return (n & 1) == 0; // isEven()
              }
            }));
    assertEquals(newArrayList("1", "3", "5"), list);
    assertFalse(
        removeIf(
            transformed,
            new Predicate<Integer>() {
              @Override
              public boolean apply(Integer n) {
                return (n & 1) == 0; // isEven()
              }
            }));

    assertEquals(expected, actual);
  }

  @GwtIncompatible // unreasonably slow
  public void testFilterUsingIteratorTester() {
    List<Integer> list = asList(1, 2, 3, 4, 5);
    Predicate<Integer> isEven =
        new Predicate<Integer>() {
          @Override
          public boolean apply(Integer integer) {
            return integer % 2 == 0;
          }
        };
    new IteratorTester<Integer>(

    assertEquals(expected, actual);
  }

  @GwtIncompatible // unreasonably slow
  public void testFilterUsingIteratorTester() {
    List<Integer> list = asList(1, 2, 3, 4, 5);
    Predicate<Integer> isEven =
        new Predicate<Integer>() {
          @Override
          public boolean apply(Integer integer) {
            return integer % 2 == 0;
          }
        };
    new IteratorTester<Integer>(

            "four", 4,
            "five", 5,
            "six", 6,
            "seven", 7),
        "one",
        1,
        "two",
        2,
        "three",
        3,
        "four",
        4,
        "five",
        5,
        "six",
        6,
        "seven",
        7);
    assertMapEquals(
        ImmutableBiMap.of(
            "one", 1,

            "one", 1,
            "two", 2,
            "three", 3,
            "four", 4,
            "five", 5,
            "six", 6,
            "seven", 7),
        "five",
        5,
        "four",
        4,
        "one",
        1,
        "seven",
        7,
        "six",
        6,
        "three",
        3,
        "two",
        2);
    assertMapEquals(

  // For example: (long) data[i++] | (long) data[i++] << 8 | ...
  // If data[i] == (byte) 0x80, the first cast will sign-extend it to 0xffffffffffffff80,
  // masking the remaining seven bytes.
  // To test this, we give an input where bit 7 is not cleared. For example:
  // (1) 00 01 02 03 04 05 06 07 80
  // (2) 00 01 02 03 04 05 06 07 81
  // (3) 00 01 02 03 04 05 06 07 ff (or anything in between)

  // For example: (long) data[i++] | (long) data[i++] << 8 | ...
  // If data[i] == (byte) 0x80, the first cast will sign-extend it to 0xffffffffffffff80,
  // masking the remaining seven bytes.
  // To test this, we give an input where bit 7 is not cleared. For example:
  // (1) 00 01 02 03 04 05 06 07 80
  // (2) 00 01 02 03 04 05 06 07 81
  // (3) 00 01 02 03 04 05 06 07 ff (or anything in between)

import java.util.concurrent.ExecutorService;
import org.jspecify.annotations.NullUnmarked;
import org.jspecify.annotations.Nullable;

/**
 * Used to test listenable future implementations.
 *
 * @author Sven Mawson
 */
@NullUnmarked
@GwtIncompatible
@J2ktIncompatible
public class ListenableFutureTester {

  private final ExecutorService exec;
  private final ListenableFuture<?> future;

import java.util.concurrent.ExecutorService;
import org.jspecify.annotations.NullUnmarked;
import org.jspecify.annotations.Nullable;

/**
 * Used to test listenable future implementations.
 *
 * @author Sven Mawson
 */
@NullUnmarked
@GwtIncompatible
@J2ktIncompatible
public class ListenableFutureTester {

  private final ExecutorService exec;
  private final ListenableFuture<?> future;

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