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

app/controllers/wikis_controller.rb

   # Delete a project's wiki
   def destroy
     if request.post? && params[:confirm] && @project.wiki
-      @project.wiki.destroy
+      if @project.wiki.destroy
+        Wiki.create_default(@project) unless @wiki
+      end
       redirect_to project_path(@project)
     end
   end

app/models/enabled_module.rb

     when 'wiki'
       # Create a wiki with a default start page
       if project && project.wiki.nil?
-        Wiki.create(:project => project, :start_page => 'Wiki')
+        Wiki.create_default(project)
       end
     end
   end

app/models/wiki.rb

     end
   end
 
+  def self.create_default(project)
+    create(:project => project, :start_page => 'Wiki')
+  end
+
   # turn a string into a valid page title
   def self.titleize(title)
     # replace spaces with _ and remove unwanted caracters

test/functional/wikis_controller_test.rb

     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

test/unit/wiki_test.rb

     assert wiki.save
   end
 
+  def test_create_default
+    wiki = Wiki.create_default(Project.find(1))
+    assert wiki.save
+    assert_equal "Wiki", wiki.start_page
+  end
+
   def test_update
     @wiki = Wiki.find(1)
     @wiki.start_page = "Another start page"