Reinitialize an empty Wiki page after after project wiki is deleted (#34634).

git-svn-id: https://svn.redmine.org/redmine/trunk@22370 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/functional/wikis_controller_test.rb

@@ -35,13 +35,17 @@ class WikisControllerTest < Redmine::ControllerTest
     end
   end
 
-  def test_post_destroy_should_delete_wiki
+  def test_post_destroy_should_reinitialize_empty_wiki
     set_tmp_attachments_directory
     @request.session[:user_id] = 1
+    wiki = Project.find(1).wiki
     post :destroy, :params => {:id => 1, :confirm => 1}
     assert_redirected_to :controller => 'projects',
                          :action => 'show', :id => 'ecookbook'
-    assert_nil Project.find(1).wiki
+
+    new_wiki = Project.find(1).wiki
+    assert_not_equal wiki, new_wiki
+    assert_equal "Wiki", new_wiki.start_page
   end
 
   def test_not_found