return nil
	}); err == nil {
		t.Errorf("should returns error when commit with closed conn, got error %v", err)
	}

	if err := DB.Session(&gorm.Session{PrepareStmt: true}).Transaction(func(tx *gorm.DB) error {
		return nil
	}); err == nil {
		t.Errorf("should returns error when commit with closed conn, got error %v", err)
	}
}

func TestTransactionWithHooks(t *testing.T) {

	return err.Error() == "sql: statement is closed"
}

// TestPreparedStmtConcurrentClose test calling close and executing SQL concurrently
// this test making sure that the gorm would not get a Segmentation Fault, and the only error cause by this is using a closed Stmt
func TestPreparedStmtConcurrentClose(t *testing.T) {
	name := "prepared_stmt_concurrent_close"

    public synchronized int read(final byte[] b) throws IOException {
        return read(b, 0, b.length);
    }

    /* This method will not return until len bytes have been read
     * or the stream has been closed.
     */

    @Override
    public synchronized int read(final byte[] b, int off, int len) throws IOException {
        if (len == 0) {
            return 0;
        }
        int tot = 0;

     * Named pipe status indicating the connection is established and operational.
     */
    public static final int STATUS_CONNECTION_OK = 3;

    /**
     * Named pipe status indicating the server end of the pipe is closed.
     */
    public static final int STATUS_SERVER_END_CLOSED = 4;

    private int available;

    /**
     * Constructs a TransPeekNamedPipeResponse with the specified configuration.
     *

          }
        }
      }

      assertThat(call.canceled).isTrue()
      assertThat(call.responseClosed).isTrue()
    }
  }

  /** A call that keeps track of whether its response body is closed. */
  private class ClosableCall : FailingCall() {
    private val response =
      Response
        .Builder()
        .request(Request("https://example.com/".toHttpUrl()))
        .protocol(Protocol.HTTP_1_1)

     *
     * @param config
     *            The configuration to use
     * @param fileId
     *            The file ID to close
     * @param fileName
     *            The name of the file being closed
     */
    public Smb2CloseRequest(final Configuration config, final byte[] fileId, final String fileName) {
        super(config, SMB2_CLOSE);
        this.fileId = fileId;
        this.fileName = fileName;
    }

            throws IOException;

    /**
     * Calculates checksums for specified stream. Upon this method returns, the stream will be depleted (fully read)
     * but not closed.
     *
     * @param stream      The stream for which to calculate checksums, must not be {@code null}.
     * @param algorithms  The checksum algorithms to use, must not be {@code null}.

	IsLocal() bool

	// Returns hostname if disk is remote.
	Hostname() string

	// Returns the entire endpoint.
	Endpoint() Endpoint

	// Close the disk, mark it purposefully closed, only implemented for remote disks.
	Close() error

	// Returns the unique 'uuid' of this disk.
	GetDiskID() (string, error)

	// Set a unique 'uuid' for this disk, only used when
	// disk is replaced and formatted.

            // Before blocking, confirm that the stream we're writing is still open. It's possible
            // that the stream has since been closed (such as if this write timed out.)
            if (!streams.containsKey(streamId)) {
              throw IOException("stream closed")
            }
            wait() // Wait until we receive a WINDOW_UPDATE.
          }
        } catch (e: InterruptedException) {

        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

    /**
     * Reads text from the given {@link Reader}.
     * <p>
     * The {@link Reader} is not closed by this method.
     * </p>
     *
     * @param reader
     *            the character input stream to read from (must not be {@literal null})
     * @return the text read from the reader
     */