test_mutate.rb

require_relative "./linkedlistnode1and2.rb"

RSpec.describe 'mutate_list' do
  it "should return the expected values" do
    node1 = LinkedListNode.new(1)
    node2 = LinkedListNode.new(2,node1)
    mutate = mutate_list(node2)
    expect(mutate.value).to eq 1
    expect(mutate.next_node.value).to eq 2
    expect(mutate.next_node.next_node).to eq nil
  end
end