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.
npx skills add krzysztofsurdy/code-virtuoso --skill symfony-testinggit clone --depth 1 https://github.com/krzysztofsurdy/code-virtuosoWrote 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.
[](https://agentmods.dev/skills/krzysztofsurdy/code-virtuoso/symfony-testing)<a href="https://agentmods.dev/skills/krzysztofsurdy/code-virtuoso/symfony-testing"><img src="https://agentmods.dev/badge/skills/krzysztofsurdy/code-virtuoso/symfony-testing/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.
<a href="https://agentmods.dev/skills/krzysztofsurdy/code-virtuoso/symfony-testing"><img src="https://agentmods.dev/badge/skills/krzysztofsurdy/code-virtuoso/symfony-testing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00072 | $0.02757 |
| Opus 5.5 | $0.00029 | $0.01103 |
| Sonnet 5.5 | $0.00014 | $0.00551 |
| Haiku 4.5 | $0.00007 | $0.00276 |
Grade A, and why
symfony-testing scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Symfony testing
PHPUnit knowledge alone does not predict how Symfony tests fail. The container removes private services, the kernel reboots between requests, database state leaks between tests, and the assertion API changes with the Symfony minor and the PHPUnit major. This skill gives the version facts, the choice of test type, a Symfony-specific order for red-green, and a pitfall list that was checked by running a Symfony 8.1 project.
The generic procedure is in the tdd playbook and the strategy, doubles and flakiness rules are in the testing skill. This skill does not repeat them.
Check the installed versions first
Memory of "PHPUnit" or "Symfony" is often a major behind. Read the lock file before writing a test:
jq -r '(.packages + ."packages-dev")[] | select(.name|test("^(phpunit/phpunit|symfony/framework-bundle|zenstruck/(foundry|messenger-test)|dama/doctrine-test-bundle|symfony/panther|api-platform/(core|symfony))$")) | .name+" "+.version' composer.lock
Version matrix
PHPUnit (what changes in the tests you write):
| Version | Min PHP | Changes that bite |
|---|---|---|
| 10 | 8.1 | Attributes introduced. Non-static data providers deprecated |
| 11 | 8.2 | Doc-comment metadata deprecated. Non-static, non-public and parameterized data providers removed |
| 12 | 8.3 | Doc-comment metadata removed: @test and @dataProvider stop working silently. expects() on stubs removed. From 12.5, a mock without expectations raises a notice |
| 13 | 8.4 | Sealed test doubles added. any() matcher hard-deprecated. PHP 8.3 dropped |
Symfony (what changes in the test API):
| Version | Min PHP | Test API facts |
|---|---|---|
| 7.4 LTS | 8.2 | static::getContainer(), loginUser(), mailer and HttpClient assertions, CommandTester for commands |
| 8.0 and 8.1 | 8.4 | 8.1 adds runCommand() with console assertions, assertSessionHasFlashMessage(), Closure factories for non-shared services, mock_response_factory per scoped client and true or false values |
What ships with it
6 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.
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.
- 3d ago First seen · 128 lines · 72 tokens per session scan A dea6fef9c7c0
symfony-testing is a skill published in the GitHub repository krzysztofsurdy/code-virtuoso (36 stars, last pushed 2d ago), licensed MIT. It adds 72 tokens to every session and 2,757 once invoked, about $0.0003 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 2026-10-23.
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