There have been lots of talks about proper ways of testing our Angular applications but no one in the Angular community is talking much about the jest.js snapshots and how we can effectively and quickly test our applications. Snapshot testing allows us to quickly validate our UI when given a deterministic state. Snapshot testing also allows us to validate our reducers post state quickly and easily. This 20-minute talk is a great overview on how to quickly integrate jest.js into our angular-cli app, what files to check in, and how to write tests that effectively validate state and ui rendering.