Form-data body in Postman - Test Execution Trace

Test Overview

This test sends a POST request with form-data body to an API endpoint and verifies the response status and returned data.

Test Code - Postman Test Script

Postman

pm.test("POST request with form-data body", function () {
    pm.sendRequest({
        url: 'https://postman-echo.com/post',
        method: 'POST',
        header: {
            'Content-Type': 'application/x-www-form-urlencoded'
        },
        body: {
            mode: 'formdata',
            formdata: [
                { key: 'username', value: 'testuser', type: 'text' },
                { key: 'password', value: 'pass123', type: 'text' }
            ]
        }
    }, function (err, res) {
        pm.expect(err).to.be.null;
        pm.expect(res).to.have.property('code', 200);
        const jsonData = res.json();
        pm.expect(jsonData.form).to.have.property('username', 'testuser');
        pm.expect(jsonData.form).to.have.property('password', 'pass123');
    });
});

Execution Trace - 5 Steps

Step	Action	System State	Assertion	Result
1	Test starts	Postman test runner is ready to execute the test script	-	PASS
2	Sends POST request to https://postman-echo.com/post with form-data body containing username and password	Request is sent with Content-Type multipart/form-data and form fields username=testuser, password=pass123	-	PASS
3	Receives response from server	Response status code 200 OK, response body contains JSON with form data echoed back	Check response code is 200	PASS
4	Parse response JSON and verify form data fields	Response JSON contains form object with username and password keys	Assert form.username equals 'testuser' and form.password equals 'pass123'	PASS
5	Test ends successfully	All assertions passed, test marked as pass	-	PASS

Failure Scenario

Failing Condition: Response status code is not 200 or form data keys are missing or incorrect

Execution Trace Quiz - 3 Questions

What does the test verify after sending the POST request?

A Response contains HTML content

B Request method is GET

C Response status is 200 and form-data fields are correctly echoed

D Form-data keys are missing

Key Result

Always verify both the response status code and the actual data returned when testing API requests with form-data bodies to ensure the server processes the data correctly.