Explicit subject block should evaluate at instance level

[spohlenz]

It is not currently possible to use a helper method in both the subject block and an it/specify block. e.g.

describe "Foo" do
  def my_helper
    MyClass
  end

  subject { my_helper.new }
  specify { my_helper.should do_something }
end

This code gives undefined method `my_helper' for #Rspec::Core::ExampleGroup... as the subject block is being evaluated in the context of the ExampleGroup class.

If an explicit subject is specified, it should be evaluated in the context of the ExampleGroup instance (this was the case for rspec-1).

[spohlenz]

Fix here: http://github.com/spohlenz/rspec-core/commit/2ab053d148dd7865acac059fc0eff1829e31dd63

[dchelimsky]

Merged: http://github.com/rspec/rspec-core/commit/3b1a992bcd8de3fd51b793a30fa3537a2366f91d