You can organize the execution of your instrumented unit tests defining a Suite.
/**
* Runs all unit tests.
*/
@RunWith(Suite.class)
@Suite.SuiteClasses({MyTest1.class ,
MyTest2.class,
MyTest3.class})
public class AndroidTestSuite {}
Then in AndroidStudio you can run with gradle or setting a new configuration like:
Test suites can be nested.