From af6b01f55d96ccf9560251707a2136050b0a6648 Mon Sep 17 00:00:00 2001
From: Eric Davis <edavis@littlestreamsoftware.com>
Date: Wed, 20 Aug 2008 05:09:13 +0000
Subject: [PATCH] Hiding the View Differences button when a wiki page's history
 only has one version.

Patch contributed by Chaoqun Zou (#1743)


git-svn-id: http://redmine.rubyforge.org/svn/trunk@1749 e93f8b46-1217-0410-a6f0-8f06a7374b81
---
 app/views/wiki/history.rhtml            |  2 +-
 test/functional/wiki_controller_test.rb | 12 +++++++++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/app/views/wiki/history.rhtml b/app/views/wiki/history.rhtml
index c78ae115a..7ce78a0f2 100644
--- a/app/views/wiki/history.rhtml
+++ b/app/views/wiki/history.rhtml
@@ -30,6 +30,6 @@
 <% end %>
 </tbody>
 </table>
-<%= submit_tag l(:label_view_diff), :class => 'small' %>
+<%= submit_tag l(:label_view_diff), :class => 'small' if show_diff %>
 <span class="pagination"><%= pagination_links_full @version_pages, @version_count, :page_param => :p %></span>
 <% end %>
diff --git a/test/functional/wiki_controller_test.rb b/test/functional/wiki_controller_test.rb
index bbfdc8e7f..b5325357c 100644
--- a/test/functional/wiki_controller_test.rb
+++ b/test/functional/wiki_controller_test.rb
@@ -109,8 +109,18 @@ class WikiControllerTest < Test::Unit::TestCase
     assert_template 'history'
     assert_not_nil assigns(:versions)
     assert_equal 3, assigns(:versions).size
+    assert_select "input[type=submit][name=commit]"
   end
-  
+
+  def test_history_with_one_version
+    get :history, :id => 1, :page => 'Another_page'
+    assert_response :success
+    assert_template 'history'
+    assert_not_nil assigns(:versions)
+    assert_equal 1, assigns(:versions).size
+    assert_select "input[type=submit][name=commit]", false
+  end
+
   def test_diff
     get :diff, :id => 1, :page => 'CookBook_documentation', :version => 2, :version_from => 1
     assert_response :success