In Vaadin 25.1, browserless UI tests become free. Validate UI logic directly in the JVM and ship faster with stable, scalable testing.

Vaadin is a platform for building web applications with Java. Readers can learn about Java web development, UI components, and web application architecture. With tutorials, documentation, and community support, Vaadin offers resources for developers interested in creating modern and scalable web applications.

Vaadin

Vaadin 25.1 makes browserless UI tests (formerly UI unit tests) free under Apache 2.0. These tests run UI code directly in the JVM without a browser or WebDriver, enabling fast, stable validation of component state, event handling, routing, and application logic. The feature evolved from the community Karibu Testing library and the commercial TestBench UI unit testing module. A new module and Java package will be introduced, with a compatibility layer for existing TestBench UI unit tests. Vaadin TestBench's E2E tooling remains commercial, and the team is exploring turning E2E flows into Grafana k6 scalability scenarios.

Browserless UI Tests Join Vaadin’s Free Offering in 25.1