```ruby
$LOAD_PATH.unshift File.expand_path('../../lib', __FILE__)
require 'chatwork'
require 'dotenv'
require 'simplecov'

Dotenv.load

SimpleCov.start do
  add_filter "/vendor/"
  add_filter "/spec/"
end
```

Add logger only while test
user
```ruby
$LOAD_PATH.unshift File.expand_path('../../lib', __FILE__)
require 'chatwork'
require 'dotenv'
require 'simplecov'

Dotenv.load

SimpleCov.start do
  add_filter "/vendor/"
  add_filter "/spec/"
end

# テスト用にロガーを差し込む
module Chatwork
  class Base
    self.logger = Logger.new(STDERR)
  end
end
```
assistant