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Agent skill

Freeze Tests

by proffesor-for-testing in proffesor-for-testing/agentic-qe

A skill your agent uses when refactoring production code and you want to ensure test files are not modified.

MITAuto-check passedDevelopment

Install Freeze Tests

skills CLI
$ npx skills add proffesor-for-testing/agentic-qe --skill freeze-tests -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install proffesor-for-testing/agentic-qe freeze-tests --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/proffesor-for-testing/agentic-qe.git skills-src && mkdir -p .claude/skills && cp -r skills-src/assets/skills/freeze-tests .claude/skills/freeze-tests && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
freeze-tests
GitHub stars
494
Token cost
~451 tokens
SKILL.md length
123 words
Files
2 (incl. scripts)
Skills in repo
95
Repo updated
First seen
Licence
MIT

At a glance

A skill your agent uses when refactoring production code and you want to ensure test files are not modified.

  • Works in 3 steps: Refactoring: Changing code structure… → Performance optimization: Making code… → Dependency updates: Upgrading libraries…
  • Refactoring production code and you want to ensure test files are not modified
  • SKILL.md covers What It Does, Activation, Hook Configuration and Enforcement Logic, plus 2 more sections
  • Runs Shell scripts from its folder; calls tsx

What it does

Freeze Tests is an agent skill from proffesor-for-testing/agentic-qe. Use when refactoring production code and you want to ensure test files are not modified. Activate with /freeze-tests to block all edits to test files for safe refactoring.

Its SKILL.md is about 450 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including scripts (for example `scripts/block-test-edits.sh`).

It sits in Development, covering Refactoring. The repository describes itself as: Agentic QE Fleet is an open-source AI-powered QA/QE platform designed for use with Coding Agents (works best with Claude Code) featuring specialized agents and skills to support… The licence is MIT.

When your agent uses it

  • Refactoring production code and you want to ensure test files are not modified
  • Tasks that involve Refactoring

Example prompts

  • “/freeze-tests”

Requirements

  • A Bash shell

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. Refactoring: Changing code structure without changing behavior
  2. Performance optimization: Making code faster without changing logic
  3. Dependency updates: Upgrading libraries while preserving behavior

What it can do on your machine

Read from SKILL.md and the folder at commit 829d030. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 1 file in scripts/ (Shell), which the agent can run.

    Shell commands in SKILL.md call:

    • tsx

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Freeze Tests loads about 451 tokens when it runs. Until then it costs about 46 tokens; SKILL.md has 123 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~46
When it runs · the whole SKILL.md, loaded when a task matches
~451

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from proffesor-for-testing/agentic-qe at commit 829d030, republished under its MIT licence (© proffesor-for-testing). 123 words, ~451 tokens.

Download SKILL.mdSave it as .claude/skills/freeze-tests/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
freeze-tests
description
Use when refactoring production code and you want to ensure test files are not modified. Activate with /freeze-tests to block all edits to test files for safe refactoring.
user-invocable
true

Freeze Tests Mode

When activated, blocks all modifications to test files. Use during refactoring to ensure behavior (as captured by tests) is preserved.

What It Does

Blocks Write and Edit operations on any file matching test patterns:

  • **/*.test.{ts,js,tsx,jsx}
  • **/*.spec.{ts,js,tsx,jsx}
  • **/__tests__/**
  • **/tests/**

Activation

/freeze-tests

Deactivate with /freeze-tests off.

