require 'rspec'
require_relative '../lib/totally_lazy'

describe 'Pair' do

  it 'should return the first item: first/key' do
    expect(pair(1, 2).first).to eq(1)
    expect(pair(1, 2).key).to eq(1)
  end

  it 'should return the second item: second/value' do
    expect(pair(1, 2).second).to eq(2)
    expect(pair(1, 2).value).to eq(2)
  end

  it 'should return sequence of values' do
    expect(pair(1,2).values).to eq(sequence(1,2))
  end

  it 'should convert to string' do
   expect(pair('apples',2).to_s).to eq('{"apples"=>2}')
  end

  it 'should convert to a sequence of pairs from a map' do
    expect(Pair.from_map({apples:'10'}).to_a).to eq(sequence(pair(:apples,'10')).to_a)
  end

  it 'should convert a pair to a map' do
    expect(pair(1,2).to_map).to eq({1=>2})
  end

end