Merge pull request #13 from pocke/Add_benchmark_script

Add benchmark script

Gemfile

@@ -14,3 +14,5 @@ gem "rubocop", "~> 1.21", require: false
 gem 'steep', require: false
 
 gem 'sqlite3'
+
+gem 'benchmark-ips'

Rakefile

@@ -14,3 +14,28 @@ task :steep do
 end
 
 task default: %i[rubocop steep spec]
+
+namespace :benchmark do
+  task :to_sql do
+    puts "# Benchmarking #to_sql mehtod"
+    puts
+    puts "## Wihtout AR::Originator"
+    sh 'ruby', 'benchmark/to_sql.rb'
+
+    puts
+    puts "## With AR::Originator"
+    sh 'ruby', '-r', 'activerecord/originator', 'benchmark/to_sql.rb'
+  end
+
+  task :select_query do
+    puts "# Benchmarking SELECT Query"
+    puts
+    puts "## Wihtout AR::Originator"
+    sh 'ruby', 'benchmark/select_query.rb'
+
+    puts
+    puts "## With AR::Originator"
+    sh 'ruby', '-r', 'activerecord/originator', 'benchmark/select_query.rb'
+  end
+end
+task benchmark: %i[benchmark:to_sql benchmark:select_query]

activerecord-originator.gemspec

@@ -25,7 +25,7 @@ Gem::Specification.new do |spec|
   spec.files = Dir.chdir(__dir__) do
     `git ls-files -z`.split("\x0").reject do |f|
       (File.expand_path(f) == __FILE__) ||
-        f.start_with?(*%w[bin/ test/ spec/ features/ .git .github appveyor Gemfile])
+        f.start_with?(*%w[bin/ test/ spec/ features/ .git .github appveyor Gemfile benchmark/])
     end
   end
   spec.bindir = "exe"

benchmark/select_query.rb

@@ -0,0 +1,26 @@
+require 'active_record'
+require 'benchmark/ips'
+
+ActiveRecord::Base.establish_connection(adapter: "sqlite3", database: ":memory:")
+ActiveRecord::Base.logger = Logger.new(File::NULL)
+ActiveRecord::Schema.define do
+  create_table :posts, force: true do |t|
+    t.string :title, null: false
+    t.string :state, null: false
+    t.integer :comments_count, default: 0
+    t.integer :likes_count, default: 0
+  end
+end
+
+class Post < ActiveRecord::Base
+end
+
+100.times do |i|
+  Post.create!(title: "title#{i}", state: i.odd? ? 'draft' : 'published', comments_count: i, likes_count: i)
+end
+
+Benchmark.ips do |x|
+  x.report("without where") { Post.all.to_sql }
+  x.report('with single condition') { Post.where(title: 'title1').to_sql }
+  x.report('with multiple condition') { Post.where(state: 'draft', comments_count: ..42, likes_count: ..43).to_sql }
+end

benchmark/to_sql.rb

@@ -0,0 +1,22 @@
+require 'active_record'
+require 'benchmark/ips'
+
+ActiveRecord::Base.establish_connection(adapter: "sqlite3", database: ":memory:")
+ActiveRecord::Base.logger = Logger.new(File::NULL)
+ActiveRecord::Schema.define do
+  create_table :posts, force: true do |t|
+    t.string :title, null: false
+    t.string :state, null: false
+    t.integer :comments_count, default: 0
+    t.integer :likes_count, default: 0
+  end
+end
+
+class Post < ActiveRecord::Base
+end
+
+Benchmark.ips do |x|
+  x.report("without where") { Post.all.to_sql }
+  x.report('with single condition') { Post.where(title: 'hello').to_sql }
+  x.report('with multiple condition') { Post.where(title: 'hello', state: 'draft', comments_count: 42, likes_count: 43).to_sql }
+end