Make WikiPage comparable according to StaticModel interface

* Add WikiPage#id method returning associated SHA for wiki page commit

2 files changed, 17 insertions, 0 deletions

diff --git a/app/models/wiki_page.rb b/app/models/wiki_page.rb
index 6347b274341..2caebb496db 100644
--- a/app/models/wiki_page.rb
+++ b/app/models/wiki_page.rb
@@ -207,6 +207,10 @@ class WikiPage
     'projects/wikis/wiki_page'
   end
 
+  def id
+    page.version.to_s
+  end
+
   private
 
   def set_attributes
diff --git a/spec/models/wiki_page_spec.rb b/spec/models/wiki_page_spec.rb
index 579ebac7afb..753dc938c52 100644
--- a/spec/models/wiki_page_spec.rb
+++ b/spec/models/wiki_page_spec.rb
@@ -318,6 +318,19 @@ describe WikiPage, models: true do
     end
   end
 
+  describe '#==' do
+    let(:original_wiki_page) { create(:wiki_page) }
+
+    it 'returns true for identical wiki page' do
+      expect(original_wiki_page).to eq(original_wiki_page)
+    end
+
+    it 'returns false for updated wiki page' do
+      updated_wiki_page = original_wiki_page.update("Updated content")
+      expect(original_wiki_page).not_to eq(updated_wiki_page)
+    end
+  end
+
   private
 
   def remove_temp_repo(path)