Currently in Intellij if I try to create a new file via "New > whatever", I don't see any option to choose a JUnit file. I dug deeper and found out the "Edit File Templates...". While you can add a variety of files from there to the context menu, there is no ability to choose JUnit.
If you browse over to "Code" tab you can see various JUnit templates. However I have no idea if these are just code generation templates instead of file generation templates. And besides, there is no option to port them to the "Files" tab.
The closest SO thread describing this issue is this and it failed to match my needs.
Mind you I am relatively new to Intellij and I come from eclipse.
P.S: I am aware you can generate tests from existing classes. I am currently trying to implement TDD so that does not answer my needs.