Most Java and .NET ones, not everything breaks, statically compiled, so not as many unit tests required as in dynamic languages.

While it is deprecated, you can do a File=>New Project for Web Forms in 2026.

Why do many people mention the need of tests for types in dynamically typed languages?

In Rails my tests are mostly to ensure that a request to a controller returns the expected response and the expected changes in the database. Unit tests are often on validations and the errors they return for invalid data. Then there are functional tests that drive a headless browser.