%% date:: [[2022-10-21]] %% # [[Assertions]] An assertion is a [[Test criteria|test criterion]] that builds upon [[Checks]]. Unlike checks, assertions are immediate and stop a test if they are not met. <iframe width="560" height="315" src="https://www.youtube.com/embed/k98Ej3xvTQM" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>