use migration helpers in spec

lib/active_record/aux_table.rb

@@ -76,18 +76,19 @@ module ActiveRecord
       end
 
       # Main DSL method for defining auxiliary tables
-      sig { params(table_name: T.any(String, Symbol)).returns(AuxTableConfig) }
-      def aux_table(table_name)
-        table_name = table_name.to_sym
+      sig { params(aux_name: T.any(String, Symbol)).returns(AuxTableConfig) }
+      def aux_table(aux_name)
+        base_table = self.table_name
+        aux_table_name = :"#{base_table}_#{aux_name}_aux"
 
-        if aux_table_configurations.key?(table_name)
+        if aux_table_configurations.key?(aux_table_name)
           Kernel.raise ArgumentError,
-                       "Auxiliary table '#{table_name}' is already defined"
+                       "Auxiliary '#{aux_name}' (table '#{aux_table_name}') is already defined"
         end
 
-        aux_table_configurations[table_name] = config =
-          generate_aux_model_class(table_name)
-        setup_schema_loading_hook(table_name)
+        aux_table_configurations[aux_table_name] = config =
+          generate_aux_model_class(aux_table_name)
+        setup_schema_loading_hook(aux_table_name)
         setup_auto_join_queries(config)
 
         config

spec/active_record/aux_table_spec.rb

@@ -48,11 +48,11 @@ RSpec.describe ActiveRecord::AuxTable do
     end
 
     class Car < Vehicle
-      aux_table :vehicles_car_aux
+      aux_table :car
     end
 
     class Boat < Vehicle
-      aux_table :vehicles_boat_aux
+      aux_table :boat
     end
   end
 
@@ -504,21 +504,15 @@ RSpec.describe ActiveRecord::AuxTable do
     it "raises error when auxiliary table defines column that exists in main table" do
       # Create a test schema with overlapping columns
       ActiveRecord::Schema.define do
-        create_table :test_overlap_mains do |t|
-          t.string :type, null: false
+        create_base_table :test_overlap_mains do |t|
           t.string :name
           t.string :description
-          t.timestamps
+
+          t.create_aux :overlap do |t|
+            t.string :name
+            t.string :extra_data
           end
 
-        create_table :test_overlap_auxes do |t|
-          t.references :test_overlap_main,
-                       null: false,
-                       foreign_key: {
-                         to_table: :test_overlap_mains
-                       }
-          t.string :name # This overlaps with main table
-          t.string :extra_data
           t.timestamps
         end
       end
@@ -530,58 +524,25 @@ RSpec.describe ActiveRecord::AuxTable do
 
       expect {
         class TestOverlapChild < TestOverlapMain
-          aux_table :test_overlap_auxes
+          aux_table :overlap
         end
 
         # Trigger schema loading to activate validation
         TestOverlapChild.load_schema
-      }.to raise_error(
-        ArgumentError,
-        /Auxiliary table 'test_overlap_auxes' defines column\(s\) 'name'/
-      )
-    end
-
-    it "allows auxiliary table with non-overlapping columns" do
-      # Create a test schema with no overlapping columns
-      ActiveRecord::Schema.define do
-        create_table :test_no_overlap_main do |t|
-          t.string :type, null: false
-          t.string :name
-          t.timestamps
-        end
-
-        create_table :test_no_overlap_aux do |t|
-          t.references :test_no_overlap_main, null: false, foreign_key: true
-          t.string :fuel_type # No overlap
-          t.decimal :engine_size
-          t.timestamps
-        end
-      end
-
-      class TestNoOverlapMain < ActiveRecord::Base
-        include ActiveRecord::AuxTable
-      end
-
-      expect {
-        class TestNoOverlapChild < TestNoOverlapMain
-          aux_table :test_no_overlap_aux
-        end
-      }.not_to raise_error
+      }.to raise_error(ArgumentError, /defines column\(s\) 'name'/)
     end
 
     it "ignores system columns and foreign keys when checking for overlaps" do
       # Create a test schema where system columns are duplicated (which should be allowed)
       ActiveRecord::Schema.define do
-        create_table :test_system_cols_main do |t|
-          t.string :type, null: false
+        create_base_table :test_system_cols_main do |t|
           t.string :name
+
+          t.create_aux :has_timestamps do |t|
             t.timestamps
           end
 
-        create_table :test_system_cols_aux do |t|
-          t.references :test_system_cols_main, null: false, foreign_key: true
-          t.string :special_data
-          t.timestamps # These are system columns and should be ignored
+          t.timestamps
         end
       end
 
@@ -591,7 +552,7 @@ RSpec.describe ActiveRecord::AuxTable do
 
       expect {
         class TestSystemColsChild < TestSystemColsMain
-          aux_table :test_system_cols_aux
+          aux_table :has_timestamps
         end
       }.not_to raise_error
     end