Accept replies to forum messages by subject recognition (#1616).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2294 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/fixtures/mail_handler/message_reply_by_subject.eml

@@ -0,0 +1,13 @@
+Message-ID: <4974C93E.3070005@somenet.foo>
+Date: Mon, 19 Jan 2009 19:41:02 +0100
+From: "John Smith" <jsmith@somenet.foo>
+User-Agent: Thunderbird 2.0.0.19 (Windows/20081209)
+MIME-Version: 1.0
+To: redmine@somenet.foo
+Subject: Re: [eCookbook - Help board - msg2] Reply to the first post
+Content-Type: text/plain; charset=UTF-8; format=flowed
+Content-Transfer-Encoding: 7bit
+
+This is a reply to a forum message.
+
+

test/unit/mail_handler_test.rb

@@ -153,6 +153,15 @@ class MailHandlerTest < Test::Unit::TestCase
     assert_equal Message.find(1), m.parent
   end
   
+  def test_reply_to_a_message_by_subject
+    m = submit_email('message_reply_by_subject.eml')
+    assert m.is_a?(Message)
+    assert !m.new_record?
+    m.reload
+    assert_equal 'Reply to the first post', m.subject
+    assert_equal Message.find(1), m.parent
+  end
+  
   def test_should_strip_tags_of_html_only_emails
     issue = submit_email('ticket_html_only.eml', :issue => {:project => 'ecookbook'})
     assert issue.is_a?(Issue)