Response time assertions in Postman - Test Execution Trace

Test Overview

This test sends a request to an API endpoint and verifies that the response time is less than 500 milliseconds. It ensures the API responds quickly enough for good user experience.

Test Code - Postman

Postman

pm.test("Response time is less than 500ms", function () {
    pm.expect(pm.response.responseTime).to.be.below(500);
});

Execution Trace - 3 Steps

Step	Action	System State	Assertion	Result
1	Test starts and sends HTTP request to the API endpoint	Postman sends request and waits for response	-	PASS
2	Postman receives response from API	Response received with status code and response time recorded	-	PASS
3	Test script checks if response time is below 500 milliseconds using pm.expect	Response time value available in pm.response.responseTime	pm.expect(pm.response.responseTime).to.be.below(500);	PASS

Failure Scenario

Failing Condition: Response time is 500 milliseconds or more

Execution Trace Quiz - 3 Questions

What does the test verify about the API response?

A Response body contains specific data

B Response status code is 200

C Response time is less than 500 milliseconds

D Response headers include Content-Type

Key Result

Always include response time assertions to ensure your API meets performance expectations and provides a good user experience.