Added API endpoint groups/owned

changelogs/unreleased/feature-api_owned_resource.yml

+---
+title: Add api endpoint `/groups/owned`
+merge_request: 7103
+author: Borja Aparicio

doc/api/groups.md

@@ -26,6 +26,15 @@ GET /groups
 
 You can search for groups by name or path, see below.
 
+=======
+## List owned groups
+
+Get a list of groups which are owned by the authenticated user.
+
+```
+GET /groups/owned
+```
+
 ## List a group's projects
 
 Get a list of projects in this group.

lib/api/groups.rb

@@ -26,6 +26,16 @@ module API
         present @groups, with: Entities::Group
       end
 
+      # Get list of owned groups for authenticated user
+      #
+      # Example Request:
+      #   GET /groups/owned
+      get '/owned' do
+        @groups = current_user.owned_groups
+        @groups = paginate @groups
+        present @groups, with: Entities::Group, user: current_user
+      end
+
       # Create group. Available only for users who can create groups.
       #
       # Parameters:

spec/requests/api/groups_spec.rb

@@ -68,6 +68,24 @@ describe API::API, api: true  do
     end
   end
 
+  describe 'GET /groups/owned' do
+    context 'when unauthenticated' do
+      it 'returns authentication error' do
+        get api('/groups/owned')
+        expect(response).to have_http_status(401)
+      end
+    end
+
+    context 'when authenticated as group owner' do
+      it 'returns an array of groups the user owns' do
+        get api('/groups/owned', user2)
+        expect(response).to have_http_status(200)
+        expect(json_response).to be_an Array
+        expect(json_response.first['name']).to eq(group2.name)
+      end
+    end
+  end
+
   describe "GET /groups/:id" do
     context "when authenticated as user" do
       it "returns one of user1's groups" do