/*
 *
 * MariaDB Client for Java
 *
 * Copyright (c) 2012-2014 Monty Program Ab.
 * Copyright (c) 2015-2020 MariaDB Corporation Ab.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along
 * with this library; if not, write to Monty Program Ab info@montyprogram.com.
 *
 * This particular MariaDB Client for Java file is work
 * derived from a Drizzle-JDBC. Drizzle-JDBC file which is covered by subject to
 * the following copyright and notice provisions:
 *
 * Copyright (c) 2009-2011, Marcus Eriksson
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright notice, this list
 * of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice, this
 * list of conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.
 *
 * Neither the name of the driver nor the names of its contributors may not be
 * used to endorse or promote products derived from this software without specific
 * prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS  AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 *
 */

package org.mariadb.jdbc;

import static org.junit.Assert.*;

import java.io.ByteArrayInputStream;
import java.nio.charset.StandardCharsets;
import java.sql.*;
import java.util.Properties;
import org.junit.Assume;
import org.junit.BeforeClass;
import org.junit.Test;

public class StatementTest extends BaseTest {

  private static final int ER_BAD_FIELD_ERROR = 1054;
  private static final int ER_NON_INSERTABLE_TABLE = 1471;
  private static final int ER_NO_SUCH_TABLE = 1146;
  private static final int ER_CMD_NOT_PERMIT = 1148;
  private static final int ER_NONUPDATEABLE_COLUMN = 1348;
  private static final int ER_PARSE_ERROR = 1064;
  private static final int ER_NO_PARTITION_FOR_GIVEN_VALUE = 1526;
  private static final int ER_LOAD_DATA_INVALID_COLUMN = 1611;
  private static final int ER_ADD_PARTITION_NO_NEW_PARTITION = 1514;
  private static final String ER_BAD_FIELD_ERROR_STATE = "42S22";
  private static final String ER_NON_INSERTABLE_TABLE_STATE = "HY000";
  private static final String ER_NO_SUCH_TABLE_STATE = "42S02";
  private static final String ER_NONUPDATEABLE_COLUMN_STATE = "HY000";
  private static final String ER_PARSE_ERROR_STATE = "42000";
  private static final String ER_NO_PARTITION_FOR_GIVEN_VALUE_STATE = "HY000";
  private static final String ER_LOAD_DATA_INVALID_COLUMN_STATE = "HY000";
  private static final String ER_ADD_PARTITION_NO_NEW_PARTITION_STATE = "HY000";

  /**
   * Initializing tables.
   *
   * @throws SQLException exception
   */
  @BeforeClass()
  public static void initClass() throws SQLException {
    createTable("vendor_code_test", "id int not null primary key auto_increment, test boolean");
    createTable("vendor_code_test2", "a INT", "PARTITION BY KEY (a) (PARTITION x0, PARTITION x1)");
    createTable("vendor_code_test3", "a INT", "PARTITION BY LIST(a) (PARTITION p0 VALUES IN (1))");
    createTable("StatementTestt1", "c1 INT, c2 VARCHAR(255)");
  }

  @Test
  public void wrapperTest() throws SQLException {
    try (Statement statement = sharedConnection.createStatement()) {
      assertTrue(statement.isWrapperFor(Statement.class));
      assertFalse(statement.isWrapperFor(SQLException.class));
      assertEquals(statement.unwrap(Statement.class).getClass(), statement.getClass());
      try {
        statement.unwrap(SQLException.class);
        fail("MariaDbStatement class unwrapped as SQLException class");
      } catch (SQLException sqle) {
        // normal exception
      } catch (Exception e) {
        fail();
      }
    }
  }

  /**
   * Conj-90.
   *
   * @throws SQLException exception
   */
  @Test
  public void reexecuteStatementTest() throws SQLException {
    try (Connection connection = setConnection("&allowMultiQueries=true")) {
      try (PreparedStatement stmt = connection.prepareStatement("SELECT 1")) {
        stmt.setFetchSize(Integer.MIN_VALUE);
        ResultSet rs = stmt.executeQuery();
        assertTrue(rs.next());
        stmt.executeQuery();
      }
    }
  }

  @Test(expected = SQLException.class)
  public void afterConnectionClosedTest() throws SQLException {
    Connection conn2 = DriverManager.getConnection("jdbc:mariadb://localhost:3306/test?user=root");
    Statement st1 = conn2.createStatement();
    st1.close();
    conn2.close();
    Statement st2 = conn2.createStatement();
    fail();
    st2.close();
  }

