import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/** Test for {@link ListenableFuture}. */
@NullUnmarked
public class ListenableFutureTest extends TestCase {
  public void testNoNewApis() throws Exception {
    assertWithMessage(
            "Do not add new methods to ListenableFuture. Its API needs to continue to match the"