require 'spec_helper'

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

      [
        [[], 'A', nil],
        [[], nil, nil],
        [['A'], 'A', 0],
        [['A'], 'B', nil],
        [['A'], nil, nil],
        [['A', 'B', nil], 'A', 0],
        [['A', 'B', nil], 'B', 1],
        [['A', 'B', nil], nil, 2],
        [['A', 'B', nil], 'C', nil],
        [[2], 2, 0],
        [[2], 2.0, 0],
        [[2.0], 2.0, 0],
        [[2.0], 2, 0],
      ].each do |values, item, expected|
        context "looking for #{item.inspect} in #{values.inspect}" do
          it "returns #{expected.inspect}" do
            L[*values].send(method) { |x| x == item }.should == expected
          end
        end
      end
    end
  end
end
