Unfragile

codeception/stub is a PHP test-double library in the Codeception ecosystem; none of the candidate sources documents it directly, so the closest PHP mocking and testing options are listed. PHPUnit 8 is the PHP testing framework whose mocking is the most direct alternative, and Symfony's documentation 10 covers PHP framework testing but not stubbing. Java-oriented WireMock 3 and Python's pytest 4 mock or test other stacks.

1
PHPUnitphpunit.dewebsite read, tools not yet checked
PHP testing framework that provides test doubles and mocking for unit tests, a direct alternative to Codeception stubs 8.
Website Docs
+1 community tools built for it
2
Symfony Documentationsymfony.comwebsite read, tools not yet checked
Official documentation for the Symfony PHP framework and its packages, where testing of Symfony projects is covered 10.
Website Docs
+4 community tools built for it
3
WireMockwiremock.orgverified and signed
Open source tool for simulating APIs and software dependencies so tests run without them, though it targets HTTP mocking rather than PHP stubs 3.
Website Docs
+5 community tools built for it
for agents: mock · unittest · wiremock

Sources

3WireMock - flexible, open source API mocking | WireMockwiremock.org · read 2026-10-29
4pytest documentationdocs.pytest.org · read 2026-10-29
8PHPUnit: The testing framework for PHPphpunit.de · read 2026-10-29
10Symfony Documentationsymfony.com · read 2026-10-29

For agents: the 10 actions behind this answer

php-mcp-server-generator · php-mcp-server-generator verified and signed
Generate a complete PHP Model Context Protocol server project with tools, resources, prompts, and tests using the official PHP SDK
vitest · vitest verified and signed
Vitest API and config reference (Jest-compatible) — mocking with vi.*, spies, fake timers, coverage configuration, fixtures, snapshots, and test filtering. Use for Vitest API and configuration questions anywhere in the monorepo; for Studio-specific test strategy and component-test setup, start with
mock · WireMock.Net verified and signed
unittest · pytest verified and signed
yaml · strictyaml verified and signed
test_connection · opensearch-flux found in code, not yet checked
Test connectivity and authentication to an OpenSearch instance. START HERE — call this first before any other migration tool. Auth defaults to IAM; region and service are auto-detected from the endpoint URL.
pypartiql · py-partiql-parser verified and signed
· PHPUnit: The testing framework for PHP website read, tools not yet checked
PHPUnit is the industry-leading test automation framework for software built using PHP.
msgpack · msgspec verified and signed
· Symfony Documentation website read, tools not yet checked
Symfony documentation includes articles, tutorials and books to learn about the Symfony PHP framework and its packages.

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