Create script to generate dummy data, for perf investigation

Gemfile

@@ -111,7 +111,6 @@ end
 group :test do
   gem 'capybara', '~> 3.22'
   gem 'climate_control', '~> 0.2'
-  gem 'faker', '~> 1.9'
   gem 'microformats', '~> 4.1'
   gem 'rails-controller-testing', '~> 1.0'
   gem 'rspec-sidekiq', '~> 3.0'
@@ -126,6 +125,7 @@ group :development do
   gem 'better_errors', '~> 2.5'
   gem 'binding_of_caller', '~> 0.7'
   gem 'bullet', '~> 6.0'
+  gem 'faker', '~> 2.15'
   gem 'listen'
   gem 'letter_opener', '~> 1.7'
   gem 'letter_opener_web', '~> 1.3'

Gemfile.lock

@@ -227,8 +227,8 @@ GEM
       tzinfo
     excon (0.78.1)
     fabrication (2.21.1)
-    faker (1.9.6)
-      i18n (>= 0.7)
+    faker (2.15.1)
+      i18n (>= 1.6, < 2)
     faraday (1.3.0)
       faraday-net_http (~> 1.0)
       multipart-post (>= 1.2, < 3)
@@ -296,7 +296,7 @@ GEM
     httplog (1.4.3)
       rack (>= 1.0)
       rainbow (>= 2.0.0)
-    i18n (1.8.7)
+    i18n (1.8.8)
       concurrent-ruby (~> 1.0)
     i18n-tasks (0.9.33)
       activesupport (>= 4.0.2)
@@ -703,7 +703,7 @@ DEPENDENCIES
   dotenv-rails (~> 2.7)
   elastic-apm (~> 3.13)
   fabrication (~> 2.20)
-  faker (~> 1.9)
+  faker (~> 2.15)
   fast_blank (~> 1.0)
   fastimage
   fog-core (<= 2.1.0)

lib/tasks/dummy_data.rake

@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+desc 'Import dummy data into the database, to create a more realistic development experience'
+task dummy_data: :environment do
+  raise 'Only run this in development' unless Rails.env.development?
+
+  domain = ENV['LOCAL_DOMAIN'] || Rails.configuration.x.local_domain
+
+  admin = Account.find_by!(username: 'admin')
+
+  accounts = 1.upto(1_000).map do |num|
+    username = "#{Faker::Internet.username(separators: %w[_])}#{num}"
+    password = Faker::Internet.password
+
+    Account.create!(username: username).tap do |account|
+      account.create_user!({
+        email: "#{username}@#{domain}",
+        password: password,
+        password_confirmation: password,
+        agreement: true,
+        approved: true
+      })
+    end
+  end
+
+  accounts.each do |acct|
+    FollowService.new.call(admin, acct)
+  end
+
+  statuses = (accounts + [admin]).map do |account|
+    PostStatusService.new.call(account, text: Faker::Lorem.paragraph(sentence_count: 20))
+  end
+
+  accounts.sample(200).zip(statuses.sample(200)).each do |account, status|
+    ReblogService.new.call(account, status)
+  end
+end