Fix groups API to accept path when transferring a project

* Use standard helpers for finding group and project

changelogs/unreleased/19966-api-call-to-move-project-to-different-group-fails-when-using-group-and-project-names-instead-of-id.yml

+---
+title: Allow group and project paths when transferring projects via the API
+merge_request:
+author:

doc/api/groups.md

@@ -335,7 +335,7 @@ POST  /groups/:id/projects/:project_id
 Parameters:
 - `id` (required) - The ID or path of a group
-- `project_id` (required) - The ID of a project
+- `project_id` (required) - The ID or path of a project
 ## Update group

lib/api/groups.rb

@@ -156,12 +156,12 @@ module API
         success Entities::GroupDetail
       end
       params do
-        requires :project_id, type: String, desc: 'The ID of the project'
+        requires :project_id, type: String, desc: 'The ID or path of the project'
       end
       post ":id/projects/:project_id" do
         authenticated_as_admin!
-        group = Group.find_by(id: params[:id])
-        project = Project.find(params[:project_id])
+        group = find_group!(params[:id])
+        project = find_project!(params[:project_id])
         result = ::Projects::TransferService.new(project, current_user).execute(group)
         if result

spec/requests/api/groups_spec.rb

@@ -23,6 +23,7 @@ describe API::Groups, api: true  do
     context "when unauthenticated" do
       it "returns authentication error" do
         get api("/groups")
+
         expect(response).to have_http_status(401)
       end
     end
@@ -30,6 +31,7 @@ describe API::Groups, api: true  do
     context "when authenticated as user" do
       it "normal user: returns an array of groups of user1" do
         get api("/groups", user1)
+
         expect(response).to have_http_status(200)
         expect(json_response).to be_an Array
         expect(json_response.length).to eq(1)
@@ -48,6 +50,7 @@ describe API::Groups, api: true  do
     context "when authenticated as admin" do
       it "admin: returns an array of all groups" do
         get api("/groups", admin)
+
         expect(response).to have_http_status(200)
         expect(json_response).to be_an Array
         expect(json_response.length).to eq(2)
@@ -94,6 +97,7 @@ describe API::Groups, api: true  do
       it "returns all groups you have access to" do
         public_group = create :group, :public
+
         get api("/groups", user1), all_available: true
         expect(response).to have_http_status(200)
@@ -140,6 +144,7 @@ describe API::Groups, api: true  do
     context 'when unauthenticated' do
       it 'returns authentication error' do
         get api('/groups/owned')
+
         expect(response).to have_http_status(401)
       end
     end
@@ -147,6 +152,7 @@ describe API::Groups, api: true  do
     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)
@@ -179,6 +185,7 @@ describe API::Groups, api: true  do
       it "does not return a non existing group" do
         get api("/groups/1328", user1)
+
         expect(response).to have_http_status(404)
       end
@@ -192,12 +199,14 @@ describe API::Groups, api: true  do
     context "when authenticated as admin" do
       it "returns any existing group" do
         get api("/groups/#{group2.id}", admin)
+
         expect(response).to have_http_status(200)
         expect(json_response['name']).to eq(group2.name)
       end
       it "does not return a non existing group" do
         get api("/groups/1328", admin)
+
         expect(response).to have_http_status(404)
       end
     end
@@ -205,12 +214,14 @@ describe API::Groups, api: true  do
     context 'when using group path in URL' do
       it 'returns any existing group' do
         get api("/groups/#{group1.path}", admin)
+
         expect(response).to have_http_status(200)
         expect(json_response['name']).to eq(group1.name)
       end
       it 'does not return a non existing group' do
         get api('/groups/unknown', admin)
+
         expect(response).to have_http_status(404)
       end
@@ -302,6 +313,7 @@ describe API::Groups, api: true  do
       it "does not return a non existing group" do
         get api("/groups/1328/projects", user1)
+
         expect(response).to have_http_status(404)
       end
@@ -325,6 +337,7 @@ describe API::Groups, api: true  do
     context "when authenticated as admin" do
       it "should return any existing group" do
         get api("/groups/#{group2.id}/projects", admin)
+
         expect(response).to have_http_status(200)
         expect(json_response.length).to eq(1)
         expect(json_response.first['name']).to eq(project2.name)
@@ -332,6 +345,7 @@ describe API::Groups, api: true  do
       it "should not return a non existing group" do
         get api("/groups/1328/projects", admin)
+
