作者介紹 Andrea Leopardi is a software developer and engineer with a passion for programming and code design. He loves beautiful and thoroughly tested code. He's a member of the core team of the Elixir programming language. He's also a frequent public speaker and trainer.Jeffrey Matthias is a software engineer and industrial designer who loves modularity and quick feedback loops, two things that testing can help facilitate in code. When he's not coding, he's (helping his awesome wife with) raising his two kids and starting projects that he might finish someday.