ui-unit-testing

Write browser-free UI unit tests for Vaadin 25 views with UIUnitTest.

6|1|Updated Feb 24, 2026

Search Tags:#navigation #junit5 #vaadin #binder #ui-unit-testing #component-testers

Ready to run

npx skills add https://github.com/marcushellberg/vaadin-development-plugin --skill ui-unit-testing-marcushellberg

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: ui-unit-testing
Source: https://github.com/marcushellberg/vaadin-development-plugin/tree/main/skills/ui-unit-testing
Command: npx skills add https://github.com/marcushellberg/vaadin-development-plugin --skill ui-unit-testing-marcushellberg

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Writes fast, browser-free unit tests for Vaadin 25 views by testing server-side logic and component interactions without a browser, reducing flakiness and CI time.

Core Features & Use Cases

Test view navigation, field binding, and component state using UIUnitTest and TestBench-style testers.
Validate server-side routing and UI behavior without starting a browser or servlet container.
Integrate with Vaadin 25, Spring Boot 4, and JUnit 5/6 in CI to catch regressions early.

Quick Start

Write a UIUnitTest that navigates to your view, uses test() to interact with components, and asserts the expected outcome (e.g., a notification or navigation).

Frequently Asked Questions about ui-unit-testing

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I write browser-free UI unit tests for Vaadin 25 views?▼

You can test server-side routing and UI behavior without a browser by using UIUnitTest with JUnit 5/6, validating view navigation and component state directly in your CI pipeline to reduce flakiness and execution time.

What is the best way to test Vaadin binder data binding without a browser?▼

Testing Vaadin binder data binding without a browser is achieved through UIUnitTest, which allows you to validate field binding and component interactions server-side, ensuring UI behavior is correct without the overhead of browser execution.

Does UIUnitTest work with Spring Boot 4 and JUnit 5?▼

Yes, UIUnitTest integrates with Vaadin 25, Spring Boot 4, and JUnit 5/6, allowing you to run fast, browser-free UI tests in CI to catch regressions early. This setup validates server-side routing and UI behavior without a servlet container.

Why should I use browser-free UI tests instead of TestBench for Vaadin views?▼

Browser-free UI tests eliminate the flakiness and long execution times associated with browser-based testing. By testing server-side logic and component interactions directly, you validate routing and UI behavior faster in CI without launching a browser.

Can I validate server-side routing and UI behavior without starting a servlet container?▼

Yes, you can validate server-side routing and UI behavior without starting a servlet container by using UIUnitTest to interact with components and assert navigation events directly in your Vaadin 25 application tests.