Running a collection in Postman - Test Execution Trace

Test Overview

This test runs a Postman collection to verify that all API requests respond with status code 200, ensuring the APIs are reachable and working as expected.

Test Code - Newman (Postman CLI)

Postman

const newman = require('newman');

newman.run({
    collection: require('./MyCollection.json'),
    reporters: 'cli'
}, function (err, summary) {
    if (err) { throw err; }
    const failures = summary.run.failures;
    if (failures.length > 0) {
        console.error('Test failed: Some requests did not return status 200');
        process.exit(1);
    } else {
        console.log('All requests passed with status 200');
    }
});

Execution Trace - 6 Steps

Step	Action	System State	Assertion	Result
1	Test starts by invoking Newman to run the Postman collection file 'MyCollection.json'.	Newman CLI initializes and loads the collection with all API requests.	-	PASS
2	Newman sends the first API request defined in the collection.	Request sent to API endpoint; waiting for response.	-	PASS
3	Newman receives response and checks if status code is 200.	Response received with HTTP status code 200.	Verify response status code equals 200.	PASS
4	Newman repeats sending requests and checking status codes for all requests in the collection.	All requests executed sequentially with responses received.	Verify each response status code equals 200.	PASS
5	Newman completes running the collection and summarizes results.	Summary shows zero failures.	Check that no request failed the status code 200 check.	PASS
6	Test ends with console output confirming all requests passed.	Console displays 'All requests passed with status 200'.	-	PASS

Failure Scenario

Failing Condition: One or more API requests return a status code other than 200.

Execution Trace Quiz - 3 Questions

What does the test verify for each API request in the collection?

A That the response status code is 200

B That the response body contains JSON

C That the request URL is correct

D That the request method is POST

Key Result

Always verify the HTTP status code for each API request when running a collection to ensure the APIs are responding correctly.