Nested object assertions in Postman - Test Execution Trace

Test Overview

This test sends a GET request to an API endpoint and verifies nested objects in the JSON response. It checks that the user details and address fields exist and have expected values.

Test Code - Postman

Postman

pm.test("Verify nested user details and address", function () {
    const jsonData = pm.response.json();
    pm.expect(jsonData).to.have.property('user');
    pm.expect(jsonData.user).to.have.property('name', 'John Doe');
    pm.expect(jsonData.user).to.have.property('address');
    pm.expect(jsonData.user.address).to.include({
        city: 'New York',
        zip: '10001'
    });
});

Execution Trace - 8 Steps

Step	Action	System State	Assertion	Result
1	Test starts	Postman test runner is ready	-	PASS
2	Send GET request to API endpoint	API server receives request and sends JSON response with user details	-	PASS
3	Parse JSON response body	Response body parsed into jsonData object	-	PASS
4	Check if 'user' property exists in jsonData	jsonData contains 'user' object	jsonData has property 'user'	PASS
5	Check if 'name' property of user equals 'John Doe'	jsonData.user.name is 'John Doe'	jsonData.user.name === 'John Doe'	PASS
6	Check if 'address' property exists in user object	jsonData.user.address object exists	jsonData.user has property 'address'	PASS
7	Check if 'city' and 'zip' in address match expected values	jsonData.user.address.city is 'New York' and zip is '10001'	jsonData.user.address includes {city: 'New York', zip: '10001'}	PASS
8	Test ends with all assertions passing	All nested object assertions verified successfully	-	PASS

Failure Scenario

Failing Condition: The 'address' property is missing or has incorrect values in the response JSON

Execution Trace Quiz - 3 Questions

What does the test check first in the JSON response?

A If the 'city' value is 'New York'

B If the 'user' property exists

C If the 'address' property exists

D If the response status is 404

Key Result

When testing nested JSON objects, verify each nested property step-by-step to catch missing or incorrect data clearly.