add asserting that issue estimated hours is nil when creating minimal issue

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@10363 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/issue_test.rb

@@ -51,6 +51,7 @@ class IssueTest < ActiveSupport::TestCase
                       :subject => 'test_create')
     assert issue.save
     assert issue.description.nil?
+    assert_nil issue.estimated_hours
   end
 
   def test_create_with_required_custom_field