Property-based testing is a method of testing software by specifying properties that the code should adhere to, then testing it by generating random data to try and break those properties. In this book, Fred Hebert shows you how to use PropEr, a property-based testing tool for Erlang, and how the same concepts apply to Elixir. He takes you through the key concepts, tools, and techniques to use property-based testing in your day-to-day software development