diff --git a/spec/controllers/new_user/dossiers_controller_spec.rb b/spec/controllers/new_user/dossiers_controller_spec.rb
index 22c7ff106..3d891b1f9 100644
--- a/spec/controllers/new_user/dossiers_controller_spec.rb
+++ b/spec/controllers/new_user/dossiers_controller_spec.rb
@@ -96,6 +96,47 @@ describe NewUser::DossiersController, type: :controller do
     end
   end
 
+  describe "#forbid_invite_submission!" do
+    let(:user) { create(:user) }
+    let(:asked_dossier) { create(:dossier) }
+    let(:ensure_authorized) { :forbid_invite_submission! }
+    let(:submit_action) { 'submit' }
+
+    before do
+      @controller.params = @controller.params.merge(dossier_id: asked_dossier.id, submit_action: submit_action)
+      allow(@controller).to receive(:current_user).and_return(user)
+      allow(@controller).to receive(:redirect_to)
+    end
+
+    context 'when a user save their own draft' do
+      let(:asked_dossier) { create(:dossier, user: user) }
+      let(:submit_action) { 'draft' }
+
+      it_behaves_like 'does not redirect nor flash'
+    end
+
+    context 'when a user submit their own dossier' do
+      let(:asked_dossier) { create(:dossier, user: user) }
+      let(:submit_action) { 'submit' }
+
+      it_behaves_like 'does not redirect nor flash'
+    end
+
+    context 'when an invite save the draft for a dossier where they where invited' do
+      before { create(:invite, dossier: asked_dossier, user: user, type: 'InviteUser') }
+      let(:submit_action) { 'draft' }
+
+      it_behaves_like 'does not redirect nor flash'
+    end
+
+    context 'when an invite submit a dossier where they where invited' do
+      before { create(:invite, dossier: asked_dossier, user: user, type: 'InviteUser') }
+      let(:submit_action) { 'submit' }
+
+      it_behaves_like 'redirects and flashes'
+    end
+  end
+
   describe 'attestation' do
     before { sign_in(user) }