Xavi Rigau presented on UI testing with Espresso. Espresso is an Android UI testing framework that allows writing easy to set up, fluid, and fast UI tests. It has a high-level API based on matchers that makes tests readable. Espresso tests are extensible through custom matchers and do not require calls to sleep due to its smart waiting functionality. The presentation demonstrated the Espresso API and encouraged attending to try out writing sample tests on their own.