require 'minitest/unit'
include MiniTest::Assertions

# This is joke :p

class MyClass
  class << self
    def new
      return Thread.current[:local] ||= super
    end
  end
end

def test
  puts "I'm thread #{Thread.current}"
  obj1 = MyClass.new
  obj2 = MyClass.new
  assert obj1 == obj2
end

t1 = Thread.new { test }
t2 = Thread.new { test }

t1.join
t2.join