Benchmark test for passing a method to another vs just using an array and each

ruby_benchmark_test.rb

require 'benchmark'
 
repetitions = 1000000
 
def assert_method(string)
  string.kind_of?(String)
end
 
 
def assert_form_with_fields(assertion)
  send(assertion, "blue")
  send(assertion, "green")
  send(assertion, "orange")
  send(assertion, "red")
end
 
 
Benchmark.bm(20) do |x|
  x.report "Passing method to method" do
    repetitions.times do
      assert_form_with_fields("assert_method")
    end
  end
 
  x.report "using each" do
    repetitions.times do
      colors = ["blue","green","orange","red"]
      colors.each {|color| assert_method color }
    end
  end
end