== BasicObject

  require 'facets/basicobject'

  o = Class.new(BasicObject).new

Should ignore new kernel methods.

  Kernel.module_eval { def xxx ; end }

  expect NoMethodError do
    o.xxx
  end

Should ignore new object methods.

  Object.class_eval { def yyy ; end }

  expect NoMethodError do
    o.yyy
  end