REST API fundamentals review in Postman - Test Execution Trace

Test Overview

This test sends a GET request to a REST API endpoint to retrieve user data. It verifies that the response status is 200 OK and that the response body contains the expected user ID and name.

Test Code - Postman

Postman

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

pm.test("Response has correct user data", function () {
    const jsonData = pm.response.json();
    pm.expect(jsonData.id).to.eql(1);
    pm.expect(jsonData.name).to.eql("John Doe");
});

Execution Trace - 4 Steps

Step	Action	System State	Assertion	Result
1	Send GET request to https://api.example.com/users/1	Postman sends HTTP GET request to the API endpoint	-	PASS
2	Receive HTTP response from the server	Response received with status code 200 and JSON body {"id":1,"name":"John Doe"}	-	PASS
3	Check that response status code is 200	Response status code is 200 OK	pm.response.to.have.status(200)	PASS
4	Parse response JSON and verify user id and name	Response JSON parsed as {id:1, name:"John Doe"}	pm.expect(jsonData.id).to.eql(1) and pm.expect(jsonData.name).to.eql("John Doe")	PASS

Failure Scenario

Failing Condition: Response status code is not 200 or user data does not match expected values

Execution Trace Quiz - 3 Questions

What does the test verify first after sending the GET request?

A That the response status code is 200

B That the response body contains a list of users

C That the request method is POST

D That the response time is less than 1 second

Key Result

Always verify both the HTTP status code and the response body content to ensure the API behaves as expected.