postgresql_access Resource fails when multiple databases or users are specified

[schrd]

👻 Brief Description

pg_hba.conf specification allows to use multiple users and databases in one line, separated by commas. It fails in the second converge when these are specified in a postgresql_access resource.

🥞 Cookbook version

11.5.1

👩‍🍳 Chef-Infra Version

17.10

🎩 Platform details

Debian 11

Steps To Reproduce

Add the following code to the recipe:

postgresql_access 'access with multiple databases' do                           
  type 'host'                                                                   
  database 'foo,bar'                                                            
  user 'john,doe'                                                               
  address '127.0.0.1/32'                                                        
  auth_method 'peer'                                                            
end                                                                                                                                                                                                            

It produces in the first converge the following valid output:

host    foo,bar                         john,doe                        127.0.0.1/32            peer

In the second converge it fails with the following error:

         NoMethodError
         -------------
         undefined method `named_captures' for nil:NilClass
         
         Cookbook Trace: (most recent call first)
         ----------------------------------------
         /opt/kitchen/cache/cookbooks/postgresql/libraries/access.rb:155:in `block in split_entries'
         /opt/kitchen/cache/cookbooks/postgresql/libraries/access.rb:155:in `map!'
         /opt/kitchen/cache/cookbooks/postgresql/libraries/access.rb:155:in `split_entries'
         /opt/kitchen/cache/cookbooks/postgresql/libraries/access.rb:89:in `read!'
         /opt/kitchen/cache/cookbooks/postgresql/libraries/access.rb:139:in `read'
         /opt/kitchen/cache/cookbooks/postgresql/resources/access.rb:66:in `block in class_from_file'

🚓 Expected behavior

postgresql_access resource should accept all valid pg_hba.conf options.