We're considering migrating to Bazel from Make. To make the transition easier I would like to have bazel test (no flags / options) run the current directory's tests, if any.
So instead of bazel test my_tests bazel test would find the current directory's BUILD file, find any *_test rules and run those.
If you want to do exactly as you said then you can use your own script. When you run “bazel” it actually looks to see if there is a script named “bazel” under tools directory of the current workspace. So if you have an executable under “$workspace/tools/bazel” bazel will run that instead of the bazel binary itself. This means you can write a script that checks if the only argument is “test” and if so calls “bazel-real test :all” It can also check the exit code to see if there were no tests (it’s a specific error code) and return 0 instead