Commits on Jul 17, 2022

1. Add new Rails/RootPathnameMethods cop …

   `Rails.root` is an instance of `Pathname`. So instead of
   
   ```ruby
   File.open(Rails.root.join('db', 'schema.rb'))
   File.open(Rails.root.join('db', 'schema.rb'), 'w')
   File.read(Rails.root.join('db', 'schema.rb'))
   File.binread(Rails.root.join('db', 'schema.rb'))
   File.write(Rails.root.join('db', 'schema.rb'), content)
   File.binwrite(Rails.root.join('db', 'schema.rb'), content)
   ```
   
   we can simply write
   
   ```ruby
   Rails.root.join('db', 'schema.rb').open
   Rails.root.join('db', 'schema.rb').open('w')
   Rails.root.join('db', 'schema.rb').read
   Rails.root.join('db', 'schema.rb').binread
   Rails.root.join('db', 'schema.rb').write(content)
   Rails.root.join('db', 'schema.rb').binwrite(content)
   ```
   
   This cop works best when used together with
   [`Style/FileRead`](rubocop/rubocop#10261),
   [`Style/FileWrite`](rubocop/rubocop#10260),
   and [`Rails/RootJoinChain`](rubocop#586).

   

   leoarnold committed Jul 17, 2022
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