What is testing.fix_input_output_vars?

A test-formatting skill for changing how a test represents its inputs and outputs. It uses multiline strings, indentation handling, whole-output comparisons, and shared helper methods.

Use it to revise selected tests, compare complete outputs with self.assert_equal(), extract repeated logic into helpers, and run the tests afterward.

Consistent input and output handling makes tests easier to read and reduces repeated setup code without changing what the test is meant to check.

testing.fix_input_output_vars — Skill for Claude Code by gpsaggese

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add gpsaggese/helpers --skill testing.fix_input_output_vars

Clone the repo

git clone --depth 1 https://github.com/gpsaggese/helpers

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/gpsaggese/helpers/testing.fix_input_output_vars/github.svg)](https://agentmods.dev/skills/gpsaggese/helpers/testing.fix_input_output_vars)

Your own site

<a href="https://agentmods.dev/skills/gpsaggese/helpers/testing.fix_input_output_vars"><img src="https://agentmods.dev/badge/skills/gpsaggese/helpers/testing.fix_input_output_vars/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/gpsaggese/helpers/testing.fix_input_output_vars"><img src="https://agentmods.dev/badge/skills/gpsaggese/helpers/testing.fix_input_output_vars.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 9 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 177 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00009	$0.00177
Opus 5.5	$0.00004	$0.00071
Sonnet 5.5	$0.00002	$0.00035
Haiku 4.5	$0.00001	$0.00018

Measured yesterday against content hash e2b63f71ba9f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

testing.fix_input_output_vars scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/testing.fix_input_output_vars/SKILL.md · 24 lines

What it actually says

Goal

Transform the test method so that:
- The inputs and outputs are strings with """ and dedent
- The output is checked with self.assert_equal()
- Follow .claude/skills/testing.rules.md:
  - # Writing Test Code
  - ## Code Formatting in Tests
  - # Test Input and Output Handling
  - ## Compare Whole Output with assert_equal, Not Piecewise
Factor out as much code as possible into helper functions
- Follow ## Use Helper Methods When You Have Repetitive Tests in .claude/skills/testing.rules.md
Do not change the intent of the test

Verification

Run the tests to make sure they pass

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

yesterday First seen · 24 lines · 9 tokens per session scan A e2b63f71ba9f

Subscribe to this mod's changes

testing.fix_input_output_vars is a skill published in the GitHub repository gpsaggese/helpers (158 stars, last pushed today), licensed Apache-2.0. It adds 9 tokens to every session and 177 once invoked, about $0.0000 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-11-06.

Languages Python Testing Unit testing

testing.fix_input_output_vars next to 6 skills from other repositories
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