[Test] Fix Rails 6.1.4 fixture issue

Gemfile

@@ -16,12 +16,12 @@ gemspec
 # This Rails version will be the one used when running `bundle exec rake test` locally
 # Uncomment the line then run `bundle install`
 # gem "rails", "7.1.2"
-# gem 'sqlite3', '~> 1.7'
-# gem 'nokogiri', '~> 1.16', '>= 1.16.7'
+# gem "sqlite3", "~> 1.7"
+# gem "nokogiri", "~> 1.16", ">= 1.16.7"
 
 group :development, :test do
   # To use a debugger:
-  # gem 'byebug'
+  # gem "byebug"
 
   # Linters
   gem "rubocop", "~> 1.71", ">= 1.71.1", require: false

Gemfile.lock

@@ -209,14 +209,11 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.13.1)
     simplecov_json_formatter (0.1.4)
-    sqlite3 (2.5.0-aarch64-linux-gnu)
-    sqlite3 (2.5.0-aarch64-linux-musl)
-    sqlite3 (2.5.0-arm-linux-gnu)
-    sqlite3 (2.5.0-arm-linux-musl)
-    sqlite3 (2.5.0-arm64-darwin)
-    sqlite3 (2.5.0-x86_64-darwin)
-    sqlite3 (2.5.0-x86_64-linux-gnu)
-    sqlite3 (2.5.0-x86_64-linux-musl)
+    sqlite3 (1.7.3-aarch64-linux)
+    sqlite3 (1.7.3-arm-linux)
+    sqlite3 (1.7.3-arm64-darwin)
+    sqlite3 (1.7.3-x86_64-darwin)
+    sqlite3 (1.7.3-x86_64-linux)
     stringio (3.1.2)
     thor (1.3.2)
     timeout (0.4.3)

test/dummy/app/models/active_storage_validations/check.rb

@@ -23,11 +23,11 @@ class ActiveStorageValidations::Check < ApplicationRecord
 
   # We ensure that the gem is working fine when using fixtures
   has_one_attached :working_with_fixture
-  validates :working_with_fixture, content_type: "image/png", processable_file: true
+  validates :working_with_fixture, content_type: "image/png", processable_file: true, attached: true
 
   # We ensure that the gem is working fine when using fixtures + variant
   has_one_attached :working_with_fixture_and_variant do |attachable|
     attachable.variant :medium, resize_to_fill: [ 800, 400 ], preprocessed: true
   end
-  validates :working_with_fixture_and_variant, content_type: "image/png", processable_file: true
+  validates :working_with_fixture_and_variant, content_type: "image/png", processable_file: true, attached: true
 end

test/fixtures/active_storage/attachments.yml

@@ -2,3 +2,7 @@ first_active_storage_validations_check_working_with_fixture_attachment:
   name: working_with_fixture
   record: one (ActiveStorageValidations::Check)
   blob: first_active_storage_validations_check_working_with_fixture_blob
+second_active_storage_validations_check_working_with_fixture_attachment:
+  name: working_with_fixture_and_variant
+  record: one (ActiveStorageValidations::Check)
+  blob: second_active_storage_validations_check_working_with_fixture_blob

test/fixtures/active_storage/blobs.yml

@@ -1 +1,2 @@
 first_active_storage_validations_check_working_with_fixture_blob: <%= ActiveStorage::FixtureSet.blob filename: "image_150x150.png", service_name: "test_fixtures" %>
+second_active_storage_validations_check_working_with_fixture_blob: <%= ActiveStorage::FixtureSet.blob filename: "image_150x150.png", service_name: "test_fixtures" %>

test/global/active_storage_validations_test.rb

@@ -30,28 +30,18 @@
       assert_equal(Marcel::MimeType.for(declared_type: "application/asv_test"), "application/asv_test")
     end
   end
+end
 
-  if Rails.gem_version >= Gem::Version.new("7.0.0.rc1")
-    describe "working with active_storage fixtures" do
-      subject { instance.public_send(attribute) && instance }
-
-      let(:attachable) { png_file }
-
-      describe "base case" do
-        let(:attribute) { :working_with_fixture }
-
-        it "works fine" do
-          subject && assert(subject.valid?)
-        end
-      end
-
-      describe "with variant" do
-        let(:attribute) { :working_with_fixture_and_variant }
+if Rails.gem_version >= Gem::Version.new("7.0.0.rc1")
+  # This test is to ensure that the gem is properly working with ActiveStorage
+  # fixtures. These feature is available since Rails 7.0.
+  class ActiveStorageValidations::FixtureTest < ActiveSupport::TestCase
+    setup do
+      @check = active_storage_validations_checks(:one)
+    end
 
-        it "works fine" do
-          subject && assert(subject.valid?)
-        end
-      end
+    test "working with active_storage fixtures" do
+      assert(@check.valid?)
     end
   end
 end

test/test_helper.rb

@@ -34,11 +34,13 @@
 Rails::TestUnitReporter.executable = "bin/test"
 
 # Load fixtures from the engine
-if ActiveSupport::TestCase.respond_to?(:fixture_path=)
-  ActiveSupport::TestCase.fixture_path = File.expand_path("fixtures", __dir__)
-  ActionDispatch::IntegrationTest.fixture_path = ActiveSupport::TestCase.fixture_path
-  ActiveSupport::TestCase.file_fixture_path = ActiveSupport::TestCase.fixture_path + "/files"
-  ActiveSupport::TestCase.fixtures :all
+if ActiveSupport::TestCase.respond_to?(:fixture_paths=)
+  fixture_path = File.expand_path("fixtures", __dir__)
+  ActiveSupport::TestCase.fixture_paths = [ fixture_path ]
+  ActionDispatch::IntegrationTest.fixture_paths = [ fixture_path ]
+  ActiveSupport::TestCase.file_fixture_path = ActiveSupport::TestCase.fixture_paths.first + "/files"
+  # Only load fixtures globally for Rails 7+
+  ActiveSupport::TestCase.fixtures :all if Rails.gem_version >= Gem::Version.new("7.0.0.rc1")
 end
 
 # Load test support files