I have a Javascript project that I work on in cloud9 IDE online, and I wanted to test my code using testem npm module: npmjs.org/package/te
If you are running a node process: http://workspacename.username.c9users.io will be the link to get to it.
If you want to preview a particular file in the workspace: https://c9users.io/username/workspacename/workspace/filename.html
My name is bob, and my project name is mycoolproject.
Running node service link - http://mycoolproject.bob.c9users.io
Direct file preview link - https://c9users.io/bob/mycoolproject/workspace/index.html