merge callbacks_observers_test.rb into lifecycle_test.rb where other observers test reside

Benefits: test able to run independently, subclassing instead of changing the original Comment model
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

activerecord/test/cases/callbacks_observers_test.rb

-require "cases/helper"
-
-class Comment < ActiveRecord::Base
-  attr_accessor :callers
-
-  before_validation :record_callers
-
-  after_validation do
-    record_callers
-  end
-
-  def record_callers
-    callers << self.class if callers
-  end
-end
-
-class CommentObserver < ActiveRecord::Observer
-  attr_accessor :callers
-
-  def after_validation(model)
-    callers << self.class if callers
-  end
-end
-
-class CallbacksObserversTest < ActiveRecord::TestCase
-  def test_model_callbacks_fire_before_observers_are_notified
-    callers = []
-
-    comment = Comment.new
-    comment.callers = callers
-
-    CommentObserver.instance.callers = callers
-
-    comment.valid?
-    assert_equal [Comment, Comment, CommentObserver], callers, "model callbacks did not fire before observers were notified"
-  end
-end

activerecord/test/cases/lifecycle_test.rb

@@ -3,6 +3,7 @@
 require 'models/developer'
 require 'models/reply'
 require 'models/minimalistic'
+require 'models/comment'
 
 class SpecialDeveloper < Developer; end
 
@@ -57,6 +58,28 @@ def after_find(record)
   end
 end
 
+class ValidatedComment < Comment
+  attr_accessor :callers
+
+  before_validation :record_callers
+
+  after_validation do
+    record_callers
+  end
+
+  def record_callers
+    callers << self.class if callers
+  end
+end
+
+class ValidatedCommentObserver < ActiveRecord::Observer
+  attr_accessor :callers
+
+  def after_validation(model)
+    callers << self.class if callers
+  end
+end
+
 class LifecycleTest < ActiveRecord::TestCase
   fixtures :topics, :developers, :minimalistics
 
@@ -125,4 +148,15 @@ def test_after_find_can_be_observed_when_its_defined_on_the_model
   def test_invalid_observer
     assert_raise(ArgumentError) { Topic.observers = Object.new; Topic.instantiate_observers }
   end
+
+  test "model callbacks fire before observers are notified" do
+    callers = []
+
+    comment = ValidatedComment.new
+    comment.callers = ValidatedCommentObserver.instance.callers = callers
+
+    comment.valid?
+    assert_equal [ValidatedComment, ValidatedComment, ValidatedCommentObserver], callers,
+      "model callbacks did not fire before observers were notified"
+  end
 end