Support Rails 8

.github/workflows/ci.yml

@@ -13,6 +13,12 @@ jobs:
       matrix:
         include:
           # Recent Rubies and Rails
+          - ruby-version: '3.3'
+            rails-version: '8.0'
+          - ruby-version: '3.2'
+            rails-version: '8.0'
+          - ruby-version: '3.2'
+            rails-version: '7.2'
           - ruby-version: '3.2'
             rails-version: '7.1'
           - ruby-version: '3.1'

Gemfile

@@ -60,7 +60,9 @@ end
 
 group :test do
   platforms(*(@windows_platforms + [:ruby])) do
-    if version == 'master' || version >= '6'
+    if version >= '8'
+      gem 'sqlite3', '~> 2.1'
+    elsif version == 'master' || version >= '6'
       gem 'sqlite3', '< 1.6'
     else
       gem 'sqlite3', '~> 1.3.13'

lib/active_model_serializers/adapter/base.rb

@@ -74,7 +74,8 @@ def fragment_cache(cached_hash, non_cached_hash)
       # see https://github.com/rails-api/active_model_serializers/pull/965
       # When <tt>options</tt> is +nil+, sets it to +{}+
       def serialization_options(options)
-        options ||= {} # rubocop:disable Lint/UselessAssignment
+        options ||= {}
+        options.frozen? ? options.dup : options
       end
 
       def root

test/action_controller/json_api/linked_test.rb

@@ -88,7 +88,7 @@ def render_collection_with_include
 
         setup do
           @routes = Rails.application.routes.draw do
-            ActiveSupport::Deprecation.silence do
+            (Rails.try(:deprecator) || ActiveSupport::Deprecation).silence do
               match ':action', to: LinkedTestController, via: [:get, :post]
             end
           end

test/active_model_serializers/register_jsonapi_renderer_test_isolated.rb

@@ -66,7 +66,7 @@ class WithoutRenderer < JsonApiRendererTest
       make_basic_app
 
       Rails.application.routes.draw do
-        ActiveSupport::Deprecation.silence do
+        (Rails.try(:deprecator) || ActiveSupport::Deprecation).silence do
           match ':action', to: TestController, via: [:get, :post]
         end
       end
@@ -112,7 +112,7 @@ class WithRenderer < JsonApiRendererTest
       make_basic_app
 
       Rails.application.routes.draw do
-        ActiveSupport::Deprecation.silence do
+        (Rails.try(:deprecator) || ActiveSupport::Deprecation).silence do
           match ':action', to: TestController, via: [:get, :post]
         end
       end