Add specs for abstract super class

lib/aasm/base.rb

@@ -54,20 +54,25 @@ module AASM
       # make sure to raise an error if no_direct_assignment is enabled
       # and attribute is directly assigned though
       aasm_name = @name
-      if !(klass.superclass.methods.include?(:abstract_class) &&
-        klass.superclass.abstract_class)
-        klass.send :define_method, "#{@state_machine.config.column}=", ->(state_name) do
-          if self.class.aasm(:"#{aasm_name}").state_machine.config.no_direct_assignment
-            raise AASM::NoDirectAssignmentError.new(
-              'direct assignment of AASM column has been disabled (see AASM configuration for this class)'
-            )
-          else
-            super(state_name)
-          end
+      return true if should_not_define_method(klass)
+      klass.send :define_method, "#{@state_machine.config.column}=", ->(state_name) do
+        if self.class.aasm(:"#{aasm_name}").state_machine.config.no_direct_assignment
+          raise AASM::NoDirectAssignmentError.new(
+            'direct assignment of AASM column has been disabled (see AASM configuration for this class)'
+          )
+        else
+          super(state_name)
         end
       end
     end
 
+    def should_not_define_method(klass)
+      (klass.methods.include?(:abstract_class) &&
+        klass.abstract_class) ||
+      (klass.superclass.methods.include?(:abstract_class) &&
+        klass.superclass.abstract_class)
+    end
+
     # This method is both a getter and a setter
     def attribute_name(column_name=nil)
       if column_name

spec/database.rb

@@ -14,6 +14,9 @@ ActiveRecord::Migration.suppress_messages do
   ActiveRecord::Migration.create_table "implemented_abstract_class_dsls", :force => true do |t|
     t.string "status"
   end
+  ActiveRecord::Migration.create_table "users", :force => true do |t|
+    t.string "status"
+  end
 
   ActiveRecord::Migration.create_table "complex_active_record_examples", :force => true do |t|
     t.string "left"

spec/models/active_record/person.rb

@@ -0,0 +1,23 @@
+class User < ActiveRecord::Base
+  self.abstract_class = true
+  self.table_name = 'users'
+
+  include AASM
+
+  aasm column: 'status' do
+    state :inactive, initial: true
+    state :active
+
+    event :activate do
+      transitions from: :inactive, to: :active
+    end
+
+    event :deactivate do
+      transitions from: :active, to: :inactive
+    end
+  end
+end
+
+
+class Person < User
+end

spec/unit/abstract_class_spec.rb

@@ -0,0 +1,27 @@
+require 'spec_helper'
+if defined?(ActiveRecord)
+  require 'models/active_record/person'
+
+  load_schema
+  describe 'Abstract subclassing' do
+
+    it 'should have the parent states' do
+      Person.aasm.states.each do |state|
+        expect(User.aasm.states).to include(state)
+      end
+      expect(Person.aasm.states).to eq(User.aasm.states)
+    end
+
+    it 'should have the same events as its parent' do
+      expect(User.aasm.events).to eq(Person.aasm.events)
+    end
+
+    it 'should not break aasm methods when super class is abstract_class' do
+      person = Person.new
+      person.status = 'active'
+      person.deactivate!
+      expect(person.aasm.current_state).to eq(:inactive)
+    end
+
+  end
+end