12 articles
OpenAPI 3.1 introduced full JSON Schema compatibility, webhooks support, and simplified nullable handling. Learn how these changes impact your API test generation, contract validation, and migration strategy.
Schema-first API development designs the API contract before writing implementation code. Learn how this approach enables parallel development, automated test generation, and contract-driven quality gates.
Migrating from Swagger 2.0 to OpenAPI 3.x unlocks richer test generation, better schema validation, and modern tooling. This step-by-step guide covers spec conversion, test suite updates, and CI/CD pipeline adjustments.
Compare the best OpenAPI testing tools for automated test generation, contract validation, and CI/CD integration. Side-by-side analysis of Total Shift Left, Schemathesis, Dredd, Postman, and more.
API schema validation drift detection is the automated process of comparing live API responses against the documented OpenAPI specification to identify undocumented changes in field types, required properties, response formats, and nested structures. When drift goes undetected, it silently breaks API consumers and causes production integration failures.
Generating API tests from an OpenAPI spec is the process of using your existing API specification as the single source of truth to automatically produce comprehensive test suites covering positive, negative, boundary, and schema validation scenarios. This approach eliminates manual test scripting and ensures every endpoint, method, and status code is tested from day one.
API test coverage measures how thoroughly your tests exercise the interface consumers depend on -- endpoints, HTTP methods, status codes, and parameters. Unlike code coverage, which tracks lines executed, API-specific coverage metrics reveal the real gaps that let regressions reach production.
Migrating from Postman to spec-driven testing means transitioning from manually maintained request collections to automated test generation from your OpenAPI specification. This guide provides a step-by-step migration process covering collection auditing, spec validation, test generation, coverage comparison, and CI/CD integration.
Postman vs OpenAPI test automation compares two fundamentally different API testing philosophies: manually building and maintaining request collections versus automatically generating tests from your API specification. Understanding which approach scales determines whether your team spends sprint time writing tests or shipping features.
