@@ -0,0 +1,929 @@
+package com.google.sps.utilities;%0A %0Aimport com.google.sps.data.VolunteeringOpportunity;%0Aimport com.google.sps.data.OpportunitySignup;%0Aimport java.util.UUID;%0A %0A/* Class containing utilities for testing. */%0Apublic class TestUtils %7B%0A    private static final String EVENT_ID = %220883de79-17d7-49a3-a866-dbd5135062a8%22;%0A    private static final String NAME = %22Performer%22;%0A    private static final int NUMBER_OF_SPOTS = 240;%0A    private static final String VOLUNTEER_EMAIL = %22volunteer@gmail.com%22;%0A %0A    public static VolunteeringOpportunity newVolunteeringOpportunity() %7B%0A      return new VolunteeringOpportunity.Builder(EVENT_ID, NAME, NUMBER_OF_SPOTS).build();%0A    %7D%0A %0A    public static OpportunitySignup newOpportunitySignup(String opportunityId) %7B%0A      return new OpportunitySignup.Builder(opportunityId, VOLUNTEER_EMAIL).build();%0A    %7D%0A %0A    public static String newRandomId() %7B%0A      return UUID.randomUUID().toString();%0A    %7D%0A%7D%0A

Add utility to generate random ID.