Example requests and responses in Postman - Test Execution Trace

Test Overview

This test sends a GET request to a sample API endpoint and verifies that the response status code is 200 and the response body contains the expected data.

Test Code - Postman

Postman

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

pm.test("Response has expected user data", function () {
    const jsonData = pm.response.json();
    pm.expect(jsonData).to.have.property('user');
    pm.expect(jsonData.user).to.have.property('id').that.is.a('number');
    pm.expect(jsonData.user).to.have.property('name').that.is.a('string');
});

Execution Trace - 3 Steps

Step	Action	System State	Assertion	Result
1	Test starts and sends GET request to https://api.example.com/user/1	Postman sends HTTP GET request to the API endpoint	-	PASS
2	Receives HTTP response from the server	Response status code is 200, response body contains JSON with user data	Check that response status code is 200	PASS
3	Parse JSON response body	JSON object with user property is available	Verify response JSON has 'user' property with 'id' as number and 'name' as string	PASS

Failure Scenario

Failing Condition: Response status code is not 200 or response JSON does not contain expected user data

Execution Trace Quiz - 3 Questions

What does the test verify first after sending the request?

A That the response status code is 200

B That the response body is empty

C That the request method is POST

D That the response time is less than 1 second

Key Result

Always verify the response status code before checking the response body to ensure the API call was successful.