I'm planning on writing up a blog post when I have some time.
Could you please provide more information(e.g. any project where we can reproduce it)? Then we can try to help You.
I was meaning to say that I was trying to run kotlinjs unit tests the same way you do kotlinjvm unit tests. That is, by right clicking the test and clicking 'debug helloTest()'. This creates a junit launch configuration and that doesn't work with kotlinjs, only kotlinjvm. If I create an html page and run qunit with a jsdebug configuration, that works fine.
The ideal workflow would be how it is for Java, in Java I can be in one of my classes, press Ctrl+shift+T which prompts me to create a new test, or navigates me to an existing one, then I can right click anywhere in that test, either the method or the class itself, and that automatically creates a junit configuration. Then the test is run right in the idea console. Part of this works for KotlinJVM (ctrl+shift+T doesn’t work) and none of it works for KotlinJS.
In IDEA 14 You can setup make with "Before launch" option(reladet issue IDEA-130914).
The Kotlin plugin (0.9.223) doesn't work with 14.