// Enqueue more than enough tasks to force reentrancy.
    for (int i = 0; i < 5; i++) {
      results.add(serializer.submit(Callables.returning(null), directExecutor()));
    }

    manualExecutorTask[0].run();

    for (Future<?> result : results) {
      if (!result.isCancelled()) {
        result.get(10, SECONDS);
      }
      // TODO(cpovirk): Verify that the cancelled futures are exactly ones that we expect.

  @Override
  public int compareTo(Cut<C> that) {
    if (that == belowAll()) {
      return 1;
    }
    if (that == aboveAll()) {
      return -1;
    }
    int result = Range.compareOrThrow(endpoint, that.endpoint);
    if (result != 0) {
      return result;
    }
    // same value. below comes before above
    return Boolean.compare(this instanceof AboveValue, that instanceof AboveValue);
  }

  C endpoint() {

      return inline.submit(task);
    }

    @Override
    public <T> Future<T> submit(Runnable task, T result) {
      lastMethodCalled = "submit";
      assertThat(task).isInstanceOf(WrappedRunnable.class);
      return inline.submit(task, result);
    }

    @Override
    public void execute(Runnable command) {
      lastMethodCalled = "execute";

    /**
     * @return whether the context is established
     */
    boolean isEstablished ();


    /**
     * @param token
     * @param off
     * @param len
     * @return result token
     * @throws SmbException
     * @throws CIFSException
     */
    byte[] initSecContext ( byte[] token, int off, int len ) throws CIFSException;


    /**
     * @return the name of the remote endpoint

}

// ConnPool db conns pool interface
type ConnPool interface {
	PrepareContext(ctx context.Context, query string) (*sql.Stmt, error)
	ExecContext(ctx context.Context, query string, args ...interface{}) (sql.Result, error)
	QueryContext(ctx context.Context, query string, args ...interface{}) (*sql.Rows, error)
	QueryRowContext(ctx context.Context, query string, args ...interface{}) *sql.Row
}

import java.io.Serializable;
import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * An ordering that orders elements by applying an order to the result of a function on those
 * elements.
 */
@GwtCompatible(serializable = true)
@ElementTypesAreNonnullByDefault
final class ByFunctionOrdering<F extends @Nullable Object, T extends @Nullable Object>

        ArtifactFilter dependencyFilter = new ScopeArtifactFilter( Artifact.SCOPE_COMPILE );

        MavenProject project = new MavenProject( new Model() );

        Set<Artifact> result = project.createArtifacts( dependencyFilter );

        for (Iterator<Artifact> it = result.iterator(); it.hasNext(); )
        {
            Artifact artifact = it.next();

            if ( "test-artifact2".equals( artifact.getArtifactId() ) )
            {

            // The compiler would know this is safe if not for our use of raw types (see above).
            @SuppressWarnings("unchecked")
            E result = (E) canonical;
            return result;
          }
        }

        // didn't see it, trying to put it instead...
        Dummy sneaky = map.putIfAbsent(sample, Dummy.VALUE);
        if (sneaky == null) {

	for i, tt := range metaCacheTestset {
		t.Run(tt.id, func(t *testing.T) {
			var want bool
			if i >= len(wantResults) {
				t.Logf("no expected result for test #%d", i)
			} else {
				want = wantResults[i]
			}

			got := tt.finished()
			if got != want {
				t.Errorf("#%d: want %v, got %v", i, want, got)
			}
		})
	}
}

}

// TODO(vnvo2409): Add more tests from `python/ops/gradient_checker_v2_test.py`.
// These tests should not be confused with `[*]_grad_test` which compare the
// result of `gradient_checker` and `[*]_grad`. The tests here test the
// functionality of `gradient_checker` by comparing the result with expected
// manual user-provided gradients.
class GradientCheckerTest
    : public ::testing::TestWithParam<std::tuple<const char*, bool, bool>> {
 protected: