Return an array of pools from `connection_pools`

activerecord/CHANGELOG.md

+*   Return an array of pools from `connection_pools`.
+
+    *Rafael Mendonça França*
+
 *   Return a null column from `column_for_attribute` when no column exists.
 
     *Rafael Mendonça França*

activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb

@@ -2,7 +2,6 @@
 require 'thread_safe'
 require 'monitor'
 require 'set'
-require 'active_support/core_ext/string/filters'
 
 module ActiveRecord
   # Raised when a connection could not be obtained within the connection
@@ -517,15 +516,7 @@ def initialize
       def connection_pool_list
         owner_to_pool.values.compact
       end
-
-      def connection_pools
-        ActiveSupport::Deprecation.warn(<<-MSG.squish)
-          In the next release, this will return the same as `#connection_pool_list`.
-          (An array of pools, rather than a hash mapping specs to pools.)
-        MSG
-
-        Hash[connection_pool_list.map { |pool| [pool.spec, pool] }]
-      end
+      alias :connection_pools :connection_pool_list
 
       def establish_connection(owner, spec)
         @class_to_pool.clear

activerecord/test/cases/connection_adapters/connection_handler_test.rb

@@ -44,9 +44,7 @@ def test_retrieve_connection_pool_uses_superclass_pool_after_subclass_establish_
       end
 
       def test_connection_pools
-        assert_deprecated do
-          assert_equal({ Base.connection_pool.spec => @pool }, @handler.connection_pools)
-        end
+        assert_equal([@pool], @handler.connection_pools)
       end
     end
   end