How directory structure for Web project (html + css + js + java/spring) should look with javascript Jasmine unit tests?

I am trying to incorporate into my project some Jasmine javascript unit tests. Where should I put it in the source tree? This is my current structure:

projectName/
  css/
  img/
  js/
  index.html (etc)

It should be in this public directory, or outside of it? I will be incorporating this frontend part into a Java Spring project. What should whole structure should look like?