         expect(response).to have_http_status(404)
       end
     end
@@ -347,6 +361,7 @@ describe API::Groups, api: true  do
       it 'does not return a non existing group' do
         get api('/groups/unknown/projects', admin)
+
         expect(response).to have_http_status(404)
       end
@@ -362,6 +377,7 @@ describe API::Groups, api: true  do
     context "when authenticated as user without group permissions" do
       it "does not create group" do
         post api("/groups", user1), attributes_for(:group)
+
         expect(response).to have_http_status(403)
       end
     end
@@ -371,6 +387,7 @@ describe API::Groups, api: true  do
         group = attributes_for(:group, { request_access_enabled: false })
         post api("/groups", user3), group
+
         expect(response).to have_http_status(201)
         expect(json_response["name"]).to eq(group[:name])
@@ -380,17 +397,20 @@ describe API::Groups, api: true  do
       it "does not create group, duplicate" do
         post api("/groups", user3), { name: 'Duplicate Test', path: group2.path }
+
         expect(response).to have_http_status(400)
         expect(response.message).to eq("Bad Request")
       end
       it "returns 400 bad request error if name not given" do
         post api("/groups", user3), { path: group2.path }
+
         expect(response).to have_http_status(400)
       end
       it "returns 400 bad request error if path not given" do
         post api("/groups", user3), { name: 'test' }
+
         expect(response).to have_http_status(400)
       end
     end
@@ -400,18 +420,22 @@ describe API::Groups, api: true  do
     context "when authenticated as user" do
       it "removes group" do
         delete api("/groups/#{group1.id}", user1)
+
         expect(response).to have_http_status(200)
       end
       it "does not remove a group if not an owner" do
         user4 = create(:user)
         group1.add_master(user4)
+
         delete api("/groups/#{group1.id}", user3)
+
         expect(response).to have_http_status(403)
       end
       it "does not remove a non existing group" do
         delete api("/groups/1328", user1)
+
         expect(response).to have_http_status(404)
       end
@@ -425,11 +449,13 @@ describe API::Groups, api: true  do
     context "when authenticated as admin" do
       it "removes any existing group" do
         delete api("/groups/#{group2.id}", admin)
+
         expect(response).to have_http_status(200)
       end
       it "does not remove a non existing group" do
         delete api("/groups/1328", admin)
+
         expect(response).to have_http_status(404)
       end
     end
@@ -437,15 +463,17 @@ describe API::Groups, api: true  do
   describe "POST /groups/:id/projects/:project_id" do
     let(:project) { create(:project) }
+    let(:project_path) { "#{project.namespace.path}%2F#{project.path}" }
+
     before(:each) do
       allow_any_instance_of(Projects::TransferService).
         to receive(:execute).and_return(true)
-      allow(Project).to receive(:find).and_return(project)
     end
     context "when authenticated as user" do
       it "does not transfer project to group" do
         post api("/groups/#{group1.id}/projects/#{project.id}", user2)
+
         expect(response).to have_http_status(403)
       end
     end
@@ -453,8 +481,45 @@ describe API::Groups, api: true  do
     context "when authenticated as admin" do
       it "transfers project to group" do
         post api("/groups/#{group1.id}/projects/#{project.id}", admin)
+
         expect(response).to have_http_status(201)
       end
+
+      context 'when using project path in URL' do
+        context 'with a valid project path' do
+          it "transfers project to group" do
+            post api("/groups/#{group1.id}/projects/#{project_path}", admin)
+
+            expect(response).to have_http_status(201)
+          end
+        end
+
+        context 'with a non-existent project path' do
+          it "does not transfer project to group" do
+            post api("/groups/#{group1.id}/projects/nogroup%2Fnoproject", admin)
+
+            expect(response).to have_http_status(404)
+          end
+        end
+      end
+
+      context 'when using a group path in URL' do
+        context 'with a valid group path' do
+          it "transfers project to group" do
+            post api("/groups/#{group1.path}/projects/#{project_path}", admin)
+
+            expect(response).to have_http_status(201)
+          end
+        end
+
+        context 'with a non-existent group path' do
+          it "does not transfer project to group" do
+            post api("/groups/noexist/projects/#{project_path}", admin)
+
+            expect(response).to have_http_status(404)
+          end
+        end
+      end
     end
   end
 end