parse source code to identify testable functions |
| Pester 5.x | Test framework with Describe/Context/It blocks |
| Mock System | InModuleScope, Mock, Should assertions |
| Code Coverage | Invoke-Pester with -CodeCoverage for >90% target |
Pre-Tuned Defaults
- Coverage: >90% target · function-level · branch analysis
- Mocking: InModuleScope for module functions · Mock external deps
- CI/CD: GitHub Actions + Azure DevOps pipeline templates
- Quality: No flaky tests · deterministic assertions · proper teardown
DevKit (AI-Assisted Development)
| Primitive | What It Does |
|---|---|
agent.md | Root orchestrator with builder→reviewer→tuner handoffs |
copilot-instructions.md | Pester domain (AST, mocking, coverage, CI/CD patterns) |
| 3 agents | Builder (gpt-4o), Reviewer (gpt-4o-mini), Tuner (gpt-4o-mini) |
| 4 skills | Deploy (149 lines), Evaluate (173 lines), Generate Tests (180 lines), Tune (221 lines) |
| 4 prompts | /deploy, /test, /review, /evaluate with agent routing |
The Golden Template
Play 101 is special — it was the first v2 play and established the patterns used by all 100 other plays:
- builder→reviewer→tuner handoff chain
- Model differentiation (gpt-4o for builder, gpt-4o-mini for reviewer/tuner)
- 4 agent-routed prompts
- Skills with 100+ lines of domain procedures
Cost Estimate
| Service | Dev/mo | Prod/mo | Enterprise/mo |
|---|---|---|---|
| Azure OpenAI | $15 (PAYG) | $150 (PAYG) | $400 (PAYG) |
| Azure DevOps | $0 (Free tier) | $40 (Basic) | $120 (Basic + Hosted) |
| Azure Storage | $1 (LRS Hot) | $10 (LRS Hot) | $30 (ZRS Hot) |
| Application Insights | $0 (Free) | $15 (Pay-per-GB) | $40 (Pay-per-GB) |
| Total | $16 | $215 | $590 |
📖 Full documentation · 🌐 frootai.dev/solution-plays/101-pester-test-development · 📦 FAI Protocol
FAI Manifest
| Field | Value |
|---|---|
| Play | 101-pester-test-development |
| Version | 1.0.0 |
| Knowledge | T3-Production-Patterns, O3-MCP-Tools |
| WAF Pillars | reliability, operational-excellence, security |
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