diff --git a/test/fixtures/plugins/foo_plugin/app/models/foo.rb b/test/fixtures/plugins/foo_plugin/app/models/foo.rb
new file mode 100644
index 000000000..0152b6e1a
--- /dev/null
+++ b/test/fixtures/plugins/foo_plugin/app/models/foo.rb
@@ -0,0 +1,3 @@
+# frozen_string_literal: true
+class Foo < ActiveRecord::Base
+end
diff --git a/test/unit/lib/redmine/plugin_loader_test.rb b/test/unit/lib/redmine/plugin_loader_test.rb
index 458460986..a0bec218e 100644
--- a/test/unit/lib/redmine/plugin_loader_test.rb
+++ b/test/unit/lib/redmine/plugin_loader_test.rb
@@ -56,6 +56,10 @@ class Redmine::PluginLoaderTest < ActiveSupport::TestCase
     assert File.exist?("#{@klass.public_directory}/foo_plugin/stylesheets/foo.css")
   end
 
+  def test_autoload
+    assert_equal true, Object.const_defined?(:Foo)
+  end
+
   def clear_public
     FileUtils.rm_rf 'tmp/public'
   end