Hook Configuration

json
{
  "hooks": {
    "PreToolUse": [
      {
        "matcher": "Write|Edit",
        "hook": ".claude/skills/freeze-tests/scripts/block-test-edits.sh",
        "condition": "file matches **/*.test.* OR **/*.spec.* OR **/__tests__/** OR **/tests/**"
      }
    ]
  }
}

Enforcement Logic

bash
#!/bin/bash
# block-test-edits.sh
FILE="$1"

if echo "$FILE" | grep -qP '\.(test|spec)\.(ts|js|tsx|jsx)$|__tests__|/tests/'; then
  echo "BLOCKED: Test files are frozen during refactoring."
  echo "If tests need updating, deactivate with: /freeze-tests off"
  exit 1
fi

When to Use

  1. Refactoring: Changing code structure without changing behavior
  2. Performance optimization: Making code faster without changing logic
  3. Dependency updates: Upgrading libraries while preserving behavior

Gotchas

  • Frozen tests can't be fixed if they break during refactoring — that's the point (the refactoring broke behavior)
  • If a refactoring requires test changes, it's not a pure refactoring — deactivate and treat as a feature change
  • This doesn't prevent running tests — only modifying test files

© proffesor-for-testing, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file (scripts) in assets/skills/freeze-tests of proffesor-for-testing/agentic-qe.

  • SKILL.md
  • scripts/block-test-edits.sh

Open the folder on GitHubat commit 829d030

Compare with similar skills

Freeze Tests next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Freeze Tests compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Freeze Tests this skillproffesor-for-testing/agentic-qe494—~451Automated safety check: PassMIT
Guidelinesakash-network/node1.1k22 repos~577Automated safety check: PassMIT
Component Refactoringlangflow-ai/langflow156k—~3.5kAutomated safety check: PassMIT
Migrate Core Code to Submodulestinyhumansai/openhuman42k—~2.6kAutomated safety check: PassGPL-3.0
Systematic Code Refactoringluongnv89/claude-howto42k—~3kAutomated safety check: PassMIT
Codexskills-directory/skill-codex1.5k3 repos~1.8kAutomated safety check: PassMIT

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Categories

Questions about Freeze Tests

What does Freeze Tests do?

A skill your agent uses when refactoring production code and you want to ensure test files are not modified. Freeze Tests is an agent skill from proffesor-for-testing/agentic-qe. Use when refactoring production code and you want to ensure test files are not modified.

When should I use Freeze Tests?

Freeze Tests fits situations like: refactoring production code and you want to ensure test files are not modified; tasks that involve Refactoring.

How do I install Freeze Tests in Claude Code?

Run `npx skills add proffesor-for-testing/agentic-qe --skill freeze-tests -a claude-code`. Or copy the skill folder (assets/skills/freeze-tests in proffesor-for-testing/agentic-qe) into .claude/skills/freeze-tests in your project. Claude Code loads it when a task matches its description.

How do I install Freeze Tests in Codex?

Run `npx skills add proffesor-for-testing/agentic-qe --skill freeze-tests -a codex`. Or copy the skill folder (assets/skills/freeze-tests in proffesor-for-testing/agentic-qe) into .agents/skills/freeze-tests in your project. Codex loads it when a task matches its description.

Can I use Freeze Tests in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add proffesor-for-testing/agentic-qe --skill freeze-tests -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/freeze-tests, .gemini/skills/freeze-tests, .github/skills/freeze-tests and .opencode/skills/freeze-tests in your project.

What does Freeze Tests need to run?

Going by SKILL.md and its folder, Freeze Tests needs a shell for the scripts in its folder and the command-line tools its instructions call (tsx). Our summary lists: A Bash shell.

Does Freeze Tests access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Freeze Tests safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Freeze Tests use?

Freeze Tests is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Freeze Tests use?

About 451 tokens (SKILL.md is roughly 1.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Freeze Tests?

Skills that share tags, products or a category with Freeze Tests: Guidelines (akash-network/node, 1.1k stars), Component Refactoring (langflow-ai/langflow, 156k stars), Migrate Core Code to Submodules (tinyhumansai/openhuman, 42k stars) and Systematic Code Refactoring (luongnv89/claude-howto, 42k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Freeze Tests?

proffesor-for-testing (a GitHub user) maintains it in proffesor-for-testing/agentic-qe, which has 494 GitHub stars. The repository holds 95 skills in this directory. The repository was last updated on October 4, 2026.

Source: proffesor-for-testing/agentic-qe on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.