Revert changes made to machine find_or_create method in #32

Contributors.md

@@ -36,4 +36,5 @@
 - @gmitrev
 - @nblumoe
 - @reiner
-- @sanemat
+- @sanemat
+- @jonathan-wheeler

lib/state_machines/machine.rb

@@ -419,10 +419,8 @@ def find_or_create(owner_class, *args, &block)
         name = args.first || :state
 
         # Find an existing machine
-        machine = owner_class.respond_to?(:state_machines) &&
-          (args.first && owner_class.state_machines[name] || !args.first &&
-          owner_class.state_machines.values.first) || nil
-
+        machine = owner_class.respond_to?(:state_machines) && owner_class.state_machines[name]
+
         if machine
           # Only create a new copy if changes are being made to the machine in
           # a subclass

test/functional/driver_default_nonstandard_test.rb

@@ -4,7 +4,7 @@
 class DriverNonstandardTest < MiniTest::Test
   def setup
     @driver = Driver.new
-    @events = Driver.state_machine.events
+    @events = Driver.state_machine(:status).events
   end
 
   def test_should_have

test/functional/vehicle_insurance_test.rb

@@ -0,0 +1,25 @@
+require_relative '../test_helper'
+require_relative '../files/models/vehicle'
+
+class VehicleInsuranceTest < MiniTest::Test
+  def setup
+    @vehicle = Vehicle.new
+  end
+
+  def test_insurance_state_should_be_in_inactive_state
+    assert_equal 'inactive', @vehicle.insurance_state
+  end
+
+  def test_insurance_should_be_inactive
+    assert @vehicle.insurance_inactive?
+  end
+
+  def test_should_allow_buy_insurance
+    assert @vehicle.buy_insurance
+  end
+
+  def test_insurance_should_be_active_after_buy_event
+    @vehicle.buy_insurance
+    assert @vehicle.insurance_active?
+  end
+end

test/unit/machine/machine_finder_with_other_named_existing_on_same_class_test.rb

@@ -0,0 +1,14 @@
+require_relative '../../test_helper'
+
+class MachineFinderWithOtherNamedExistingOnSameClassTest < StateMachinesTest
+  def setup
+    @klass = Class.new
+    @existing_machine = StateMachines::Machine.new(@klass, :status)
+    @machine = StateMachines::Machine.find_or_create(@klass)
+  end
+
+  def test_should_create_a_new_machine
+    refute_same @machine, @existing_machine
+  end
+end
+