  @Test
  public void testColumnsDoNotExist() {

    try {
      sharedConnection
          .createStatement()
          .executeQuery(
              "select * from vendor_code_test where crazy_column_that_does_not_exist = 1");
      fail("The above statement should result in an exception");
    } catch (SQLException sqlException) {
      assertEquals(ER_BAD_FIELD_ERROR, sqlException.getErrorCode());
      assertEquals(ER_BAD_FIELD_ERROR_STATE, sqlException.getSQLState());
    }
  }

  @Test
  public void testNonInsertableTable() throws SQLException {
    Statement statement = sharedConnection.createStatement();
    statement.execute(
        "create or replace view vendor_code_test_view as select id as id1, id as id2, test "
            + "from vendor_code_test");

    try {
      statement.executeQuery("insert into vendor_code_test_view VALUES (null, null, true)");
      fail("The above statement should result in an exception");
    } catch (SQLException sqlException) {
      assertEquals(ER_NON_INSERTABLE_TABLE, sqlException.getErrorCode());
      assertEquals(ER_NON_INSERTABLE_TABLE_STATE, sqlException.getSQLState());
    }
  }

  @Test
  public void testNoSuchTable() throws SQLException {
    Statement statement = sharedConnection.createStatement();
    statement.execute("drop table if exists vendor_code_test_");
    try {
      statement.execute("SELECT * FROM vendor_code_test_");
      fail("The above statement should result in an exception");
    } catch (SQLException sqlException) {
      if (sqlException.getErrorCode() != ER_NO_SUCH_TABLE
          && sqlException.getErrorCode() != ER_CMD_NOT_PERMIT) {
        fail("Wrong error code message");
      }
      assertEquals(ER_NO_SUCH_TABLE_STATE, sqlException.getSQLState());
    }
  }

  @Test
  public void testNoSuchTableBatchUpdate() throws SQLException {
    Statement statement = sharedConnection.createStatement();
    statement.execute("drop table if exists vendor_code_test_");
    statement.addBatch("INSERT INTO vendor_code_test_ VALUES('dummyValue')");
    try {
      statement.executeBatch();
      fail("The above statement should result in an exception");
    } catch (SQLException sqlException) {
      if (sqlException.getErrorCode() != ER_NO_SUCH_TABLE
          && sqlException.getErrorCode() != ER_CMD_NOT_PERMIT) {
        fail("Wrong error code message");
      }
      assertEquals(ER_NO_SUCH_TABLE_STATE, sqlException.getSQLState());
    }
  }

  @Test
  public void testNonUpdateableColumn() throws SQLException {
    Statement statement = sharedConnection.createStatement();
    statement.execute(
        "create or replace view vendor_code_test_view as select *,"
            + " 1 as derived_column_that_does_no_exist from vendor_code_test");

    try {
      statement.executeQuery(
          "UPDATE vendor_code_test_view SET derived_column_that_does_no_exist = 1");
      fail("The above statement should result in an exception");
    } catch (SQLException sqlException) {
      assertEquals(ER_NONUPDATEABLE_COLUMN, sqlException.getErrorCode());
      assertEquals(ER_NONUPDATEABLE_COLUMN_STATE, sqlException.getSQLState());
    }
  }

  @Test
  public void testParseErrorAddPartitionNoNewPartition() throws SQLException {
    Statement statement = sharedConnection.createStatement();
    try {
      statement.execute("totally_not_a_sql_command_this_cannot_be_parsed");
      fail("The above statement should result in an exception");
    } catch (SQLException sqlException) {
      assertEquals(ER_PARSE_ERROR, sqlException.getErrorCode());
      assertEquals(ER_PARSE_ERROR_STATE, sqlException.getSQLState());
    }
  }

  @Test
  public void testAddPartitionNoNewPartition() throws SQLException {
    Statement statement = sharedConnection.createStatement();
    try {
      statement.execute("ALTER TABLE vendor_code_test2 ADD PARTITION PARTITIONS 0");
      fail("The above statement should result in an exception");
    } catch (SQLException sqlException) {
      assertEquals(ER_ADD_PARTITION_NO_NEW_PARTITION, sqlException.getErrorCode());
      assertEquals(ER_ADD_PARTITION_NO_NEW_PARTITION_STATE, sqlException.getSQLState());
    }
  }

