File: dup_spec.rb

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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)

describe "Struct-based class#dup" do

  # From https://github.com/jruby/jruby/issues/3686
  it "retains an included module in the ancestor chain for the struct's singleton class" do
    klass = Struct.new(:foo)
    mod = Module.new do
      def hello
        "hello"
      end
    end

    klass.extend(mod)
    klass_dup = klass.dup
    klass_dup.hello.should == "hello"
  end

end