add test of gmail ISO-8859-2 mail receiving (#16122)

git-svn-id: http://svn.redmine.org/redmine/trunk@12903 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/fixtures/mail_handler/gmail-iso8859-2.eml

@@ -0,0 +1,11 @@
+Date: Tue, 13 Aug 2013 10:56:04 +0700
+From: John Smith <JSmith@somenet.foo>
+Subject: =?ISO-8859-2?Q?Nikad_vi=B9e?=
+To: redmine@somenet.foo
+Content-Type: text/plain; charset=ISO-8859-2
+Content-Transfer-Encoding: quoted-printable
+
+Na =B9triku se su=B9i =B9osi=E6.
+
+--=20
+=B9osi=E6

test/unit/mail_handler_test.rb

@@ -540,6 +540,17 @@ class MailHandlerTest < ActiveSupport::TestCase
     assert_equal str, issue.description
   end
 
+  def test_gmail_iso8859_2
+    issue = submit_email(
+              'gmail-iso8859-2.eml',
+              :issue => {:project => 'ecookbook'}
+            )
+    assert_kind_of Issue, issue
+    str = "Na \xc5\xa1triku se su\xc5\xa1i \xc5\xa1osi\xc4\x87."
+    str.force_encoding('UTF-8') if str.respond_to?(:force_encoding)
+    assert issue.description.include?(str)
+  end
+
   def test_add_issue_with_japanese_subject
     issue = submit_email(
               'subject_japanese_1.eml',