content: /*
   * 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 org.apache.kafka.server.util;
  
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.Timeout;
  
  import java.util.AbstractMap.SimpleImmutableEntry;
  import java.util.HashMap;
  import java.util.Iterator;
  import java.util.Map;
  import java.util.Map.Entry;
  import java.util.TreeMap;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  
  @Timeout(value = 60)
  public class TranslatedValueMapViewTest {
      private static Map<String, Integer> createTestMap() {
          Map<String, Integer> testMap = new TreeMap<>();
          testMap.put("foo", 2);
          testMap.put("bar", 3);
          testMap.put("baz", 5);
          return testMap;
      }
  
      @Test
      public void testContains() {
          Map<String, Integer> underlying = createTestMap();
          TranslatedValueMapView<String, String, Integer> view =
              new TranslatedValueMapView<>(underlying, v -> v.toString());
          assertTrue(view.containsKey("foo"));
          assertTrue(view.containsKey("bar"));
          assertTrue(view.containsKey("baz"));
          assertFalse(view.containsKey("quux"));
          underlying.put("quux", 101);
          assertTrue(view.containsKey("quux"));
      }
  
      @Test
      public void testIsEmptyAndSize() {
          Map<String, Integer> underlying = new HashMap<>();
          TranslatedValueMapView<String, String, Integer> view =
              new TranslatedValueMapView<>(underlying, v -> v.toString());
          assertTrue(view.isEmpty());
          assertEquals(0, view.size());
          underlying.put("quux", 101);
          assertFalse(view.isEmpty());
          assertEquals(1, view.size());
      }
  
      @Test
      public void testGet() {
          Map<String, Integer> underlying = createTestMap();
          TranslatedValueMapView<String, String, Integer> view =
              new TranslatedValueMapView<>(underlying, v -> v.toString());
          assertEquals("2", view.get("foo"));
          assertEquals("3", view.get("bar"));
          assertEquals("5", view.get("baz"));
          assertNull(view.get("quux"));
          underlying.put("quux", 101);
          assertEquals("101", view.get("quux"));
      }
  
      @Test
      public void testEntrySet() {
          Map<String, Integer> underlying = createTestMap();
          TranslatedValueMapView<String, String, Integer> view =
              new TranslatedValueMapView<>(underlying, v -> v.toString());
          assertEquals(3, view.entrySet().size());
          assertFalse(view.entrySet().isEmpty());
          assertTrue(view.entrySet().contains(new SimpleImmutableEntry<>("foo", "2")));
          assertFalse(view.entrySet().contains(new SimpleImmutableEntry<>("bar", "4")));
      }
  
      @Test
      public void testEntrySetIterator() {
          Map<String, Integer> underlying = createTestMap();
          TranslatedValueMapView<String, String, Integer> view =
              new TranslatedValueMapView<>(underlying, v -> v.toString());
          Iterator<Entry<String, String>> iterator = view.entrySet().iterator();
          assertTrue(iterator.hasNext());
          assertEquals(new SimpleImmutableEntry<>("bar", "3"), iterator.next());
          assertTrue(iterator.hasNext());
          assertEquals(new SimpleImmutableEntry<>("baz", "5"), iterator.next());
          assertTrue(iterator.hasNext());
          assertEquals(new SimpleImmutableEntry<>("foo", "2"), iterator.next());
          assertFalse(iterator.hasNext());
      }
  }
  