assertThrows(
          UnsupportedOperationException.class,
          () -> testInstance.putAll(ImmutableTable.of('a', 1, "blah")));
    }
  }

  public final void testRemove() {
    for (Table<Character, Integer, String> testInstance : getTestInstances()) {
      assertThrows(UnsupportedOperationException.class, () -> testInstance.remove('a', 1));
    }
  }

/**
 * Tests for UnmodifiableListIterator.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@NullMarked
public class UnmodifiableListIteratorTest extends TestCase {
  @SuppressWarnings("DoNotCall")
  public void testRemove() {
    Iterator<String> iterator = create();

    assertTrue(iterator.hasNext());
    assertThat(iterator.next()).isEqualTo("a");
    assertThrows(UnsupportedOperationException.class, () -> iterator.remove());
  }

/**
 * Tests for UnmodifiableListIterator.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@NullMarked
public class UnmodifiableListIteratorTest extends TestCase {
  @SuppressWarnings("DoNotCall")
  public void testRemove() {
    Iterator<String> iterator = create();

    assertTrue(iterator.hasNext());
    assertThat(iterator.next()).isEqualTo("a");
    assertThrows(UnsupportedOperationException.class, () -> iterator.remove());
  }

    assertEquals(Integer.valueOf(1), map.get("foo"));
    assertThat(map.putIfAbsent("bar", 3)).isNull();
    assertEquals(Integer.valueOf(3), map.get("bar"));
  }

  public void testRemove() {
    TestMap map = new TestMap();
    map.put("foo", 1);
    assertFalse(map.remove("foo", 2));
    assertFalse(map.remove("bar", 1));
    assertEquals(Integer.valueOf(1), map.get("foo"));

/**
 * Tests for {@link UnmodifiableIterator}.
 *
 * @author Jared Levy
 */
@GwtCompatible
@NullMarked
public class UnmodifiableIteratorTest extends TestCase {

  @SuppressWarnings("DoNotCall")
  public void testRemove() {
    String[] array = {"a", "b", "c"};

    Iterator<String> iterator =
        new UnmodifiableIterator<String>() {
          int i;

          @Override
          public boolean hasNext() {

   */

  public void testSize() {
    int unused = create().size();
  }

  public void testIsEmpty() {
    boolean unused = create().isEmpty();
  }

  public void testRemove() {
    create().remove(null);
  }

  public void testClear() {
    create().clear();
  }

  public void testContainsKey() {
    boolean unused = create().containsKey(null);
  }

    assertEquals((Character) 'c', table.get("foo", 3));
    assertEquals((Character) 'e', table.get("bar", 2));
    assertEquals((Character) 'f', table.get("cat", 2));
    assertSize(5);
  }

  public void testRemove() {
    table = create("foo", 1, 'a', "bar", 1, 'b', "foo", 3, 'c');
    if (supportsRemove()) {
      assertThat(table.remove("cat", 1)).isNull();
      assertThat(table.remove("bar", 3)).isNull();

    assertEquals((Character) 'c', table.get("foo", 3));
    assertEquals((Character) 'e', table.get("bar", 2));
    assertEquals((Character) 'f', table.get("cat", 2));
    assertSize(5);
  }

  public void testRemove() {
    table = create("foo", 1, 'a', "bar", 1, 'b', "foo", 3, 'c');
    if (supportsRemove()) {
      assertThat(table.remove("cat", 1)).isNull();
      assertThat(table.remove("bar", 3)).isNull();

   */

  public void testSize() {
    int unused = create().size();
  }

  public void testIsEmpty() {
    boolean unused = create().isEmpty();
  }

  public void testRemove() {
    create().remove(null);
  }

  public void testClear() {
    create().clear();
  }

  public void testContainsKey() {
    boolean unused = create().containsKey(null);
  }

    assertEquals(3, (int) mmHeap.poll());
    assertThat(mmHeap.peekLast()).isNull();
    assertThat(mmHeap.peek()).isNull();
    assertThat(mmHeap.poll()).isNull();
  }

  public void testRemove() {
    MinMaxPriorityQueue<Integer> mmHeap = MinMaxPriorityQueue.create();
    mmHeap.addAll(Lists.newArrayList(1, 2, 3, 4, 47, 1, 5, 3, 0));
    assertTrue("Heap is not intact initially", mmHeap.isIntact());