Pester Migration

Q: What is a Claude Code skill and how does the Pester Migration skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Pester Migration is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: General · Sub-category: general-misc · Last updated: 2026-08-24

Pester migration skill for upgrading PowerShell Pester test suites across major versions — v3→v4, v4→v5, and v5→v6. Covers the Discovery/Run two-phase model, moving setup into BeforeAll, $PSScriptRoot vs $MyInvocation, mock changes (Assert-MockCalled → Should -Invoke, removed fall-through), Invoke-Pester parameters → PesterConfiguration, data-driven -ForEach/-TestCases, and the v6 breaking changes. Use when the user asks to upgrade, migrate, or modernize Pester tests, fix *.Tests.ps1 files that broke after bumping the Pester version, or convert legacy Should / Invoke-Pester syntax.

Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

Pester is the test framework for PowerShell. Test files end in *.Tests.ps1 and use Describe / Context / It blocks with Should assertions. This skill upgrades an existing suite from one major Pester version to the next and gets it green again.

What this skill does

Pester Migration is a community-contributed Claude Code skill in the general-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/pester-migration/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when the user asks to upgrade, migrate, or modernize Pester tests, fix *.Tests.

Who uses this skill

The Pester Migration Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 196,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/pester-migration
curl -L https://claudskills.com/skills/pester-migration/SKILL.md \
  -o ~/.claude/skills/pester-migration/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/pester-migration/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/pester-migration/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\pester-migration\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Pester Migration Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/pester-migration/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Pester Migration skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Pester Migration skill?

Use Pester Migration when your Claude Code task falls under the General category — specifically in the general misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Pester Migration" or describe the task and let Claude pick). Browse related skills at /category/general/.

What is a Claude Code skill and how does the Pester Migration skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Pester Migration is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/github/awesome-copilot/blob/HEAD/skills/pester-migration/SKILL.md
License: MIT
Author: github
Website: https://awesome-copilot.github.com/

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

github. (2026). Pester Migration [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/pester-migration/

BibTeX

@misc{pester-migration-2026,
  author    = {github},
  title     = {Pester Migration [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/pester-migration/}
}

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

[![ClaudSkills](https://claudskills.com/badge/pester-migration.svg)](https://claudskills.com/skills/pester-migration/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade A · scanned 2026-09-28 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/pester-migration/#security)

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Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

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