The many multimedia features of Scratch make it a complex programming language that needs a lot of testing when being reimplemented. Implementations like Phosphorus, Sulfurous or Scratch 3.0 need to be tested if the features of Scratch behave the same in the new implementation. This project contains a number of automated tests that assess many key features of Scratch including sound, sprite and pen functions. To run the tests simply start the project. After a some time it reports the results of all tests with a short error note in case of a failed test. This project uses @Griffpatch's smooth Scratchcat animation. #games #techdemo