require 'spec_helper'

describe Immutable::Set do
  describe '#min' do
    context 'with a block' do
      [
        [[], nil],
        [['A'], 'A'],
        [%w[Ichi Ni San], 'Ni'],
      ].each do |values, expected|
        describe "on #{values.inspect}" do
          let(:set) { S[*values] }
          let(:result) { set.min { |minimum, item| minimum.length <=> item.length }}

          it "returns #{expected.inspect}" do
            result.should == expected
          end
        end
      end
    end

    context 'without a block' do
      [
        [[], nil],
        [['A'], 'A'],
        [%w[Ichi Ni San], 'Ichi'],
      ].each do |values, expected|
        describe "on #{values.inspect}" do
          it "returns #{expected.inspect}" do
            S[*values].min.should == expected
          end
        end
      end
    end
  end
end
