Bazel 1.0
One thing that I like about bazel is the way it integrates test and build actions to the same action graph and behind the same CLI. Tests are then also hermetic and sandboxed, and can be cached (or executed) remotely.<p>For example, you could configure your CI to push test results to a remote cache, and when developers check out a clean master, ”bazel test //...” against that cache will report all tests as pass without running anything.