message: Avoid failing in kokoro/testutils/run_bazel_tests.sh when there are no test targets.
diff: @@ -60,7 +60,12 @@ run_bazel_tests() {
  (
  cd "${workspace_dir}"
  time bazel build -- ... || fail_with_debug_output
  - time bazel test "${TEST_FLAGS[@]}" -- ... || fail_with_debug_output
  + time bazel test "${TEST_FLAGS[@]}" -- ...
  + # Exit code 4 means targets build correctly but no tests were found. See
  + # https://bazel.build/docs/scripts#exit-codes.
  + if (( $? != 0 && $? != 4 )); then
  + fail_with_debug_output
  + fi
  # Run specific manual targets.
  if (( ${#manual_targets[@]} > 0 )); then
  time bazel test "${TEST_FLAGS[@]}" -- "${manual_targets[@]}" \
  