add nil#to_h; ref #2348

2 files changed, 6 insertions, 0 deletions

diff --git a/mrbgems/mruby-enum-ext/mrblib/enum.rb b/mrbgems/mruby-enum-ext/mrblib/enum.rb
index 5856fb363..b13d00a84 100644
--- a/mrbgems/mruby-enum-ext/mrblib/enum.rb
+++ b/mrbgems/mruby-enum-ext/mrblib/enum.rb
@@ -691,4 +691,8 @@ module Enumerable
     end
     h
   end
+
+  def nil.to_h
+    {}
+  end
 end
diff --git a/mrbgems/mruby-enum-ext/test/enum.rb b/mrbgems/mruby-enum-ext/test/enum.rb
index 6b2624a45..08b553fe5 100644
--- a/mrbgems/mruby-enum-ext/test/enum.rb
+++ b/mrbgems/mruby-enum-ext/test/enum.rb
@@ -157,4 +157,6 @@ assert("Enumerable#to_h") do
   h = c.new.to_h
   assert_equal Hash, h.class
   assert_equal h0, h
+  # mruby-enum-ext also provides nil.to_h
+  assert_equal Hash.new, nil.to_h
 end