another README example

spec/database.rb

@@ -1,5 +1,5 @@
 ActiveRecord::Migration.suppress_messages do
-  %w{gates multiple_gates readers writers transients simples no_scopes multiple_no_scopes no_direct_assignments multiple_no_direct_assignments thieves multiple_thieves localizer_test_models persisted_states provided_and_persisted_states with_enums with_true_enums with_false_enums false_states multiple_with_enums multiple_with_true_enums multiple_with_false_enums multiple_false_states}.each do |table_name|
+  %w{gates multiple_gates readers writers transients simples no_scopes multiple_no_scopes no_direct_assignments multiple_no_direct_assignments thieves multiple_thieves localizer_test_models persisted_states provided_and_persisted_states with_enums with_true_enums with_false_enums false_states multiple_with_enums multiple_with_true_enums multiple_with_false_enums multiple_false_states readme_jobs}.each do |table_name|
     ActiveRecord::Migration.create_table table_name, :force => true do |t|
       t.string "aasm_state"
     end

spec/models/active_record/readme_job.rb

@@ -0,0 +1,21 @@
+class ReadmeJob < ActiveRecord::Base
+  include AASM
+
+  aasm do
+    state :sleeping, :initial => true
+    state :running
+    state :cleaning
+
+    event :run do
+      transitions :from => :sleeping, :to => :running
+    end
+
+    event :clean do
+      transitions :from => :running, :to => :cleaning
+    end
+
+    event :sleep do
+      transitions :from => [:running, :cleaning], :to => :sleeping
+    end
+  end
+end

spec/unit/persistence/active_record_persistence_spec.rb

@@ -521,3 +521,20 @@ describe 'basic example with two state machines' do
     expect(example.aasm(:sync).current_state).to eql :unsynced
   end
 end
+
+describe 'testing the README examples' do
+  it 'Usage' do
+    job = ReadmeJob.new
+
+    expect(job.sleeping?).to eql true
+    expect(job.may_run?).to eql true
+
+    job.run
+
+    expect(job.running?).to eql true
+    expect(job.sleeping?).to eql false
+    expect(job.may_run?).to eql false
+
+    expect { job.run }.to raise_error(AASM::InvalidTransition)
+  end
+end

spec/unit/readme_spec.rb

@@ -23,7 +23,6 @@ describe 'testing the README examples' do
           transitions :from => [:running, :cleaning], :to => :sleeping
         end
       end
-
     end
 
     job = Job.new