test-doubles-mocking SKILL.md skillA
test-doubles-mocking from dev-toolings/superpowers-symfony is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add dev-toolings/superpowers-symfony/test-doubles-mocking@git:20261005.625d3c1Pins git:20261005.625d3c1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- dev-toolings/superpowers-symfony
- Path
content/skills/test-doubles-mocking/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261005.625d3c1, committed Oct 5, 2026
- First version recorded
- Sep 17, 2026
- Size
- 2,004 bytes
- Repository stars
- 231
- License
- MIT
Create test doubles with PHPUnit mocks for isolated unit testing in Symfony.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Test Doubles Mocking (Symfony)
## Use when
- A class under test depends on a collaborator that is slow, external or non-deterministic, such as a payment gateway or a message bus.
- An interaction must be verified, such as `persist()` and `flush()` or a dispatched message.
- A repository needs an in-memory fake implementing its interface.
- Choosing between a dummy, stub, mock, spy or fake.
## Default workflow
1. Pick the double by need: stub to feed values, mock to verify a call, fake for a working simplified implementation.
2. Create it with `$this->createMock(Interface::class)` and stub with `->method('charge')->willReturn(...)`.
3. Verify only when the interaction matters: `expects($this->once())->with(...)`, or `$this->callback()` to inspect a dispatched message.
4. Script behavior with `willReturnOnConsecutiveCalls()`, `willThrowException()` or `willReturnCallback()`.
5. For repositories, write an `InMemory` fake implementing the interface.
6. Use `ProphecyTrait` with `prophesize()` and `reveal()` only if the project already relies on Prophecy.
## Guardrails
- Do not mock the class under test; a partial mock (`onlyMethods()`) is a last resort.
…Read the whole file at its exact version.
How to install
mdr add dev-toolings/superpowers-symfony/test-doubles-mocking@sha256:ddd4eec4e5a440d3The line at the top of this page pins the label git:20261005.625d3c1, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_7doyhadqjltmeysj)
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Versions
The registry has recorded 3 versions of this file, between Sep 17, 2026 and Oct 5, 2026, about one every 9 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261005.625d3c1 latest | 2026-10-05 | 625d3c1 | 2,004 B | A | view · diff |
| git:20261005.042befb | 2026-10-05 | 042befb | 1,121 B | A | view · diff |
| git:20260917.3d83f4c | 2026-09-17 | 3d83f4c | 1,150 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (2004 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
dev-toolings/superpowers-symfony · 231 stars · license MIT · pushed 2026-10-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_7doyhadqjltmeysj GET https://markdownregistry.com/api/v1/resolve?ref=dev-toolings/superpowers-symfony/test-doubles-mocking GET https://markdownregistry.com/api/v1/blob/ddd4eec4e5a440d3c7dfb81352a54dab3283fa4c5f7d767d0a3d8f8e96d9a452
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