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

describe "UnboundMethod#owner" do
  ruby_version_is '1.8.7' do
    it "returns the owner of the method" do
      "abc".method(:upcase).owner.should == String
    end

    it "returns the name even when aliased" do
      obj = UnboundMethodSpecs::Methods.new
      obj.method(:foo).owner.should == UnboundMethodSpecs::Methods
      obj.method(:bar).owner.should == UnboundMethodSpecs::Methods
    end

    it "returns the class/module it was defined in" do
      UnboundMethodSpecs::C.new.method(:baz).owner.should == UnboundMethodSpecs::A
      UnboundMethodSpecs::Methods.new.method(:from_mod).owner.should == UnboundMethodSpecs::Mod
    end

    ruby_version_is "" ... "1.9" do

      before :each do
        @parent_singleton_class = class << UnboundMethodSpecs::Parent; self; end
        @child_singleton_class  = class << UnboundMethodSpecs::Child3; self; end
      end

      it "returns the original owner for aliased methods" do
        @child_singleton_class.instance_method(:class_method).owner.should == @parent_singleton_class
        @child_singleton_class.instance_method(:another_class_method).owner.should == @parent_singleton_class
      end

    end

    ruby_version_is "1.9" do

      before :each do
        @parent_singleton_class = class << UnboundMethodSpecs::Parent; self; end
        @child_singleton_class  = class << UnboundMethodSpecs::Child3; self; end
      end

      it "returns the new owner for aliased methods" do
        @child_singleton_class.instance_method(:class_method).owner.should == @parent_singleton_class
        @child_singleton_class.instance_method(:another_class_method).owner.should == @child_singleton_class
      end

    end

  end
end