// since the operation would be a no-op, the exception is not required
    }
    expectUnchanged();
  }

  @MapFeature.Require(value = SUPPORTS_REMOVE, absent = ALLOWS_NULL_VALUE_QUERIES)
  public void testRemove_nullValueQueriesUnsupported() {
    try {
      assertFalse(getMap().remove(k3(), null));
    } catch (NullPointerException tolerated) {
      // since the operation would be a no-op, the exception is not required
    }

 * serialization tests require more setup. This no-op behavior allows test authors to intersperse
 * {@code SerializableTester} calls with other, GWT-compatible tests.
 *
 * @author Mike Bostock
 * @since 10.0
 */
@GwtCompatible // but no-op!
@NullMarked
public final class SerializableTester {
  private SerializableTester() {}

  /**

var _Op_index = [...]uint8{0, 7, 22, 26, 30, 40, 55, 74, 93, 105, 117, 130, 142, 148, 155, 163, 173, 179}

func (i Op) String() string {
	i -= 1
	if i >= Op(len(_Op_index)-1) {
		return "Op(" + strconv.FormatInt(int64(i+1), 10) + ")"
	}
	return _Op_name[_Op_index[i]:_Op_index[i+1]]

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

package sql

import "time"

func timestampCompare(op string, left, right time.Time) bool {
	switch op {
	case opLt:
		return left.Before(right)
	case opLte:
		return left.Before(right) || left.Equal(right)
	case opGt:
		return left.After(right)
	case opGte:

func (m *muxClient) roundtrip(h HandlerID, req []byte) ([]byte, error) {
	if m.init {
		return nil, errors.New("mux client already used")
	}
	m.init = true
	m.singleResp = true
	msg := message{
		Op:         OpRequest,
		MuxID:      m.MuxID,
		Handler:    h,
		Flags:      m.BaseFlags | FlagEOF,
		Payload:    req,
		DeadlineMS: uint32(m.deadline.Milliseconds()),
	}
	if m.subroute != nil {

	var r T
	base := s.c.g.apply(ctx).Model(r)

	switch op.Type {
	case clause.OpCreate:
		return s.handleAssociationCreate(ctx, base, op)
	case clause.OpUnlink, clause.OpDelete, clause.OpUpdate:
		return s.handleAssociation(ctx, base, op)
	default:
		return fmt.Errorf("unknown association operation type: %v", op.Type)
	}
}

	tierPut
	tierDelete
)

func (op tierOp) String() string {
	switch op {
	case tierGet:
		return "GET"
	case tierPut:
		return "PUT"
	case tierDelete:
		return "DELETE"
	}
	return "UNKNOWN"
}

type tierPermErr struct {
	Op  tierOp
	Err error
}

func (te tierPermErr) Error() string {
	return fmt.Sprintf("failed to perform %s: %v", te.Op, te.Err)
}

  public void testOrdering() {
    List<Integer> callOrder = new ArrayList<>();

    class FakeOp implements Runnable {
      final int op;

      FakeOp(int op) {
        this.op = op;
      }

      @Override
      public void run() {
        callOrder.add(op);
      }
    }

    e.execute(new FakeOp(0));
    e.execute(new FakeOp(1));
    e.execute(new FakeOp(2));
    fakePool.runAll();

		name   string
		err    error
		target any
		want   bool
	}{
		{
			name:   "url.Error",
			err:    &url.Error{Op: "PUT", URL: "http://localhost/1234", Err: restError("remote server offline")},
			target: &url.Error{},
			want:   true,
		},
		{
			name: "net.Error",
			err:  &url.Error{Op: "PUT", URL: "http://localhost/1234", Err: restError("remote server offline")},
			want: true,
		},
		{

	}
	// R1 op R2 or r1 op constant.
	// op is:
	//	"<<" == 0
	//	">>" == 1
	//	"->" == 2
	//	"@>" == 3
	r1, ok := p.registerReference(name)
	if !ok {
		return 0
	}
	var op int16
	switch p.next().ScanToken {
	case lex.LSH:
		op = 0
	case lex.RSH:
		op = 1
	case lex.ARR:
		op = 2
	case lex.ROT: