To run these tests for iml_to_build, run

bazel test //tools/base/bazel:iml_to_build_tests

To update BUILD.bazel.test (the golden file) run

bazel run //tools/base/bazel:iml_to_build -- \
    --workspace $SRC/tools/base/bazel/test/iml_to_bazel \
    --project_path .