Log directories being ignored for having no Ruby file

lib/zeitwerk/loader/helpers.rb

@@ -30,7 +30,12 @@ module Zeitwerk::Loader::Helpers
 
  if dir?(abspath)
  next if roots.key?(abspath)
- next if !has_at_least_one_ruby_file?(abspath)
+
+ if !has_at_least_one_ruby_file?(abspath)
+ log("directory #{abspath} is ignored because it has no Ruby files") if logger
+ next
+ end
+
  ftype = :directory
  else
  next unless ruby?(abspath)

test/lib/zeitwerk/test_logging.rb

@@ -204,6 +204,16 @@ def logger.debug(message)
  end
  end
 
+ test "logs directories being ignored because they have no Ruby files" do
+ files = [["tasks/foo.rake", ""]]
+ with_files(files) do
+ assert_logged(%r{directory .*?/tasks is ignored because it has no Ruby files}) do
+ loader.push_dir(".")
+ loader.setup
+ end
+ end
+ end
+
  test "logs when eager loading starts" do
  with_setup do
  assert_logged(/eager load start/) do