Add Gesso - #812
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wadakatu
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AlexanderKaran,
mbifulco and
philsturgeon
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August 14, 2026 02:33
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What is it?
Gesso is framework-agnostic OpenAPI contract testing for PHP / PHPUnit. It validates requests and responses against an OpenAPI 3.0 / 3.1 / 3.2 description, and — unlike the existing PHP validators — tracks which endpoints, statuses, and content types the test suite actually exercised, reporting coverage as Markdown / JUnit XML / JSON / HTML. First-class adapters for Laravel, Symfony, Pest, and PSR-7.
Against the contribution guidelines
studio-design/gesso, with CI-tested five-minute quickstarts for core PHPUnit, Laravel, Symfony, and Pest.studio-design/openapi-contract-testing). As quality evidence I'd offer instead: schema conversion is pinned against the official JSON Schema Test Suite (3,784 cases, with the 11 deliberate verdict deltas individually documented) and every OpenAPI Initiative example document for 3.0/3.1/3.2 loads cleanly — both corpora pinned by commit SHA and enforced in CI. See docs/conformance.md. Happy to come back later if you'd rather wait for adoption numbers.spectator.md/openapi-psr7-validator.mdand validates againstToolSchema.Disclosure: I maintain the tool.