What is USET?

USET (Unified Script Environment for Testing) is an internal framework for automated testing in Python, developed at Yandex. It is designed for creating and managing test scenarios, running tests on distributed infrastructure, and collecting results.

The main components and features of USET include:

• Test description language: Allows writing test scenarios in Python using specialized libraries and USET API.
• Test manager: Ensures the execution of test collections on remote hosts or in test laboratories, manages dependencies and execution order.
• Artifact collector: Gathers logs, dumps, and other necessary data after test execution for analysis.
• Reporting system: Presents test execution results in a readable format, often with a web interface for viewing the history of runs and detailed information on each test.
• Distributed execution: Supports running tests on a large number of machines in parallel, speeding up testing.

# Example of a test scenario structure in USET (conditional)
import uset  # Import specialized USet libraries

class MyTest(uset.TestCase): # Inherit from USet's base test class

    def test_example(self):
        # Use USET API to interact with the tested object or system
        target = uset.get_target("service_name")
        response = target.make_request("/api/v1/status")
        self.assertEqual(response.status_code, 200)
        self.assertIn("status", response.json())

    def cleanup(self):
        # Code to clean up resources after test execution
        print("Cleaning up...")

USET is actively used at Yandex for automating testing of various services and products, from search to cloud solutions, providing a high degree of automation and quality control.