Allocate : Create an object but avoid initialization.

a.rb

#allocate() 
#Allocates space for a new object of class’s class and does not call initialize on the new instance. The returned object #must be an instance of class.

klass = Class.new do
  def initialize(*args)
    @initialized = true
  end

  def initialized?
    @initialized || false
  end
end

klass.allocate.initialized? #=> false

#useful for testing e.g. in Jekyll

def test_process
    p = Post.allocate
    p.process("2008-10-19-foo-bar.textile")
    
    assert_equal Time.parse("2008-10-19"), p.date
    assert_equal "foo-bar", p.slug
    assert_equal ".textile", p.ext
  end