.get());
    assertEquals(
        Integer.valueOf(5),
        reserialize(Suppliers.synchronizedSupplier(Suppliers.ofInstance(5))).get());
  }

  @J2ktIncompatible
  @GwtIncompatible // reflection
  @SuppressWarnings("Java7ApiChecker") // includes test of Java 8+ API
  public void testSuppliersNullChecks() throws Exception {
    new ClassSanityTester()
        .setDefault(Duration.class, Duration.ofSeconds(1))

   * the other. Thus, we say the bug is in set(), which fails to support null.
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method getSetNullSupportedMethod() {
    return Helpers.getMethod(ListSetTester.class, "testSet_null");
  }

   * can suppress it. See {@link CollectionAddTester#getAddNullSupportedMethod()} for details.
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method getAddNullSupportedMethod() {
    return Helpers.getMethod(ListAddAtIndexTester.class, "testAddAtIndex_nullSupported");
  }

import com.google.common.collect.Sets;
import com.google.common.primitives.Ints;
import com.google.common.reflect.Invokable;
import com.google.common.reflect.Parameter;
import com.google.common.reflect.Reflection;
import com.google.common.reflect.TypeToken;
import com.google.common.testing.NullPointerTester.Visibility;
import com.google.common.testing.RelationshipTester.Item;

  @GwtIncompatible // serialize
  public void testSerializable() {
    SerializableTester.reserializeAndAssert(EnumHashBiMap.create(Currency.class));
  }

  @J2ktIncompatible
  @GwtIncompatible // reflection
  public void testNulls() {
    new NullPointerTester().testAllPublicStaticMethods(EnumHashBiMap.class);
    new NullPointerTester().testAllPublicInstanceMethods(EnumHashBiMap.create(Currency.class));
  }

  }

  /**
   * Provides a lexicographical comparator implementation; either a Java implementation or a faster
   * implementation based on {@link Unsafe}.
   *
   * <p>Uses reflection to gracefully fall back to the Java implementation if {@code Unsafe} isn't
   * available.
   */
  @VisibleForTesting
  static class LexicographicalComparatorHolder {
    static final String UNSAFE_COMPARATOR_NAME =

    /*
     * We'd use assertThrows here, but that causes no exception to be thrown under Java 8,
     * presumably because the ThrowingRunnable lambda triggers some kind of bug in Java 8's
     * reflection implementation.
     */
    try {
      new TypeToken<T>() {};
      fail();
    } catch (IllegalStateException expected) {
    }
  }

  public void testRawTypeIsCorrect() {

   * FeatureSpecificTestSuiteBuilder.suppressing()} until <a
   * href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5045147">Sun bug 5045147</a> is fixed.
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method getPutNullKeyUnsupportedMethod() {
    return Helpers.getMethod(MapPutTester.class, "testPut_nullKeyUnsupported");
  }

  public void testSerializable() {
    SerializableTester.reserializeAndAssert(
        EnumBiMap.create(ImmutableMap.of(Currency.DOLLAR, Country.CANADA)));
  }

  @J2ktIncompatible
  @GwtIncompatible // reflection
  public void testNulls() {
    new NullPointerTester().testAllPublicStaticMethods(EnumBiMap.class);
    new NullPointerTester()
        .testAllPublicInstanceMethods(

@GwtCompatible(emulated = true)
@ReflectionSupport(value = ReflectionSupport.Level.FULL)
@ElementTypesAreNonnullByDefault
// Some Android 5.0.x Samsung devices have bugs in JDK reflection APIs that cause
// getDeclaredField to throw a NoSuchFieldException when the field is definitely there.
// Since this class only needs CAS on one field, we can avoid this bug by extending AtomicReference