I have been frequently running all the tests in a package/directory by right clicking the directory or module and selecting 'Run all tests'. At some point though this has stopped working - intellij simply reports '0 test class found in package...'.
Its something thats happened to this one project. If I create a new maven module in the same project, I'll have the same problem - but if I create a new project and add a new maven module, it works.
If I run 'mvn install' my tests run fine.
Anyone have any suggestions how I debug and fix this?