hunk.code_window:                 on="validation_end")])
       """
       def __init__(self,
                    metrics: Union[str, List[str], Dict[str, str]],
                    on: Union[str, List[str]] = "validation_end"):
           super(TuneReportCallback, self).__init__(on)
           if isinstance(metrics, str):
               metrics = [metrics]
           self._metrics = metrics
  
hunk.labels: keep keep keep keep keep replace keep keep keep keep keep
hunk.after_edit:                  metrics: Union[None, str, List[str], Dict[str, str]] = None,
  
hunk.file_path: python/ray/tune/integration/pytorch_lightning.py
hunk.type: replace
file: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package io.ray.streaming.state.keystate.state.impl;
  
  import io.ray.streaming.state.backend.KeyStateBackend;
  import io.ray.streaming.state.backend.impl.MemoryStateBackend;
  import io.ray.streaming.state.keystate.KeyGroup;
  import io.ray.streaming.state.keystate.desc.ListStateDescriptor;
  import java.util.Arrays;
  import java.util.HashMap;
  import java.util.List;
  import org.testng.Assert;
  import org.testng.annotations.BeforeClass;
  import org.testng.annotations.Test;
  
  public class ListStateImplTest {
  
    ListStateImpl<Integer> listState;
    KeyStateBackend keyStateBackend;
  
    @BeforeClass
    public void setUp() throws Exception {
      keyStateBackend = new KeyStateBackend(1, new KeyGroup(1, 2),
          new MemoryStateBackend(new HashMap<>()));
      ListStateDescriptor<Integer> descriptor = ListStateDescriptor
          .build("ListStateImplTest", Integer.class);
      descriptor.setTableName("table");
  
      listState = (ListStateImpl<Integer>) keyStateBackend.getListState(descriptor);
    }
  
    @Test
    public void testAddGet() throws Exception {
      keyStateBackend.setContext(1L, 1);
      List<Integer> list = listState.get();
      Assert.assertEquals(list.size(), 0);
  
      listState.add(1);
      listState.add(2);
  
      Assert.assertEquals(listState.get(), Arrays.asList(1, 2));
  
      listState.add(3);
      Assert.assertEquals(listState.get(), Arrays.asList(1, 2, 3));
  
      list = listState.get();
      list.set(1, -1);
      listState.add(4);
      Assert.assertEquals(listState.get(), Arrays.asList(1, -1, 3, 4));
  
      keyStateBackend.setCurrentKey(2);
  
      listState.add(5);
      listState.add(6);
  
      Assert.assertEquals(listState.get(), Arrays.asList(5, 6));
    }
  
  
    @Test(dependsOnMethods = {"testAddGet"})
    public void testUpdate() throws Exception {
      Assert.assertEquals(listState.get(), Arrays.asList(5, 6));
  
      listState.update(Arrays.asList(7, 8, 9));
  
      List<Integer> list = listState.get();
      Assert.assertEquals(list, Arrays.asList(7, 8, 9));
  
      list.set(1, 10);
      listState.update(list);
      Assert.assertEquals(list, Arrays.asList(7, 10, 9));
  
      listState.update(null);
      Assert.assertEquals(listState.get().size(), 0);
    }
  }
  