add spec file

spec/controllers/items_controller_spec.rb

@@ -0,0 +1,45 @@
+require 'rails_helper'
+
+describe ItemsController do
+  fixtures :all
+
+  def valid_attributes
+    FactoryBot.attributes_for(:item)
+  end
+
+  describe 'GET index', solr: true do
+    before do
+      Item.reindex
+    end
+
+    describe 'When logged in as Librarian' do
+      login_fixture_librarian
+
+      it 'should not get index with inventory_file_id' do
+        get :index, params: { inventory_file_id: 1 }
+        expect(response).to be_success
+        assigns(:inventory_file).should eq InventoryFile.find(1)
+        expect(assigns(:items)).to eq Item.inventory_items(assigns(:inventory_file), 'not_on_shelf').order('items.id').page(1)
+      end
+    end
+
+    describe 'When logged in as User' do
+      login_fixture_user
+
+      it 'should not get index with inventory_file_id' do
+        get :index, params: { inventory_file_id: 1 }
+        expect(response).to be_forbidden
+      end
+    end
+
+    describe 'When not logged in' do
+
+      it 'should not get index with inventory_file_id' do
+        get :index, params: { inventory_file_id: 1 }
+        expect(response).to redirect_to new_user_session_url
+        assigns(:inventory_file).should_not be_nil
+      end
+    end
+  end
+
+end