Ensure that List Test Reading has been drained before finishing execution.
Ensure that List Test Reading has been drained before finishing execution.

Summary: As with Logic Tests, we should do the same with Listing of test output.

Reviewed By: marekcirkos

Differential Revision: D6398252

fbshipit-source-id: 47c11982837d11f580b550058f2c710ce8e541e0

facebook/FBSimulatorControl,facebook/FBSimulatorControl,facebook/FBSimulatorControl,facebook/FBSimulatorControl,facebook/FBSimulatorControl