Closed issue are not overdue, fixes r2140 (#2337).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2361 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/issue_test.rb

@@ -226,5 +226,6 @@ class IssueTest < Test::Unit::TestCase
     assert !Issue.new(:due_date => Date.today).overdue?
     assert !Issue.new(:due_date => 1.day.from_now.to_date).overdue?
     assert !Issue.new(:due_date => nil).overdue?
+    assert !Issue.new(:due_date => 1.day.ago.to_date, :status => IssueStatus.find(:first, :conditions => {:is_closed => true})).overdue?
   end
 end