1 files changed, 110 insertions, 0 deletions
diff --git a/activerecord/test/lifecycle_test.rb b/activerecord/test/lifecycle_test.rb
new file mode 100755
index 0000000000..8b34c8c24c
--- /dev/null
+++ b/activerecord/test/lifecycle_test.rb
@@ -0,0 +1,110 @@
+# require File.dirname(__FILE__) + '/../dev-utils/eval_debugger'
+require 'abstract_unit'
+require 'fixtures/topic'
+require 'fixtures/developer'
+
+class Topic; def after_find() end end
+class Developer; def after_find() end end
+
+class TopicManualObserver
+  include Singleton
+
+  attr_reader :action, :object, :callbacks
+
+  def initialize
+    Topic.add_observer(self)
+    @callbacks = []
+  end
+
+  def update(callback_method, object)
+    @callbacks << { "callback_method" => callback_method, "object" => object }
+  end
+
+  def has_been_notified?
+    !@callbacks.empty?
+  end
+end
+
+class TopicaObserver < ActiveRecord::Observer
+  def self.observed_class() Topic end
+  
+  attr_reader :topic
+  
+  def after_find(topic)
+    @topic = topic
+  end
+end
+
+class TopicObserver < ActiveRecord::Observer
+  attr_reader :topic
+  
+  def after_find(topic)
+    @topic = topic
+  end
+end
+
+class MultiObserver < ActiveRecord::Observer
+  attr_reader :record
+  
+  def self.observed_class() [ Topic, Developer ] end
+
+  def after_find(record)
+    @record = record
+  end
+
+end
+
+class LifecycleTest < Test::Unit::TestCase
+  def setup
+    @topics, @developers = create_fixtures("topics", "developers")
+  end
+
+  def test_before_destroy
+    assert_equal 2, Topic.count
+    Topic.find(1).destroy
+    assert_equal 0, Topic.count
+  end
+  
+  def test_after_save
+    topic_observer = TopicManualObserver.instance
+
+    topic = Topic.find(1)
+    topic.title = "hello"
+    topic.save
+    
+    assert topic_observer.has_been_notified?
+    assert_equal :after_save, topic_observer.callbacks.last["callback_method"]
+  end
+  
+  def test_observer_update_on_save
+    topic_observer = TopicManualObserver.instance
+
+    topic = Topic.find(1)    
+    assert topic_observer.has_been_notified?
+    assert_equal :after_find, topic_observer.callbacks.first["callback_method"]
+  end
+  
+  def test_auto_observer
+    topic_observer = TopicaObserver.instance
+
+    topic = Topic.find(1)    
+    assert_equal topic_observer.topic.title, topic.title
+  end
+  
+  def test_infered_auto_observer
+    topic_observer = TopicObserver.instance
+
+    topic = Topic.find(1)    
+    assert_equal topic_observer.topic.title, topic.title
+  end
+  
+  def test_observing_two_classes
+    multi_observer = MultiObserver.instance
+
+    topic = Topic.find(1)
+    assert_equal multi_observer.record.title, topic.title
+
+    developer = Developer.find(1)    
+    assert_equal multi_observer.record.name, developer.name
+  end
+end
+\ No newline at end of file