Quick n' dirty benchmarking + asserting in ruby scripts

quick-bench.rb

require "benchmark"
require "test/unit/assertions"

extend Test::Unit::Assertions

text = <<END

here's some
text for
you
  yeah
💩

END

def method_1(text)
  text.strip.split("\n").first.strip
end

def method_2(text)
  text.strip.split("\n", 2).first.strip
end

def method_3(text)
  first, second = text.strip.split("\n", 2).map(&:strip)
  first
end

def method_4(text)
 text[/^\n*(.*)\n/, 1]
end

assert_equal "here's some", method_1(text)
assert_equal "here's some", method_2(text)
assert_equal "here's some", method_3(text)
assert_equal "here's some", method_4(text)

n = 1_000_000
Benchmark.bm do |group|
  group.report { n.times { method_1(text) } }
  group.report { n.times { method_2(text) } }
  group.report { n.times { method_3(text) } }
  group.report { n.times { method_4(text) } }
end