Fix Lint/DeprecatedClassMethods

.rubocop_todo.yml

@@ -1,13 +1,6 @@
 # Remove these configuration records
 # one by one as the offenses are removed from the code base.
 
-# Offense count: 2
-# Cop supports --auto-correct.
-Lint/DeprecatedClassMethods:
-  Exclude:
-    - 'spec/rails_helper.rb'
-    - 'test/test_helper.rb'
-
 # Offense count: 3
 Lint/HandleExceptions:
   Exclude:

spec/rails_helper.rb

@@ -2,7 +2,7 @@
 ENV["RAILS_ENV"] ||= 'test'
 ENV["DB"] ||= 'sqlite'
 
-unless File.exists?(File.expand_path('../../test/dummy/config/database.yml', __FILE__))
+unless File.exist?(File.expand_path('../../test/dummy/config/database.yml', __FILE__))
   warn "WARNING: No database.yml detected for the dummy app, please run `rake prepare` first"
 end
 

test/test_helper.rb

@@ -7,7 +7,7 @@ end
 ENV["RAILS_ENV"] = "test"
 ENV["DB"] ||= "sqlite"
 
-unless File.exists?(File.expand_path('../../test/dummy/config/database.yml', __FILE__))
+unless File.exist?(File.expand_path('../../test/dummy/config/database.yml', __FILE__))
   warn "WARNING: No database.yml detected for the dummy app, please run `rake prepare` first"
 end