Add specs for overriding classification on import

ee/spec/requests/api/project_import_spec.rb

+require 'spec_helper'
+
+describe API::ProjectImport do
+  include ExternalAuthorizationServiceHelpers
+
+  let(:export_path) { "#{Dir.tmpdir}/project_export_spec" }
+  let(:user) { create(:user) }
+  let(:file) { File.join(Rails.root, 'spec', 'features', 'projects', 'import_export', 'test_project_export.tar.gz') }
+  let(:namespace) { create(:group) }
+  before do
+    allow_any_instance_of(Gitlab::ImportExport).to receive(:storage_path).and_return(export_path)
+
+    namespace.add_owner(user)
+  end
+
+  after do
+    FileUtils.rm_rf(export_path, secure: true)
+  end
+
+  describe 'POST /projects/import' do
+    it 'overrides the classification label when the service is enabled' do
+      enable_external_authorization_service_check
+      override_params = { 'external_authorization_classification_label' => 'Hello world' }
+
+      Sidekiq::Testing.inline! do
+        post api('/projects/import', user),
+             path: 'test-import',
+             file: fixture_file_upload(file),
+             namespace: namespace.id,
+             override_params: override_params
+      end
+      import_project = Project.find(json_response['id'])
+
+      expect(import_project.external_authorization_classification_label).to eq('Hello world')
+    end
+  end
+end

ee/spec/requests/api/projects_spec.rb

+require 'spec_helper'
+
+describe API::Projects do
+  include ExternalAuthorizationServiceHelpers
+
+  let(:user) { create(:user) }
+  let(:project) { create(:project, namespace: user.namespace) }
+
+  describe 'PUT /projects/:id' do
+    before do
+      enable_external_authorization_service_check
+    end
+
+    it 'updates the classification label when enabled' do
+      put(api("/projects/#{project.id}", user), external_authorization_classification_label: 'new label')
+
+      expect(response).to have_gitlab_http_status(200)
+
+      expect(project.reload.external_authorization_classification_label).to eq('new label')
+    end
+  end
+end