This session will discuss and showcase the different Blazor testing strategies, libraries, and tools available to us, so whether you are building a website, web app, or a reusable Blazor component library, you can pick the ones that yield the most bang for the buck. Specifically, this session covers end-2-end testing, component testing, unit testing, Playwright, bUnit, snapshot testing, semantic markup comparison, emulating user interactions, and how and when to use test doubles (e.g., mocks). We will cover these topics with the goal of creating tests that protect against regressions, are resistant to refactoring, are maintainable, and give fast feedback.