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require 'benchmark'
require 'rspec/expectations'

include RSpec::Expectations
include RSpec::Matchers

RSpec::Matchers.define :eq_using_dsl do |expected|
  match do |actual|
    actual == expected
  end
end

n = 1000

puts "3 runs of #{n} times for each example running #{RUBY_ENGINE}/#{RUBY_VERSION}"

puts "passing examples: 5.should eq(5)"
puts "* using the DSL"
Benchmark.benchmark do |bm|
  3.times do
    bm.report do
      n.times do
        5.should eq_using_dsl(5)
      end
    end
  end
end

puts
puts "* using a class"
Benchmark.benchmark do |bm|
  3.times do
    bm.report do
      n.times do
        5.should eq(5)
      end
    end
  end
end

puts
puts "failing examples: 5.should eq(3)"
puts "* using the DSL"
Benchmark.benchmark do |bm|
  3.times do
    bm.report do
      n.times do
        5.should eq_using_dsl(3) rescue nil
      end
    end
  end
end

puts
puts "* using a class"
Benchmark.benchmark do |bm|
  3.times do
    bm.report do
      n.times do
        5.should eq(3) rescue nil
      end
    end
  end
end

# 3 runs of 1000 times for each example running ruby/1.8.7
# passing examples: 5.should eq(5)
# * using the DSL
# 0.340000 0.000000 0.340000 ( 0.342052)
# 0.330000 0.010000 0.340000 ( 0.340618)
# 0.340000 0.000000 0.340000 ( 0.339149)
#
# * using a class
# 0.000000 0.000000 0.000000 ( 0.003762)
# 0.010000 0.000000 0.010000 ( 0.004192)
# 0.000000 0.000000 0.000000 ( 0.003791)
#
# failing examples: 5.should eq(3)
# * using the DSL
# 0.380000 0.000000 0.380000 ( 0.384415)
# 0.380000 0.010000 0.390000 ( 0.381604)
# 0.370000 0.000000 0.370000 ( 0.380255)
#
# * using a class
# 0.040000 0.000000 0.040000 ( 0.034528)
# 0.030000 0.000000 0.030000 ( 0.032021)
# 0.060000 0.010000 0.070000 ( 0.067579)
#
# 3 runs of 1000 times for each example running ruby/1.9.2
# passing examples: 5.should eq(5)
# * using the DSL
# 0.250000 0.010000 0.260000 ( 0.249692)
# 0.250000 0.000000 0.250000 ( 0.253856)
# 0.230000 0.000000 0.230000 ( 0.232787)
#
# * using a class
# 0.000000 0.000000 0.000000 ( 0.001069)
# 0.000000 0.000000 0.000000 ( 0.001041)
# 0.000000 0.000000 0.000000 ( 0.001023)
#
# failing examples: 5.should eq(3)
# * using the DSL
# 0.370000 0.000000 0.370000 ( 0.377139)
# 0.360000 0.010000 0.370000 ( 0.358379)
# 0.370000 0.000000 0.370000 ( 0.373795)
#
# * using a class
# 0.060000 0.010000 0.070000 ( 0.073325)
# 0.050000 0.000000 0.050000 ( 0.053562)
# 0.070000 0.000000 0.070000 ( 0.075382)
#
# 3 runs of 1000 times for each example running ruby/1.9.3
# passing examples: 5.should eq(5)
# * using the DSL
# 0.210000 0.000000 0.210000 ( 0.219539)
# 0.220000 0.010000 0.230000 ( 0.217905)
# 0.220000 0.000000 0.220000 ( 0.219657)
#
# * using a class
# 0.000000 0.000000 0.000000 ( 0.001054)
# 0.000000 0.000000 0.000000 ( 0.001048)
# 0.000000 0.000000 0.000000 ( 0.001035)
#
# failing examples: 5.should eq(3)
# * using the DSL
# 0.350000 0.000000 0.350000 ( 0.351742)
# 0.360000 0.000000 0.360000 ( 0.362456)
# 0.340000 0.010000 0.350000 ( 0.351098)
#
# * using a class
# 0.080000 0.000000 0.080000 ( 0.079964)
# 0.080000 0.000000 0.080000 ( 0.076579)
# 0.070000 0.000000 0.070000 ( 0.080587)
#
# 3 runs of 1000 times for each example running rbx/1.8.7
# passing examples: 5.should eq(5)
# * using the DSL
# 1.926107 0.009784 1.935891 ( 1.629354)
# 0.583860 0.004390 0.588250 ( 0.580396)
# 0.868571 0.003510 0.872081 ( 0.796644)
#
# * using a class
# 0.002652 0.000013 0.002665 ( 0.002679)
# 0.001845 0.000016 0.001861 ( 0.001848)
# 0.002656 0.000010 0.002666 ( 0.001823)
#
# failing examples: 5.should eq(3)
# * using the DSL
# 0.694148 0.002006 0.696154 ( 0.648551)
# 1.063773 0.004653 1.068426 ( 0.998837)
# 0.643594 0.001356 0.644950 ( 0.638358)
#
# * using a class
# 0.020139 0.000036 0.020175 ( 0.020161)
# 0.097540 0.000575 0.098115 ( 0.084680)
# 0.058366 0.000269 0.058635 ( 0.044372)
#
# 3 runs of 1000 times for each example running jruby/1.8.7
# passing examples: 5.should eq(5)
# * using the DSL
# 0.355000 0.000000 0.355000 ( 0.355000)
# 0.261000 0.000000 0.261000 ( 0.261000)
# 0.242000 0.000000 0.242000 ( 0.242000)
#
# * using a class
# 0.007000 0.000000 0.007000 ( 0.007000)
# 0.004000 0.000000 0.004000 ( 0.004000)
# 0.001000 0.000000 0.001000 ( 0.001000)
#
# failing examples: 5.should eq(3)
# * using the DSL
# 0.507000 0.000000 0.507000 ( 0.507000)
# 0.468000 0.000000 0.468000 ( 0.468000)
# 0.476000 0.000000 0.476000 ( 0.476000)
#
# * using a class
# 0.259000 0.000000 0.259000 ( 0.259000)
# 0.521000 0.000000 0.521000 ( 0.521000)
# 0.244000 0.000000 0.244000 ( 0.244000)
#
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