If you're new to testing, the idea of writing tests for code that you wrote might sound strange. You just wrote it, so, theoretically, you should know what it does, right? But with a growing codebase and lots of people touching the code, implementing your piece of software might come with some unexpected side effects! Jonas explains why testing is so important, how to get started, and what it was like to write Capybara, the very popular testing framework.
Jonas is a freelance developer from Gothenburg, Sweden, and the author of several well-known open source projects, including the acceptance testing framework Capybara.