require 'spec_helper'

describe Immutable::List do
  [:to_a, :entries].each do |method|
    describe "##{method}" do
      context 'on a really big list' do
        it "doesn't run out of stack" do
          -> { BigList.to_a }.should_not raise_error
        end
      end

      [
        [],
        ['A'],
        %w[A B C],
      ].each do |values|
        context "on #{values.inspect}" do
          let(:list) { L[*values] }

          it "returns #{values.inspect}" do
            list.send(method).should == values
          end

          it 'leaves the original unchanged' do
            list.send(method)
            list.should eql(L[*values])
          end

          it 'returns a mutable array' do
            result = list.send(method)
            expect(result.last).to_not eq('The End')
            result << 'The End'
            result.last.should == 'The End'
          end
        end
      end
    end
  end
end