Supress class variable overtaken warning when original modules are the same

This issue was exposed by recent commits to better support including
refined modules.

1 files changed, 23 insertions, 0 deletions

diff --git a/test/ruby/test_variable.rb b/test/ruby/test_variable.rb
index 6ed956c468..b053e11607 100644
--- a/test/ruby/test_variable.rb
+++ b/test/ruby/test_variable.rb
@@ -63,6 +63,29 @@ class TestVariable < Test::Unit::TestCase
     assert_equal(1, o.singleton_class.class_variable_get(:@@foo))
   end
 
+  class IncludeRefinedModuleClassVariableNoWarning
+    module Mod
+      @@_test_include_refined_module_class_variable = true
+    end
+
+    module Mod2
+      refine Mod do
+      end
+    end
+
+    include Mod
+
+    def t
+      @@_test_include_refined_module_class_variable
+    end
+  end
+
+  def test_include_refined_module_class_variable
+    assert_warning('') do
+      IncludeRefinedModuleClassVariableNoWarning.new.t
+    end
+  end
+
   def test_variable
     assert_instance_of(Integer, $$)