How to test chrome extensions?

Is there a good way to do this? I'm writing an extension that interacts with a website as a content script and saves data using localstorage. Are there any tools, frameworks, etc. that I can use to test this behavior? I realize there are some generic tools for testing javascript, but are those sufficiently power to test an extension? Unit testing is most important, but I'm also interested in other

[IzumiSy]

chrome拡張機能のユニットテストを書けるsinon-chromeというのがあるらしい