// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public class CollectionEqualsTester<E> extends AbstractCollectionTester<E> {

  @SuppressWarnings({
    "SelfEquals", // TODO(cpovirk): Consider using EqualsTester from Guava.
    "UndefinedEquals", // Comparisons of an object to itself *are* defined.
  })

        .testEquals();
  }

  @SuppressWarnings("unchecked") // proxy of List<String>
  private static List<String> newDelegatingList(List<String> delegate) {
    return Reflection.newProxy(List.class, new DelegatingInvocationHandler(delegate));
  }

  @SuppressWarnings("unchecked") // proxy of List<String>

import java.util.Collection;
import org.jspecify.annotations.Nullable;

/**
 * An implementation of {@link ContiguousSet} that contains one or more elements.
 *
 * @author Gregory Kick
 */
@GwtCompatible
@SuppressWarnings("rawtypes") // https://github.com/google/guava/issues/989
final class RegularContiguousSet<C extends Comparable> extends ContiguousSet<C> {
  private final Range<C> range;

  public void testPadEnd_negativeMinLength() {
    assertThat(Strings.padEnd("x", -1, '-')).isSameInstanceAs("x");
  }

  @SuppressWarnings("nullness") // test of a bogus call
  public void testPadEnd_null() {
    assertThrows(NullPointerException.class, () -> Strings.padEnd(null, 5, '0'));
  }

  @SuppressWarnings("InlineMeInliner") // test of method that doesn't just delegate
  public void testRepeat() {
    String input = "20";

    return new WeakReference<>(
        new Object() {
          @SuppressWarnings({"removal", "Finalize"}) // b/487687332
          @Override
          protected void finalize() {
            finalizerRan.countDown();
          }
        });
  }

  // We call the method only after checking that it's present.
  @IgnoreJRERequirement
  @SuppressWarnings({
    "Java8ApiChecker",

import org.jspecify.annotations.Nullable;

/**
 * Implementation of {@link ImmutableSet} with two or more elements.
 *
 * @author Kevin Bourrillion
 */
@GwtCompatible
@SuppressWarnings("serial") // uses writeReplace(), not default serialization
final class RegularImmutableSet<E> extends ImmutableSet<E> {
  private static final Object[] EMPTY_ARRAY = new Object[0];

                  // Other tests will verify what real, warning-free usage looks like
                  // but here we have to do some serious fudging
                  @Override
                  @SuppressWarnings({"unchecked", "rawtypes"})
                  public Map<TypeToken, Object> create(Object... elements) {
                    MutableTypeToInstanceMap<Object> map = new MutableTypeToInstanceMap<>();

 *
 * @author Kevin Bourrillion
 */
@GwtCompatible
@SuppressWarnings({
  "deprecation", // tests of numerous deprecated methods
  "nullness", // TODO(cpovirk): fix errors
})
@NullUnmarked
public class ThrowablesTest extends TestCase {
  // We're testing that the method is in fact equivalent to throwing the exception directly.
  @SuppressWarnings("ThrowIfUncheckedKnownUnchecked")
  public void testThrowIfUnchecked_unchecked() {

           * requireNonNull is safe because the first `2*(size+keyOffset)` elements have been filled
           * in.
           */
          @SuppressWarnings("unchecked")
          K key = (K) requireNonNull(alternatingKeysAndValues[2 * index + keyOffset]);
          @SuppressWarnings("unchecked")
          V value = (V) requireNonNull(alternatingKeysAndValues[2 * index + (keyOffset ^ 1)]);

  @Override
  @SuppressWarnings("unchecked") // TODO(kevinb): the right way to explain this??
  public int compare(Comparable<?> left, Comparable<?> right) {
    checkNotNull(left); // for GWT
    checkNotNull(right);
    return ((Comparable<Object>) left).compareTo(right);
  }

  @Override
  @SuppressWarnings("unchecked") // TODO(kevinb): the right way to explain this??