From 6529035ee128c9b995a7a85d347f20ed1412f3ab Mon Sep 17 00:00:00 2001
From: Jean-Philippe Lang <jp_lang@yahoo.fr>
Date: Tue, 26 Jun 2012 16:57:09 +0000
Subject: [PATCH] Fixed that wiki diff may produce html (#11209).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9895 e93f8b46-1217-0410-a6f0-8f06a7374b81
---
 lib/redmine/helpers/diff.rb             |  9 +++++----
 test/functional/wiki_controller_test.rb | 14 +++++++++++---
 2 files changed, 16 insertions(+), 7 deletions(-)

diff --git a/lib/redmine/helpers/diff.rb b/lib/redmine/helpers/diff.rb
index b11a5692e..86c87e9f9 100644
--- a/lib/redmine/helpers/diff.rb
+++ b/lib/redmine/helpers/diff.rb
@@ -50,16 +50,17 @@ module Redmine
               words_add += 1
             else
               del_at = pos unless del_at
-              deleted << ' ' + h(change[2])
+              deleted << ' ' unless deleted.empty?
+              deleted << h(change[2])
               words_del  += 1
             end
           end
           if add_at
-            words[add_at] = '<span class="diff_in">' + words[add_at]
-            words[add_to] = words[add_to] + '</span>'
+            words[add_at] = '<span class="diff_in">'.html_safe + words[add_at]
+            words[add_to] = words[add_to] + '</span>'.html_safe
           end
           if del_at
-            words.insert del_at - del_off + dels + words_add, '<span class="diff_out">' + deleted + '</span>'
+            words.insert del_at - del_off + dels + words_add, '<span class="diff_out">'.html_safe + deleted + '</span>'.html_safe
             dels += 1
             del_off += words_del
             words_del = 0
diff --git a/test/functional/wiki_controller_test.rb b/test/functional/wiki_controller_test.rb
index b87a26aee..f4e82d7d0 100644
--- a/test/functional/wiki_controller_test.rb
+++ b/test/functional/wiki_controller_test.rb
@@ -495,11 +495,19 @@ class WikiControllerTest < ActionController::TestCase
   end
 
   def test_diff
-    get :diff, :project_id => 1, :id => 'CookBook_documentation', :version => 2, :version_from => 1
+    content = WikiPage.find(1).content
+    assert_difference 'WikiContent::Version.count', 2 do
+      content.text = "Line removed\nThis is a sample text for testing diffs"
+      content.save!
+      content.text = "This is a sample text for testing diffs\nLine added"
+      content.save!
+    end
+
+    get :diff, :project_id => 1, :id => 'CookBook_documentation', :version => content.version, :version_from => (content.version - 1)
     assert_response :success
     assert_template 'diff'
-    assert_tag :tag => 'span', :attributes => { :class => 'diff_in'},
-                               :content => /updated/
+    assert_select 'span.diff_out', :text => 'Line removed'
+    assert_select 'span.diff_in', :text => 'Line added'
   end
 
   def test_annotate