* };
 * x = null; // Hint to the JIT that x is stack-unreachable
 * GcFinalization.await(latch);
 * }
 *
 * <p>Here's an example that uses a user-defined finalization predicate:
 *
 * {@snippet :
 * final WeakHashMap<Object, Object> map = new WeakHashMap<>();
 * map.put(new Object(), Boolean.TRUE);
 * GcFinalization.awaitDone(new FinalizationPredicate() {
 *   public boolean isDone() {
 *     return map.isEmpty();

          }
        };
    unused = null; // Hint to the JIT that unused is unreachable
    GcFinalization.awaitDone(future);
    assertTrue(future.isDone());
    assertTrue(future.isCancelled());
  }

  public void testAwaitClear() {
    WeakReference<Object> ref = createWeakReference();
    GcFinalization.awaitClear(ref);
    assertThat(ref.get()).isNull();
  }

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.base.internal.Finalizer;
import com.google.common.collect.Sets;
import com.google.common.testing.GcFinalization;
import java.io.Closeable;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.lang.ref.Cleaner;
import java.lang.ref.Cleaner.Cleanable;
import java.lang.ref.Reference;

import com.google.common.base.Function;
import com.google.common.collect.Interners.InternerImpl;
import com.google.common.collect.MapMakerInternalMap.Strength;
import com.google.common.testing.GcFinalization;
import com.google.common.testing.NullPointerTester;
import java.lang.ref.WeakReference;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit test for {@link Interners}.

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.collect.ImmutableList;
import com.google.common.testing.GcFinalization;
import java.io.File;
import java.lang.ref.WeakReference;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.net.MalformedURLException;
import java.net.URL;

import com.google.common.annotations.J2ktIncompatible;
import com.google.common.base.TestExceptions.SomeCheckedException;
import com.google.common.base.TestExceptions.SomeUncheckedException;
import com.google.common.testing.GcFinalization;
import java.lang.ref.WeakReference;
import java.util.Iterator;
import java.util.NoSuchElementException;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.util.concurrent;

import static com.google.common.testing.GcFinalization.awaitClear;
import static com.google.common.truth.Truth.assertThat;
import static com.google.common.util.concurrent.MoreExecutors.directExecutor;

import com.google.common.annotations.GwtIncompatible;

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.util.concurrent;

import static com.google.common.testing.GcFinalization.awaitClear;
import static com.google.common.truth.Truth.assertThat;
import static com.google.common.util.concurrent.MoreExecutors.directExecutor;

import com.google.common.annotations.GwtIncompatible;

import com.google.common.annotations.J2ktIncompatible;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.common.testing.GcFinalization;
import com.google.common.testing.NullPointerTester;
import com.google.common.testing.SerializableTester;
import java.io.File;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;

import static org.junit.Assert.assertThrows;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.testing.GcFinalization;
import com.google.common.util.concurrent.FuturesGetCheckedInputs.ExceptionWithBadConstructor;
import com.google.common.util.concurrent.FuturesGetCheckedInputs.ExceptionWithGoodAndBadConstructor;