Tests for association callbacks

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@1654 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/test/association_callbacks_test.rb

@@ -0,0 +1,100 @@
+require 'abstract_unit'
+require 'fixtures/post'
+require 'fixtures/comment'
+require 'fixtures/author'
+require 'fixtures/category'
+require 'fixtures/project'
+require 'fixtures/developer'
+
+class AssociationCallbacksTest < Test::Unit::TestCase
+  fixtures :posts, :authors, :projects, :developers
+
+  def setup
+   @david = authors(:david)
+   @thinking = posts(:thinking)
+   @authorless = posts(:authorless)
+   assert @david.post_log.empty?
+  end
+  
+  def test_adding_macro_callbacks
+    @david.posts_with_callbacks << @thinking
+    assert_equal ["before_adding#{@thinking.id}", "after_adding#{@thinking.id}"], @david.post_log
+    @david.posts_with_callbacks << @thinking
+    assert_equal ["before_adding#{@thinking.id}", "after_adding#{@thinking.id}", "before_adding#{@thinking.id}", 
+                  "after_adding#{@thinking.id}"], @david.post_log
+  end
+  
+  def test_adding_with_proc_callbacks
+    @david.posts_with_proc_callbacks << @thinking
+    assert_equal ["before_adding#{@thinking.id}", "after_adding#{@thinking.id}"], @david.post_log
+    @david.posts_with_proc_callbacks << @thinking
+    assert_equal ["before_adding#{@thinking.id}", "after_adding#{@thinking.id}", "before_adding#{@thinking.id}", 
+                  "after_adding#{@thinking.id}"], @david.post_log
+  end
+  
+  def test_removing_with_macro_callbacks
+    first_post, second_post = @david.posts_with_callbacks[0, 2]
+    @david.posts_with_callbacks.delete(first_post)
+    assert_equal ["before_removing#{first_post.id}", "after_removing#{first_post.id}"], @david.post_log
+    @david.posts_with_callbacks.delete(second_post)
+    assert_equal ["before_removing#{first_post.id}", "after_removing#{first_post.id}", "before_removing#{second_post.id}", 
+                  "after_removing#{second_post.id}"], @david.post_log
+  end
+
+  def test_removing_with_proc_callbacks
+    first_post, second_post = @david.posts_with_callbacks[0, 2]
+    @david.posts_with_proc_callbacks.delete(first_post)
+    assert_equal ["before_removing#{first_post.id}", "after_removing#{first_post.id}"], @david.post_log
+    @david.posts_with_proc_callbacks.delete(second_post)
+    assert_equal ["before_removing#{first_post.id}", "after_removing#{first_post.id}", "before_removing#{second_post.id}", 
+                  "after_removing#{second_post.id}"], @david.post_log
+  end
+  
+  def test_multiple_callbacks
+    @david.posts_with_multiple_callbacks << @thinking
+    assert_equal ["before_adding#{@thinking.id}", "before_adding_proc#{@thinking.id}", "after_adding#{@thinking.id}", 
+                  "after_adding_proc#{@thinking.id}"], @david.post_log
+    @david.posts_with_multiple_callbacks << @thinking
+    assert_equal ["before_adding#{@thinking.id}", "before_adding_proc#{@thinking.id}", "after_adding#{@thinking.id}", 
+                  "after_adding_proc#{@thinking.id}", "before_adding#{@thinking.id}", "before_adding_proc#{@thinking.id}", 
+                  "after_adding#{@thinking.id}", "after_adding_proc#{@thinking.id}"], @david.post_log
+  end
+  
+  def test_has_and_belongs_to_many_add_callback
+    david = developers(:david)
+    ar = projects(:active_record)
+    assert ar.developers_log.empty?
+    ar.developers_with_callbacks << david
+    assert_equal ["before_adding#{david.id}", "after_adding#{david.id}"], ar.developers_log
+    ar.developers_with_callbacks << david
+    assert_equal ["before_adding#{david.id}", "after_adding#{david.id}", "before_adding#{david.id}", 
+                  "after_adding#{david.id}"], ar.developers_log
+  end
+  
+  def test_has_and_belongs_to_many_remove_callback
+    david = developers(:david)
+    jamis = developers(:jamis)
+    ar = projects(:active_record)
+    assert ar.developers_log.empty?
+    ar.developers_with_callbacks.delete(david)
+    assert_equal ["before_removing#{david.id}", "after_removing#{david.id}"], ar.developers_log
+    
+    ar.developers_with_callbacks.delete(jamis)
+    assert_equal ["before_removing#{david.id}", "after_removing#{david.id}", "before_removing#{jamis.id}", 
+                  "after_removing#{jamis.id}"], ar.developers_log
+  end
+  
+  def test_dont_add_if_before_callback_raises_exception
+    assert !@david.unchangable_posts.include?(@authorless)
+    begin
+      @david.unchangable_posts << @authorless
+    rescue Exception => e
+    end
+    assert @david.post_log.empty?
+    assert !@david.unchangable_posts.include?(@authorless)
+    @david.reload
+    assert !@david.unchangable_posts.include?(@authorless)
+  end
+
+end
+