You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: numeric.rb
    path of file: ./repos/ferrocarril/mruby-sys/vendor/mruby-bc7c5d3/test/t
    
    the code of the file until where you have to start completion: ##
# Numeric ISO Test

def  assert_step(exp, receiver, args, inf: false)
  act = []
  ret = receiver.step(*args) do |i|
    act << i
    break if inf && exp.size == act.size
  end
  expr = "#{receiver.inspect}.step(#{args.map(&:inspect).joi
    
def  assert_step(exp, receiver, args, inf: false)
  act = []
  ret = receiver.step(*args) do |i|
    act << i
    break if inf && exp.size == act.size
  end
  expr = "#{receiver.inspect}.step(#{args.map(&:inspect).join(', ')})"
  assert do
    assert_true(exp.eql?(act), "#{expr}: counters", assertion_diff(exp, act))
    assert_same(receiver, ret, "#{expr}: return value") unless inf
  end
end