What methods and tools did you use to test the API in your last project?

To test the API in the last project, I used several methods and tools:

• Postman — for manual testing of requests, checking responses, headers, and statuses.
• Automated tests based on REST-assured (Java) or pytest + requests (Python) — for creating regression tests that verify the correctness of the API when changes are made.
• Swagger/OpenAPI — for validating the documentation against the actual API.
• Integration level testing — checking the interaction of the API with the database and other services.

Here's a simple example of a Python test using requests and pytest:

import requests

def test_get_user():
    response = requests.get('https://api.example.com/users/1')
    assert response.status_code == 200
    data = response.json()
    assert 'id' in data and data['id'] == 1

This approach allows for quick error detection and quality control of the API.