The GWT trait seems to be missing:
I checked the external dependencies and it doesn't seem to be there:
I'm using the following version of specs2
:
"org.specs2" %% "specs2-core" % "3.6.1" % "test"
Is it in a different location? I'm not sure how to get it in order to use full support for GWT tests.
You need to add specs2-gwt
to your build. See here for a list of all the additional specs2 jars.