php-testing

php-testing is a skill for Claude Code, Codex from fusengine/agents. It costs 38 tokens per session (1,224 once invoked), scanned A, original, MIT.

A testing guide for non-Laravel PHP projects that helps choose between PHPUnit and Pest, two tools for checking PHP code automatically.

In plain words
What is it for?
Use it to configure PHPUnit or Pest, organise tests, create test doubles, and plan code-coverage checks.
Why use it?
It removes uncertainty when selecting a test framework and setting up common test files and test doubles such as mocks and stubs.

Skill for Claude CodeCodex

Part of the fuse-php plugin — 6 skills, 1 agent shipped together

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.

agentmods
npx agentmods add skills/fusengine/agents/php-testing
Any agent
npx skills add fusengine/agents --skill php-testing
Clone the repo
git clone --depth 1 https://github.com/fusengine/agents

Made for: Claude Code, Codex.

Or install fuse-php, the plugin that ships this one along with the rest of its 6 skills, 1 agent.

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.

agentmods badge for php-testing

README.md
[![agentmods](https://agentmods.dev/badge/skills/fusengine/agents/php-testing.svg)](https://agentmods.dev/skills/fusengine/agents/php-testing)
Your own site
<a href="https://agentmods.dev/skills/fusengine/agents/php-testing"><img src="https://agentmods.dev/badge/skills/fusengine/agents/php-testing.svg" alt="Measured on agentmods" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,224 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5 $0.00038 $0.01224
Opus 5 $0.00019 $0.00612
Sonnet 5 $0.00008 $0.00245
Haiku 4.5 $0.00004 $0.00122

Measured yesterday against content hash a7074ee142e8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

php-testing 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.

plugins/php-expert/skills/php-testing/SKILL.md · 137 lines

How it starts

The opening of the file, as written. The whole thing — 137 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Includes a decision matrix for choosing between the two (team preference, not capability), plus templates for phpunit.xml, Pest.php setup, and test doubles (stubs, mocks, fixtures, coverage).

Do NOT use this skill for Laravel test helpers such as RefreshDatabase or HTTP testing — those are covered by laravel-expert's laravel-testing skill. Do NOT use it for static analysis or formatting tooling — that is php-quality-tooling.

PHP Testing

Two frameworks, one engine. Pest is a layer over PHPUnit — both need PHP 8.3+ and share the same runner and assertions underneath.

Agent Workflow (MANDATORY)

Before ANY implementation, use TeamCreate to spawn 3 agents:

  1. fuse-ai-pilot:explore-codebase - Detect existing framework (phpunit.xml vs Pest.php), test layout, PHP version
  2. fuse-ai-pilot:research-expert - Verify latest PHPUnit 12 / Pest 4 docs via Context7/Exa
  3. mcp__context7__query-docs - Check attribute names, test-double API, config schema

After implementation, run fuse-ai-pilot:sniper for validation.


Overview

Framework Style Strength
PHPUnit 12 Class-based, xUnit Enterprise baseline, explicit, widest tooling/CI support
Pest 4 Closure-based, expressive Modern DX, browser + arch + mutation testing, less boilerplate

Pest 4 runs on PHPUnit's engine, so PHPUnit knowledge transfers directly. The choice is about ergonomics and team preference, not capability.


Critical Rules

  1. PHP 8.3+ required - Both PHPUnit 12 and Pest 4 drop older PHP
  2. Attributes only, no annotations - PHPUnit 12 removed docblock annotations (@test, @dataProvider)
  3. Data providers are public static - Non-static providers no longer work
  4. createStub() is not configurable - Configure expectations only on createMock()
  5. One framework per project - Pest or PHPUnit, not both driving the same suite
  6. Mock at boundaries - Network/DB/clock, never internal implementation detail

Read the full file on GitHub · 137 lines

Files

What ships with it

8 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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.

  1. yesterday First seen · 137 lines · 38 tokens per session scan A a7074ee142e8

Subscribe to this mod's changes

php-testing is a skill published in the GitHub repository fusengine/agents (25 stars, last pushed 1mo ago), licensed MIT. It adds 38 tokens to every session and 1,224 once invoked, about $0.0002 per session on Opus 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 2026-09-03.

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