Functional API Testing
Guaranteeing Reliable Backend Interfaces
Functional API Testing focuses on verifying that your Application Programming Interfaces (APIs) behave exactly as specified — returning correct data, handling errors appropriately, respecting authorization rules, and supporting the intended business logic. In modern distributed architectures, where frontend, mobile, and backend services communicate via APIs, functional tests ensure that APIs deliver correct responses and interact properly with other components.
Our Approach : Validate API Behavior According to Specifications
Nous nous assurons que les données qui entrent et sortent de votre système sont exactes et conformes.
Endpoint Validation
We systematically call each API endpoint with a range of valid and invalid inputs to confirm correct behavior: success responses (e.g., 200/201), error handling (e.g., 400/404/500), and schema conformity. This ensures that each endpoint works according to its specification.
Data Accuracy & Business Logic
API responses often reflect underlying business rules and data transformations. We verify that returned data values are correct and consistent with expected logic, including conditional and edge cases.
Error Handling & Edge Cases
We test how the API handles unexpected or malformed requests to ensure that it fails gracefully with meaningful feedback, correct HTTP error codes, and no security leaks (e.g., stack traces).
Leverage our expertise
Our Focus: The Benefits of Logic Pill
- Early Defect Detection Catch API logic issues before they reach end users.
- Improved Reliability: Ensure your application behaves consistently across environments.
- Automated Regression Safety Net: Functional API tests serve as a baseline that guards against regressions following feature changes.
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