Android gradle test framework: single class

Is it possible to run a single test class using the new Android gradle build framework?

I have a test package that has multiple test classes (All of them are InstrumentationTestCase classes). I've been able to setup my build.gradle file to run the test package

defaultConfig{
    testPackageName "com.company.product.tests"
    testInstrumentationRunner "android.test.InstrumentationTestRunner"
}

But is there a way to test only one test case in that package? Otherwise I'll be using the age old adb shell am instrument -w .......

P.S. I don't have time right now to switch to Roboelectric, but I do see that its pretty much the defacto framework nowadays.