Linked list

linked_list.rb

class Node

  attr_accessor :next, :data

  def push(str)
    n = Node.new
    n.data = str
    node = self
    next_node = nil
    while node.next
      next_node = node 
    end
    next_node.next = n
  end

end


require 'minitest/autorun'

describe Node do
  before do
    @node = Node.new
  end

  describe "pushing nodes onto list" do
    it "should add multiple nodes to the end of the list" do
      @node.push("a")
      @node.push("b")
      @node.next.data.should == "a"
      @node.next.next.should_not be_nil
      @node.next.next.data.should == "b"
    end
  end
end