  @Test
  public void testNoPartitionForGivenValue() throws SQLException {
    Statement statement = sharedConnection.createStatement();
    statement.execute("INSERT INTO vendor_code_test3 VALUES (1)");
    try {
      statement.execute("INSERT INTO vendor_code_test3 VALUES (2)");
      fail("The above statement should result in an exception");
    } catch (SQLException sqlException) {
      assertEquals(ER_NO_PARTITION_FOR_GIVEN_VALUE, sqlException.getErrorCode());
      assertEquals(ER_NO_PARTITION_FOR_GIVEN_VALUE_STATE, sqlException.getSQLState());
    }
  }

  @Test
  public void testLoadDataInvalidColumn() throws SQLException {
    Assume.assumeFalse(
        (isMariadbServer() && minVersion(10, 4, 0)) || (!isMariadbServer() && minVersion(8, 0, 3)));
    try (Connection connection = setConnection("&allowLocalInfile=true")) {
      Statement statement = connection.createStatement();
      try {
        statement.execute("drop view if exists v2");
      } catch (SQLException e) {
        // if view doesn't exist, and mode throw warning as error
      }
      statement.execute("CREATE VIEW v2 AS SELECT 1 + 2 AS c0, c1, c2 FROM StatementTestt1;");
      try {
        MariaDbStatement mysqlStatement;
        if (statement.isWrapperFor(MariaDbStatement.class)) {
          mysqlStatement = statement.unwrap(MariaDbStatement.class);
        } else {
          throw new SQLException("Mariadb JDBC adaptor must be used");
        }
        try {
          String data = "\"1\", \"string1\"\n" + "\"2\", \"string2\"\n" + "\"3\", \"string3\"\n";
          ByteArrayInputStream loadDataInfileFile =
              new ByteArrayInputStream(data.getBytes(StandardCharsets.UTF_8));
          mysqlStatement.setLocalInfileInputStream(loadDataInfileFile);
          mysqlStatement.executeUpdate(
              "LOAD DATA LOCAL INFILE 'dummyFileName' INTO TABLE v2 "
                  + "FIELDS ESCAPED BY '\\\\' "
                  + "TERMINATED BY ',' "
                  + "ENCLOSED BY '\"'"
                  + "LINES TERMINATED BY '\n' (c0, c2)");
          fail("The above statement should result in an exception");
        } catch (SQLException sqlException) {
          if (sqlException.getErrorCode() != ER_LOAD_DATA_INVALID_COLUMN
              && sqlException.getErrorCode() != ER_NONUPDATEABLE_COLUMN) {
            fail();
          }
          assertEquals(ER_LOAD_DATA_INVALID_COLUMN_STATE, sqlException.getSQLState());

          // otherwise, localInfileInputStream will not be null,
          // which cause false logic in readLocalInfilePacket
          // and test like LocalInfileInputStreamTest#testLocalInfileUnValidInterceptor will fail if
          // run after it
          mysqlStatement.setLocalInfileInputStream(null);
        }
      } finally {
        try {
          statement.execute("drop view if exists v2");
        } catch (SQLException e) {
          // if view doesn't exist, and mode throw warning as error
        }
      }
    }
  }

  @Test(timeout = 10000)
  public void statementClose() throws SQLException {
    Assume.assumeTrue(sharedOptions().socketTimeout == null);
    Properties infos = new Properties();
    infos.put("socketTimeout", 1000);
    infos.put("usePipelineAuth", "false");
    try (Connection connection = createProxyConnection(infos)) {
      Statement statement = connection.createStatement();
      Statement otherStatement = null;
      try {
        otherStatement = connection.createStatement();
        stopProxy();
        otherStatement.execute("SELECT 1");
      } catch (SQLException e) {
        assertTrue(otherStatement != null && otherStatement.isClosed());
        assertTrue(connection.isClosed());
        try {
          statement.execute("SELECT 1");
        } catch (SQLException ee) {
          assertTrue(statement.isClosed());
          assertEquals("must be an SQLState 08000 exception", "08000", ee.getSQLState());
        }
      }
    } finally {
      closeProxy();
    }
  }

  @Test
  public void closeOnCompletion() throws SQLException {
    Statement statement = sharedConnection.createStatement();
    assertFalse(statement.isCloseOnCompletion());
    try (ResultSet rs = statement.executeQuery("SELECT 1")) {
      statement.closeOnCompletion();
      assertTrue(statement.isCloseOnCompletion());
      assertFalse(statement.isClosed());
    }
    assertTrue(statement.isClosed());
  }

