module RSpec::Core::Pending

def pending(message=nil, &_block)
  current_example = RSpec.current_example
  if block_given?
    raise ArgumentError, <<-EOS.gsub(/^\s+\|/, '')
      |The semantics of `RSpec::Core::Pending#pending` have changed in
      |RSpec 3. In RSpec 2.x, it caused the example to be skipped. In
      |RSpec 3, the rest of the example is still run but is expected to
      |fail, and will be marked as a failure (rather than as pending) if
      |the example passes.
      |
      |Passing a block within an example is now deprecated. Marking the
      |example as pending provides the same behavior in RSpec 3 which was
      |provided only by the block in RSpec 2.x.
      |
      |Move the code in the block provided to `pending` into the rest of
      |the example body.
      |
      |Called from #{CallerFilter.first_non_rspec_line}.
      |
    EOS
  elsif current_example
    Pending.mark_pending! current_example, message
  else
    raise "`pending` may not be used outside of examples, such as in " \
          "before(:context). Maybe you want `skip`?"
  end
end