Play framework plugin test logging

Hi,

in my normal java projects I use

test.testLogging.exceptionFormat "full"

to get the actual error from JUnit to be printed on StdOut.

Using the play plugin, this does not seem to have any effect. I still just get

...MyTest > testFoo FAILED
There were failing tests. See the report at: ...

Is there some clean way to get the assertion error to print to stdout, other than running gradle -i ?