6 files changed, 40 insertions, 0 deletions
diff --git a/spec/ruby/core/main/fixtures/classes.rb b/spec/ruby/core/main/fixtures/classes.rb
index 0b74080492..757cee4e4a 100644
--- a/spec/ruby/core/main/fixtures/classes.rb
+++ b/spec/ruby/core/main/fixtures/classes.rb
@@ -4,12 +4,23 @@ module MainSpecs
 
   module WrapIncludeModule
   end
+
+  DATA = {}
 end
 
+
 def main_public_method
 end
 public :main_public_method
 
+def main_public_method2
+end
+public :main_public_method2
+
 def main_private_method
 end
 private :main_private_method
+
+def main_private_method2
+end
+private :main_private_method2
diff --git a/spec/ruby/core/main/fixtures/string_refinement.rb b/spec/ruby/core/main/fixtures/string_refinement.rb
new file mode 100644
index 0000000000..2dc6de52ca
--- /dev/null
+++ b/spec/ruby/core/main/fixtures/string_refinement.rb
@@ -0,0 +1,7 @@
+module StringRefinement
+  refine(String) do
+    def foo
+      'foo'
+    end
+  end
+end
diff --git a/spec/ruby/core/main/fixtures/string_refinement_user.rb b/spec/ruby/core/main/fixtures/string_refinement_user.rb
new file mode 100644
index 0000000000..48620c325f
--- /dev/null
+++ b/spec/ruby/core/main/fixtures/string_refinement_user.rb
@@ -0,0 +1,11 @@
+using StringRefinement
+
+module MainSpecs
+  DATA[:in_module] = 'hello'.foo
+
+  def self.call_foo(x)
+    x.foo
+  end
+end
+
+MainSpecs::DATA[:toplevel] = 'hello'.foo
diff --git a/spec/ruby/core/main/fixtures/using.rb b/spec/ruby/core/main/fixtures/using.rb
new file mode 100644
index 0000000000..30713ef309
--- /dev/null
+++ b/spec/ruby/core/main/fixtures/using.rb
@@ -0,0 +1 @@
+using Module.new
diff --git a/spec/ruby/core/main/fixtures/using_in_main.rb b/spec/ruby/core/main/fixtures/using_in_main.rb
new file mode 100644
index 0000000000..a4a71c89cc
--- /dev/null
+++ b/spec/ruby/core/main/fixtures/using_in_main.rb
@@ -0,0 +1,5 @@
+MAIN = self
+
+module X
+  MAIN.send(:using, Module.new)
+end
diff --git a/spec/ruby/core/main/fixtures/using_in_method.rb b/spec/ruby/core/main/fixtures/using_in_method.rb
new file mode 100644
index 0000000000..d9ea2e9ef0
--- /dev/null
+++ b/spec/ruby/core/main/fixtures/using_in_method.rb
@@ -0,0 +1,5 @@
+def foo
+  using Module.new
+end
+
+foo