require 'benchmark/ips'
require 'immutable/set'

Benchmark.ips do |b|
  small_set = Immutable::Set.new((1..10).to_a)
  large_set = Immutable::Set.new((1..1000).to_a)

  b.report 'small.union(large)' do
    small_set.union(large_set)
  end

  b.report 'large.union(small)' do
    large_set.union(small_set)
  end
end