contract-testing

Prevent Zod schema and JSON fixture drift by mapping each shared fixture to its corresponding schema and asserting parse success or failure with Vitest. This catches validation regressions before merging any contract changes.

You test invalid payloads by crafting specific invalid JSON fixtures alongside valid ones and asserting that Zod parsing rejects them. This ensures your schema validation suite covers both expected successes and failures.

Contract testing with Zod fixtures validates shared JSON payloads against defined schemas to catch regressions. It anchors fixtures to schemas, ensuring payload compatibility before CI merges any contract modifications.

Yes, you need to create fixtures for both valid and invalid schema coverage. Enforcing both scenarios ensures Vitest suites can comprehensively assert Zod schema compatibility and guard against payload validation regressions.

Validate shared contracts by running Vitest-powered Zod parsing against all JSON fixtures in the contracts package. This suite acts as a regression guardrail, refusing merges until all fixture validations pass.

Yes, you can use this for regression testing when modifying a LoginRequestSchema by updating the corresponding fixtures and running the validation suite to confirm both valid and invalid crafted data behave as expected.