Load testing basics (Postman) - Test Execution Trace

Test Overview

This test simulates multiple users sending requests to an API endpoint using Postman to check how the system handles load. It verifies that the API responds successfully under the simulated load.

Test Code - Postman

Postman

pm.test("Status code is 200", function () {
    pm.response.to.have.status(200);
});

// In Postman Collection Runner or Postman Load Testing, set iterations to 50 to simulate load

Execution Trace - 6 Steps

Step	Action	System State	Assertion	Result
1	Test starts in Postman Collection Runner with 50 iterations	Postman is ready to send requests repeatedly to the API endpoint	-	PASS
2	Postman sends the first API request	API server receives the request and processes it	-	PASS
3	Postman receives the response for the first request	Response status code is 200 OK	Check that response status code is 200	PASS
4	Postman sends remaining 49 requests sequentially	API server processes each request under load	-	PASS
5	Postman receives responses for all requests	All responses have status code 200	Verify all responses have status 200	PASS
6	Test completes and Postman shows summary report	Report shows 50 requests sent, all passed	Confirm no failed requests	PASS

Failure Scenario

Failing Condition: API server returns status codes other than 200 during load

Execution Trace Quiz - 3 Questions

What does the test verify in this load test?

A That the API response time is less than 1 second

B That the API returns data in JSON format

C That the API responds with status 200 under load

D That the API endpoint URL is correct

Key Result

Always verify the API response status codes during load testing to ensure the system handles multiple requests without errors.