Fix faker-ruby#2851

Add benchmark rake task for evaluating time execution. Fixes

Co-authored-by: Rubens Fernandes <rubens.fernandes97@gmail.com>

tasks/benchmark.rake

@@ -0,0 +1,41 @@
+# frozen_string_literal: true
+
+# rubocop:disable Security/Eval,Style/EvalWithLocation
+
+require 'benchmark'
+require 'faker'
+
+desc 'Benchmarking every Faker generator'
+task :benchmark do
+  count = BenchmarkHelper.all_methods.count
+  Benchmark.bmbm do |x|
+    x.report("Number of generators: #{count}") do
+      100.times do
+        BenchmarkHelper.all_methods.each { |method_name| eval(method_name) }
+      end
+    end
+  end
+end
+
+class BenchmarkHelper
+  class << self
+    def all_methods
+      subclasses.map do |subclass|
+        subclass_methods(subclass).flatten
+      end.flatten.sort
+    end
+
+    def subclasses
+      Faker.constants.delete_if do |subclass|
+        %i[Base Bank Books Cat Char Base58 ChileRut CLI Config Creature Date Dog DragonBall Dota ElderScrolls Fallout Games GamesHalfLife HeroesOfTheStorm Internet JapaneseMedia LeagueOfLegends Movies Myst Overwatch OnePiece Pokemon Religion Sports SwordArtOnline TvShows Time VERSION Witcher WorldOfWarcraft Zelda].include?(subclass)
+      end.sort
+    end
+
+    def subclass_methods(subclass)
+      eval("Faker::#{subclass}.public_methods(false) - Faker::Base.public_methods(false)").sort.map do |method|
+        "Faker::#{subclass}.#{method}"
+      end.sort
+    end
+  end
+end
+# rubocop:enable Security/Eval,Style/EvalWithLocation