Eclipse JUnit - possible causes of seeing “initializationError” in Eclipse window

Question

I know this question is pretty general but I haven\'t found any hints on why this error may show up. What are possible causes of seeing initalizationError in Eclips

Answer 1

If you're using the xtend language (or some other JVM lang with type inference) and haven't explicitly defined the return type then it may be set to a non-void type because of the last expression, which will make JUnit fail.