batchtester is a tool that runs a batch of test executables in sequence, performing setup of a Fuchsia target device before running the tests if necessary.
Its primary customer is out-of-tree projects using the Bazel SDK, but it is intended to be an eventual replacement for testrunner (//tools/testing/testrunner).
batchtester is intended to amortize the cost of device setup and run on Fuchsia-managed testing machines, neither of which is possible out-of-the-box with bazel test.
Design doc: http://goto.corp.google.com/oot-infra-testing