Added observers to watch model objects for mail delivery instead of calling Mailer.

* Added an IssueObserver to watch when Issues are created
* Added a JournalObserver to watch when Journals are created (Issue updates)
* Added a NewsObserver for News items.
* Added a DocumentObserver for Document notifications.
* Setup IssuesController#new to use the IssueObserver.
* Setup IssuesController#edit to use the IssueObserver.
* Setup IssuesController#bulk_edit to use the JournalObserver.
* Removed the Mailer call in Changeset#scan_commit_for_issue_ids, the
  JournalObserver will handle it.
* Removed Mailer calls in MailHandler in favor of the Observers.

  #2659

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2637 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/functional/issues_controller_test.rb

@@ -503,6 +503,21 @@ class IssuesControllerTest < Test::Unit::TestCase
     assert [mail.bcc, mail.cc].flatten.include?(User.find(3).mail)
   end
   
+  def test_post_new_should_send_a_notification
+    ActionMailer::Base.deliveries.clear
+    @request.session[:user_id] = 2
+    post :new, :project_id => 1, 
+               :issue => {:tracker_id => 3,
+                          :subject => 'This is the test_new issue',
+                          :description => 'This is the description',
+                          :priority_id => 5,
+                          :estimated_hours => '',
+                          :custom_field_values => {'2' => 'Value for field 2'}}
+    assert_redirected_to :action => 'show'
+    
+    assert_equal 1, ActionMailer::Base.deliveries.size
+  end
+  
   def test_post_should_preserve_fields_values_on_validation_failure
     @request.session[:user_id] = 2
     post :new, :project_id => 1, 
@@ -760,6 +775,20 @@ class IssuesControllerTest < Test::Unit::TestCase
     # No email should be sent
     assert ActionMailer::Base.deliveries.empty?
   end
+
+  def test_post_edit_should_send_a_notification
+    @request.session[:user_id] = 2
+    ActionMailer::Base.deliveries.clear
+    issue = Issue.find(1)
+    old_subject = issue.subject
+    new_subject = 'Subject modified by IssuesControllerTest#test_post_edit'
+    
+    post :edit, :id => 1, :issue => {:subject => new_subject,
+                                     :priority_id => '6',
+                                     :category_id => '1' # no change
+                                    }
+    assert_equal 1, ActionMailer::Base.deliveries.size
+  end
   
   def test_post_edit_with_invalid_spent_time
     @request.session[:user_id] = 2
@@ -797,6 +826,22 @@ class IssuesControllerTest < Test::Unit::TestCase
     assert_equal 1, journal.details.size
   end
 
+  def test_bullk_edit_should_send_a_notification
+    @request.session[:user_id] = 2
+    ActionMailer::Base.deliveries.clear
+    post(:bulk_edit,
+         {
+           :ids => [1, 2],
+           :priority_id => 7,
+           :assigned_to_id => '',
+           :custom_field_values => {'2' => ''},
+           :notes => 'Bulk editing'
+         })
+
+    assert_response 302
+    assert_equal 2, ActionMailer::Base.deliveries.size
+  end
+
   def test_bulk_edit_custom_field
     @request.session[:user_id] = 2
     # update issues priority