diff --git a/actiontext/test/test_helper.rb b/actiontext/test/test_helper.rb
index 9aca998e1b4..975b8cb89b9 100644
--- a/actiontext/test/test_helper.rb
+++ b/actiontext/test/test_helper.rb
@@ -10,6 +10,8 @@ require "rails/test_help"
 require "rails/test_unit/reporter"
 Rails::TestUnitReporter.executable = "bin/test"
 
+require "active_record/testing/query_assertions"
+
 # Disable available locale checks to allow to add locale after initialized.
 I18n.enforce_available_locales = false
 
@@ -22,22 +24,7 @@ if ActiveSupport::TestCase.respond_to?(:fixture_path=)
 end
 
 class ActiveSupport::TestCase
-  def assert_queries(expected_count)
-    ActiveRecord::Base.connection.materialize_transactions
-
-    queries = []
-    ActiveSupport::Notifications.subscribe("sql.active_record") do |*, payload|
-      queries << payload[:sql] unless %w[ SCHEMA TRANSACTION ].include?(payload[:name])
-    end
-
-    yield.tap do
-      assert_equal expected_count, queries.size, "#{queries.size} instead of #{expected_count} queries were executed. #{queries.inspect}"
-    end
-  end
-
-  def assert_no_queries(&block)
-    assert_queries(0, &block)
-  end
+  include ActiveRecord::Testing::QueryAssertions
 
   private
     def create_file_blob(filename:, content_type:, metadata: nil)
diff --git a/actionview/test/activerecord/relation_cache_test.rb b/actionview/test/activerecord/relation_cache_test.rb
index 26f3bfbcbc8..259707edd5e 100644
--- a/actionview/test/activerecord/relation_cache_test.rb
+++ b/actionview/test/activerecord/relation_cache_test.rb
@@ -1,8 +1,11 @@
 # frozen_string_literal: true
 
 require "active_record_unit"
+require "active_record/testing/query_assertions"
 
 class RelationCacheTest < ActionView::TestCase
+  include ActiveRecord::Testing::QueryAssertions
+
   tests ActionView::Helpers::CacheHelper
 
   def setup
@@ -24,17 +27,4 @@ class RelationCacheTest < ActionView::TestCase
   end
 
   def view_cache_dependencies; []; end
-
-  def assert_queries(num)
-    ActiveRecord::Base.connection.materialize_transactions
-    count = 0
-
-    ActiveSupport::Notifications.subscribe("sql.active_record") do |_name, _start, _finish, _id, payload|
-      count += 1 unless ["SCHEMA", "TRANSACTION"].include? payload[:name]
-    end
-
-    result = yield
-    assert_equal num, count, "#{count} instead of #{num} queries were executed."
-    result
-  end
 end
diff --git a/activerecord/lib/active_record/testing/query_assertions.rb b/activerecord/lib/active_record/testing/query_assertions.rb
new file mode 100644
index 00000000000..bcba661dfee
--- /dev/null
+++ b/activerecord/lib/active_record/testing/query_assertions.rb
@@ -0,0 +1,47 @@
+# frozen_string_literal: true
+
+module ActiveRecord
+  module Testing
+    module QueryAssertions # :nodoc:
+      def assert_queries(expected_count = 1, options = {})
+        ignore_none = options.fetch(:ignore_none) { expected_count == :any }
+        ActiveRecord::Base.connection.materialize_transactions
+        SQLCounter.clear_log
+        result = yield
+        the_log = ignore_none ? SQLCounter.log_all : SQLCounter.log
+
+        if expected_count == :any
+          assert_operator the_log.size, :>=, 1, "1 or more queries expected, but none were executed."
+        else
+          message = "#{the_log.size} instead of #{expected_count} queries were executed.#{the_log.size == 0 ? '' : "\nQueries:\n#{the_log.join("\n")}"}"
+          assert_equal expected_count, the_log.size, message
+        end
+
+        result
+      end
+
+      def assert_no_queries(&block)
+        assert_queries(0, &block)
+      end
+
+      class SQLCounter # :nodoc:
+        class << self
+          attr_accessor :ignored_sql, :log, :log_all
+          def clear_log; self.log = []; self.log_all = []; end
+        end
+
+        clear_log
+
+        def call(*, values)
+          return if values[:cached]
+
+          sql = values[:sql]
+          self.class.log_all << sql
+          self.class.log << sql unless ["SCHEMA", "TRANSACTION"].include? values[:name]
+        end
+      end
+
+      ActiveSupport::Notifications.subscribe("sql.active_record", SQLCounter.new)
+    end
+  end
+end
diff --git a/activerecord/test/cases/dirty_test.rb b/activerecord/test/cases/dirty_test.rb
index 0f84e39e9f4..91a1672917b 100644
--- a/activerecord/test/cases/dirty_test.rb
+++ b/activerecord/test/cases/dirty_test.rb
@@ -649,7 +649,7 @@ class DirtyTest < ActiveRecord::TestCase
         jon = Person.create! first_name: "Jon"
       end
 
