--- /dev/null
+require "application_system_test_case"
+
+class DiaryEntryTest < ApplicationSystemTestCase
+ def setup
+ create(:language, :code => "en")
+ @diary_entry = create(:diary_entry)
+ end
+
+ test "reply to diary entry should prefill the message subject" do
+ sign_in_as(create(:user))
+ visit diary_path
+
+ click_on "Reply to this entry"
+
+ assert page.has_content? "Send a new message"
+ assert_equal "Re: #{@diary_entry.title}", page.find_field("Subject").value
+ end
+end