Clarify that TruffleRuby/JRuby do not use a dispatcher thread

1 files changed, 2 insertions, 4 deletions

diff --git a/spec/ffi/function_spec.rb b/spec/ffi/function_spec.rb
index 9939942..a7d6dc7 100644
--- a/spec/ffi/function_spec.rb
+++ b/spec/ffi/function_spec.rb
@@ -23,12 +23,10 @@ describe FFI::Function do
 
   context 'when called with a block' do
     it 'creates a thread for dispatching callbacks and sets its name' do
-      skip "not yet supported on TruffleRuby" if RUBY_ENGINE == "truffleruby"
-      skip "not yet supported on JRuby" if RUBY_ENGINE == 'jruby'
-
+      skip 'this is MRI-specific' if RUBY_ENGINE == 'truffleruby' || RUBY_ENGINE == 'jruby'
       FFI::Function.new(:int, []) { 5 } # Trigger initialization
 
-      expect(Thread.list.map(&:name)).to include("FFI::Function Callback Dispatcher")
+      expect(Thread.list.map(&:name)).to include('FFI::Function Callback Dispatcher')
     end
   end