[ruby/prism] Check using Prism nodes if a command call has any arguments in Ripper translator

* We don't know what `on_*` events might return so we cannot assume it's an Array.
* See https://github.com/ruby/prism/issues/3838#issuecomment-3774702396

https://github.com/ruby/prism/commit/bed4271ce2

1 files changed, 12 insertions, 0 deletions

diff --git a/test/prism/ruby/ripper_test.rb b/test/prism/ruby/ripper_test.rb
index 174c90cbca..8848c6a8c0 100644
--- a/test/prism/ruby/ripper_test.rb
+++ b/test/prism/ruby/ripper_test.rb
@@ -110,6 +110,14 @@ module Prism
       include Events
     end
 
+    class ObjectEvents < Translation::Ripper
+      Prism::Translation::Ripper::PARSER_EVENTS.each do |event|
+        define_method(:"on_#{event}") do |*args|
+          Object.new
+        end
+      end
+    end
+
     def test_events
       source = "1 rescue 2"
       ripper = RipperEvents.new(source)
@@ -152,6 +160,10 @@ module Prism
 
     def assert_ripper_sexp_raw(source)
       assert_equal Ripper.sexp_raw(source), Prism::Translation::Ripper.sexp_raw(source)
+
+      # Similar to test/ripper/assert_parse_files.rb in CRuby
+      object_events = ObjectEvents.new(source)
+      assert_nothing_raised { object_events.parse }
     end
 
     def assert_ripper_lex(source)