BaseHostJUnit4Test Base test class for running host JUnit4 style tests. 
DeviceParameterizedRunner JUnit4 style parameterized runner for host-side driven parameterized tests. 
DeviceTestRunOptions A builder class for options related to running device tests through BaseHostJUnit4Test. 
LongevityHostRunner A JUnit4-based Runner that composes tests run with DeviceJUnit4ClassRunner into a LongevitySuite, which runs tests repeatedly to induce stress and randomness.