allow reloading of models

spec/active_record/has_aux_table_spec.rb

@@ -722,4 +722,22 @@ RSpec.describe HasAuxTable do
       expect(fork1.num_tongs).to eq(3)
     end
   end
+
+  it "can redefine constants" do
+    class TestModel < ActiveRecord::Base
+      include HasAuxTable
+    end
+
+    class TestModelSpecific < TestModel
+      aux_table :specific
+    end
+
+    Object.send(:remove_const, :TestModelSpecific)
+
+    expect {
+      class TestModelSpecific < TestModel
+        aux_table :specific
+      end
+    }.not_to raise_error
+  end
 end