Enable the `bullet_logger` setting; enable `raise` in test environment

Gemfile

@@ -260,7 +260,6 @@ group :development do
   gem 'brakeman', '~> 3.6.0', require: false
 
   gem 'letter_opener_web', '~> 1.3.0'
-  gem 'bullet', '~> 5.5.0', require: false
   gem 'rblineprof', '~> 0.3.6', platform: :mri, require: false
 
   # Better errors handler
@@ -272,6 +271,7 @@ group :development do
 end
 
 group :development, :test do
+  gem 'bullet', '~> 5.5.0', require: !!ENV['ENABLE_BULLET']
   gem 'pry-byebug', '~> 3.4.1', platform: :mri
   gem 'pry-rails', '~> 0.3.4'
 

config/initializers/bullet.rb

-if ENV['ENABLE_BULLET']
-  require 'bullet'
+if defined?(Bullet) && ENV['ENABLE_BULLET']
+  Rails.application.configure do
+    config.after_initialize do
+      Bullet.enable = true
 
-  Bullet.enable  = true
-  Bullet.console = true
+      Bullet.bullet_logger = true
+      Bullet.console = true
+      Bullet.raise = Rails.env.test?
+    end
+  end
 end