Case Study · 2025
API Tests Generator
-60% API test setup time
+endpoint coverage
Faster API regression
The Test API Generator is an internal tool developed within the team to bridge the gap between manual testing and API automation. It allows testers to upload a Swagger/OpenAPI schema and automatically generate structured API test cases.
The goal was to reduce repetitive work and accelerate API coverage.
OpenAPI · REST · Test generation logic · Python
Challenge
Manual testers often validate APIs using Postman collections without reusable automation. This leads to:
- Repetitive manual effort
- Inconsistent test coverage
- Limited regression reliability
- Slow onboarding for new endpoints
We needed a solution that would simplify automation without requiring deep programming knowledge.
Approach
The application analyzes the provided OpenAPI schema and automatically generates baseline API tests for all documented endpoints.
Users can optionally provide additional instructions to customize validation rules, edge cases or data constraints.
If no custom input is provided, the system generates default validation scenarios including:
- Status code checks
- Schema validation
- Required field validation
- Basic negative cases
This approach enables fast creation of structured, repeatable API regression suites.
Impact
- Reduced API test creation time by approximately 50–60%
- Increased API regression coverage across documented endpoints
- Enabled manual testers to contribute to automation workflows
- Improved consistency of API validation across projects
- Reduced risk of undocumented endpoint gaps
The tool demonstrates my ability to design solutions that scale QA impact beyond individual execution.