Submitting forms

Testing form submissions is a crucial part of load testing. Applications often rely on form inputs for various functions, including user registration, login, feedback, and more. In this documentation, we'll explore how to simulate these activities with LoadForge using the locust.io platform.

There are different methods and data types used in submitting forms, ranging from traditional multipart web forms to submitting JSON data. Let's walk through these different methods.

Submitting Standard Web Forms

A standard web form usually involves sending data as part of a POST request. Here's a guide on how to simulate the submission of a standard form to an endpoint, for example, /contact.

Example: Submitting a Contact Form

from locust import HttpUser, task, between


class QuickstartUser(HttpUser):


    @task(2)
    def contact(self):
        self.client.post("/contact", {
            'email': 'user@domain.com',
            'subject': 'Hello from LoadForge!',
            'message': 'This is a sample message sent during a LoadForge test.'
        })

For further insights and advanced use-cases on this type of form submission, refer to:

• Login examples

Submitting JSON Data

In modern web applications, interacting with APIs often involves sending and receiving JSON data. Here's how you can set up a task in LoadForge to send a JSON payload.

Example: JSON Data POST Request

import json
from locust import HttpUser, task, between


class QuickstartUser(HttpUser):
    wait_time = between(3, 5)


    @task(1)
    def post_json(self):
        payload = {
            'key': 'value',
            'question': 'answer123'
        }


        headers = {'content-type': 'application/json'}
        response = self.client.post("/post/endpoint", data=json.dumps(payload), headers=headers)

For more details and variations on submitting JSON data, check out:

• JSON POST examples

By understanding these methods, you'll be well-equipped to create varied and comprehensive load tests for your applications using LoadForge. Happy testing!