Load Testing with Cypress using Step UI
In this tutorial, you'll learn how to reuse existing Cypress tests to quickly set up and run a browser-based load test using the Step UI.
Get Step SaaS for free to follow this tutorial
Prerequisites
- Access to a Step cluster: Get started quickly by setting up a free SaaS cluster in the Step Portal, or, if preferred, follow the Installation page to configure your own on-premise cluster.
- Maven (optional): to optionally build and execute the load test locally
Test scenario
For the sake of this tutorial, we’ll simulate 10 parallel users visiting our demo online store. The typical visit that we’ll simulate consists of the following actions: navigate to the online store, search for a product, add it to the shopping cart, and complete the order.
For this simulation we have an existing Cypress test: Cypress sample project
The tutorial involves the following steps:
The main advantage of Step is the ability to reuse automation artifacts, so if you have already followed our Synthetic Monitoring with Cypress or RPA with Cypress tutorials, you can go straight to using the wizard.
Set up the Cypress project
Clone the Cypress sample project from GitHub:
git clone https://github.com/exense/step-samples
Optionally, run the Cypress test locally:
cd step-samples/keywords/cypress/opencart
npm install
npx cypress run --headed
Zip the Cypress project that will be uploaded to Step:
cd ..
zip -r opencart.zip opencart/
Use the Step wizard
Log in to the Step portal, or sign up for free and create a Step Cluster with ten agents, following this Quick setup guide.
To launch the Step wizard, from the Step platform:
- Go to home.
- Click on Start wizard.
Step 1: Set up Cypress project
On the Cypress Load Test dialog, fill in the information for these sections step-by-step: Cypress project, Load Test Configuration, Result.
- Enter the ZIP file name of your Cypress project: opencart.zip
- Enter the Spec file name: opencart.cy.js
- Click on Next
Step 2: Load test configuration
- Enter the Number of parallel users: 10
- Enter the Load test duration: 1 hour. Test will terminate after the specified time.
- Click Next
Step 3: Run and view the result
Execute your load test plan by clicking the Execute button.
Once the execution has started, you will be redirected to the execution page.
Analyze the result
In the Performance tab, you can explore detailed performance metrics:
There you’ll find all metrics relative to the transactions of your Cypress scripts:
- The execution time of our custom command “Opencart_PlaceOrder”
- The series related to the different Cypress commands called within our custom command (e.g. “visit”, “contains”)
- The total execution time of our Keyword: “Place an order in Opencart”
Review the transaction statistics
At the bottom of the Performance view, you’ll find an aggregation of performance metrics for the selected time frame:
Incase you are just getting sarted with Step, this tutorial is one of our basic use cases of using Cypress script in Step. Step lets you reuse automation artifacts across the whole DevOps cycle, and load testing is just one aspect of it. For more use case of performance tests, synthetic monitoring, and robotics can be found on our tutorials page and resource library.
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