code: package io.ray.serve.poll;
  
  import org.testng.Assert;
  import org.testng.annotations.Test;
  
  public class LongPollNamespaceTest {
  
    @Test
    public void toStringTest() {
      String key = LongPollNamespace.ROUTE_TABLE.toString();
      Assert.assertEquals(key, "LongPollNamespace.ROUTE_TABLE");
    }
  
    @Test
    public void parseFromTest() {
      String key = "ROUTE_TABLE";
      LongPollNamespace longPollNamespace = LongPollNamespace.parseFrom(key);
      Assert.assertEquals(longPollNamespace, LongPollNamespace.ROUTE_TABLE);
  
      String unknown = "unknown";
      longPollNamespace = LongPollNamespace.parseFrom(unknown);
      Assert.assertNull(longPollNamespace);
    }
  }
  