class Rspec::Core::ExampleGroup

def self.run_examples(example_world, reporter)

Runs all examples, returning true only if all of them pass 
def self.run_examples(example_world, reporter)
  examples_to_run.map do |ex| 
    result = ex.run(example_world, reporter) 
    example_world.__reset__
    before_all_ivars.each { |k, v| example_world.instance_variable_set(k, v) } 
    result
  end.all?
end