debug

spec/rspec/support/spec/stderr_splitter_spec.rb

@@ -101,24 +101,29 @@
 
   # This spec replicates what matchers do when capturing stderr, e.g `to_stderr_from_any_process`
   it 'is able to restore the stream from a cloned StdErrSplitter' do
+    puts STDERR.fileno
+    puts STDERR.respond_to?(:path) && STDERR.path
     if RSpec::Support::Ruby.jruby? && !RSpec::Support::Ruby.jruby_9000?
-      skip "JRuby < 9.0.0.0 doesn't have a predictable identifier for stdout"
+      #skip "JRuby < 9.0.0.0 doesn't have a predictable identifier for stdout"
     end
 
     cloned = splitter.clone
     expect(splitter.to_io).to be_stderr
+    puts splitter.to_io.fileno
 
     tempfile = Tempfile.new("foo")
     begin
       splitter.reopen(tempfile)
       expect(splitter.to_io).to_not be_stderr
+      puts splitter.to_io.fileno
     ensure
       splitter.reopen(cloned)
       tempfile.close
       tempfile.unlink
     end
     # This is the important part of the test that would fail without proper cloning hygeine
     expect(splitter.to_io).to be_stderr
+    puts splitter.to_io.fileno
   end
 
   # Detecting STDERR in a way that doesn't use a reference