-      assert ActiveRecord::SQLCounter.log_all.none? { |sql| sql.include?("followers_count") }
+      assert SQLCounter.log_all.none? { |sql| sql.include?("followers_count") }
 
       jon.reload
       assert_equal "Jon", jon.first_name
diff --git a/activerecord/test/cases/test_case.rb b/activerecord/test/cases/test_case.rb
index 5bb101c6741..d359d4180b4 100644
--- a/activerecord/test/cases/test_case.rb
+++ b/activerecord/test/cases/test_case.rb
@@ -4,6 +4,7 @@ require "active_support"
 require "active_support/testing/autorun"
 require "active_support/testing/method_call_assertions"
 require "active_support/testing/stream"
+require "active_record/testing/query_assertions"
 require "active_record/fixtures"
 
 require "cases/validations_repair_helper"
@@ -14,6 +15,7 @@ module ActiveRecord
   # Defines some test assertions to test against SQL queries.
   class TestCase < ActiveSupport::TestCase #:nodoc:
     include ActiveSupport::Testing::MethodCallAssertions
+    include ActiveRecord::Testing::QueryAssertions
     include ActiveSupport::Testing::Stream
     include ActiveRecord::TestFixtures
     include ActiveRecord::ValidationsRepairHelper
@@ -47,26 +49,6 @@ module ActiveRecord
       assert failed_patterns.empty?, "Query pattern(s) #{failed_patterns.map(&:inspect).join(', ')} not found.#{SQLCounter.log.size == 0 ? '' : "\nQueries:\n#{SQLCounter.log.join("\n")}"}"
     end
 
-    def assert_queries(num = 1, options = {})
-      ignore_none = options.fetch(:ignore_none) { num == :any }
-      ActiveRecord::Base.connection.materialize_transactions
-      SQLCounter.clear_log
-      x = yield
-      the_log = ignore_none ? SQLCounter.log_all : SQLCounter.log
-      if num == :any
-        assert_operator the_log.size, :>=, 1, "1 or more queries expected, but none were executed."
-      else
-        mesg = "#{the_log.size} instead of #{num} queries were executed.#{the_log.size == 0 ? '' : "\nQueries:\n#{the_log.join("\n")}"}"
-        assert_equal num, the_log.size, mesg
-      end
-      x
-    end
-
-    def assert_no_queries(options = {}, &block)
-      options.reverse_merge! ignore_none: true
-      assert_queries(0, options, &block)
-    end
-
     def assert_column(model, column_name, msg = nil)
       assert has_column?(model, column_name), msg
     end
@@ -135,23 +117,4 @@ module ActiveRecord
       super if current_adapter?(:SQLite3Adapter)
     end
   end
-
-  class SQLCounter
-    class << self
-      attr_accessor :ignored_sql, :log, :log_all
-      def clear_log; self.log = []; self.log_all = []; end
-    end
-
-    clear_log
-
-    def call(name, start, finish, message_id, values)
-      return if values[:cached]
-
-      sql = values[:sql]
-      self.class.log_all << sql
-      self.class.log << sql unless ["SCHEMA", "TRANSACTION"].include? values[:name]
-    end
-  end
-
-  ActiveSupport::Notifications.subscribe("sql.active_record", SQLCounter.new)
 end
diff --git a/activestorage/test/test_helper.rb b/activestorage/test/test_helper.rb
index 41f97e9dfa8..78b03301d1d 100644
--- a/activestorage/test/test_helper.rb
+++ b/activestorage/test/test_helper.rb
@@ -9,6 +9,7 @@ require "active_support/test_case"
 require "active_support/core_ext/object/try"
 require "active_support/testing/autorun"
 require "active_support/configuration_file"
+require "active_record/testing/query_assertions"
 require "active_storage/service/mirror_service"
 require "image_processing/mini_magick"
 
@@ -46,6 +47,8 @@ ActiveStorage.verifier = ActiveSupport::MessageVerifier.new("Testing")
 ActiveStorage::FixtureSet.file_fixture_path = File.expand_path("fixtures/files", __dir__)
 
 class ActiveSupport::TestCase
+  include ActiveRecord::Testing::QueryAssertions
+
   self.file_fixture_path = ActiveStorage::FixtureSet.file_fixture_path
 
   include ActiveRecord::TestFixtures
@@ -60,23 +63,6 @@ class ActiveSupport::TestCase
     ActiveStorage::Current.reset
   end
 
-  def assert_queries(expected_count)
-    ActiveRecord::Base.connection.materialize_transactions
-
-    queries = []
-    ActiveSupport::Notifications.subscribe("sql.active_record") do |*, payload|
-      queries << payload[:sql] unless %w[ SCHEMA TRANSACTION ].include?(payload[:name])
-    end
-
-    yield.tap do
-      assert_equal expected_count, queries.size, "#{queries.size} instead of #{expected_count} queries were executed. #{queries.inspect}"
-    end
-  end
-
-  def assert_no_queries(&block)
-    assert_queries(0, &block)
-  end
-
   private
     def create_blob(key: nil, data: "Hello world!", filename: "hello.txt", content_type: "text/plain", identify: true, service_name: nil, record: nil)
       ActiveStorage::Blob.create_and_upload! key: key, io: StringIO.new(data), filename: filename, content_type: content_type, identify: identify, service_name: service_name, record: record