Added 'email sending test' functionality.

Go to Admin -> Mail notifications and click on 'Send a test email'.
If an error occurs while sending the mail, the error message is displayed to the user.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@632 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/admin_controller.rb

@@ -56,6 +56,20 @@ class AdminController < ApplicationController
     end
   end
   
+  def test_email
+    raise_delivery_errors = ActionMailer::Base.raise_delivery_errors
+    # Force ActionMailer to raise delivery errors so we can catch it
+    ActionMailer::Base.raise_delivery_errors = true
+    begin
+      @test = Mailer.deliver_test(logged_in_user)
+      flash[:notice] = l(:notice_email_sent, logged_in_user.mail)
+    rescue Exception => e
+      flash[:error] = l(:notice_email_error, e.message)
+    end
+    ActionMailer::Base.raise_delivery_errors = raise_delivery_errors
+    redirect_to :action => 'mail_options'
+  end
+  
   def info
     @db_adapter_name = ActiveRecord::Base.connection.adapter_name
     @flags = Hash.new

app/models/mailer.rb

@@ -113,4 +113,11 @@ class Mailer < ActionMailer::Base
     @subject        = "[#{message.board.project.name} - #{message.board.name}] #{message.subject}"
     @body['message'] = message
   end
+  
+  def test(user)
+    set_language_if_valid(user.language)
+    @recipients     = user.mail
+    @from           = Setting.mail_from
+    @subject        = 'Redmine'
+  end
 end

app/views/admin/mail_options.rhtml

@@ -16,10 +16,11 @@
 <div class="clear"></div>
 </fieldset>
 <% end %>
-
 <br />
-<p><%= check_all_links('mail_options_form') %></p>
+<%= check_all_links('mail_options_form') %>
 </div>
 
-<%= submit_tag l(:button_save) %>
+<p><%= submit_tag l(:button_save) %></p>
 <% end %>
+
+<%= link_to l(:label_send_test_email), :action => 'test_email' %>

app/views/mailer/test.rhtml

@@ -0,0 +1 @@
+This is a test email sent by Redmine.