  @Test
  public void testFractionalTimeBatch() throws SQLException {
    Assume.assumeTrue(doPrecisionTest);

    createTable("testFractionalTimeBatch", "tt TIMESTAMP(6)");
    Timestamp currTime = new Timestamp(System.currentTimeMillis());
    try (PreparedStatement preparedStatement =
        sharedConnection.prepareStatement("INSERT INTO testFractionalTimeBatch (tt) values (?)")) {
      for (int i = 0; i < 2; i++) {
        preparedStatement.setTimestamp(1, currTime);
        preparedStatement.addBatch();
      }
      preparedStatement.executeBatch();
    }

    try (Statement statement = sharedConnection.createStatement()) {
      try (ResultSet resultSet = statement.executeQuery("SELECT * from testFractionalTimeBatch")) {
        assertTrue(resultSet.next());
        assertEquals(resultSet.getTimestamp(1).getNanos(), currTime.getNanos());
      }
    }
  }

  @Test
  public void testFallbackBatchUpdate() throws SQLException {
    Assume.assumeTrue(doPrecisionTest);

    createTable("testFallbackBatchUpdate", "col int");
    Statement statement = sharedConnection.createStatement();

    // add 100 data
    StringBuilder sb = new StringBuilder("INSERT INTO testFallbackBatchUpdate(col) VALUES (0)");
    for (int i = 1; i < 100; i++) {
      sb.append(",(").append(i).append(")");
    }
    statement.execute(sb.toString());

    try (PreparedStatement preparedStatement =
        sharedConnection.prepareStatement("DELETE FROM testFallbackBatchUpdate WHERE col = ?")) {
      preparedStatement.setInt(1, 10);
      preparedStatement.addBatch();

      preparedStatement.setInt(1, 15);
      preparedStatement.addBatch();

      int[] results = preparedStatement.executeBatch();
      assertEquals(2, results.length);
    }

    // check results
    try (ResultSet rs = statement.executeQuery("SELECT * FROM testFallbackBatchUpdate")) {
      for (int i = 0; i < 100; i++) {
        if (i == 10 || i == 15) {
          continue;
        }
        assertTrue(rs.next());
        assertEquals(i, rs.getInt(1));
      }
      assertFalse(rs.next());
    }
  }

  @Test
  public void testProperBatchUpdate() throws SQLException {
    Assume.assumeTrue(doPrecisionTest);

    createTable("testProperBatchUpdate", "col int, col2 int");
    Statement statement = sharedConnection.createStatement();

    // add 100 data
    StringBuilder sb =
        new StringBuilder("INSERT INTO testProperBatchUpdate(col, col2) VALUES (0,0)");
    for (int i = 1; i < 100; i++) {
      sb.append(",(").append(i).append(",0)");
    }
    statement.execute(sb.toString());

    try (PreparedStatement preparedStatement =
        sharedConnection.prepareStatement(
            "UPDATE testProperBatchUpdate set col2 = ? WHERE col = ? ")) {
      preparedStatement.setInt(1, 10);
      preparedStatement.setInt(2, 10);
      preparedStatement.addBatch();

      preparedStatement.setInt(1, 15);
      preparedStatement.setInt(2, 15);
      preparedStatement.addBatch();

      int[] results = preparedStatement.executeBatch();
      assertEquals(2, results.length);
    }

    // check results
    try (ResultSet rs = statement.executeQuery("SELECT * FROM testProperBatchUpdate")) {
      for (int i = 0; i < 100; i++) {
        assertTrue(rs.next());
        assertEquals(i, rs.getInt(1));
        assertEquals((i == 10 || i == 15) ? i : 0, rs.getInt(2));
      }
      assertFalse(rs.next());
    }
  }

  @Test
  public void deadLockInformation() throws SQLException {
    createTable("deadlock", "a int primary key", "engine=innodb");
    Statement stmt = sharedConnection.createStatement();
    stmt.execute("insert into deadlock(a) values(0), (1)");

    try (Connection conn1 =
        setConnection(
            "&includeInnodbStatusInDeadlockExceptions&includeThreadDumpInDeadlockExceptions")) {

      conn1.setTransactionIsolation(Connection.TRANSACTION_SERIALIZABLE);
      Statement stmt1 = conn1.createStatement();
      try {
        stmt1.execute("SET SESSION idle_transaction_timeout=2");
      } catch (SQLException e) {
        // eat ( for mariadb >= 10.3)
      }
      stmt.execute("start transaction");
      stmt.execute("update deadlock set a = 2 where a <> 0");

      try (Connection conn2 =
          setConnection(
              "&includeInnodbStatusInDeadlockExceptions&includeThreadDumpInDeadlockExceptions")) {

        Statement stmt2 = conn2.createStatement();
        conn2.setTransactionIsolation(Connection.TRANSACTION_SERIALIZABLE);
        try {
          stmt2.execute("SET SESSION idle_transaction_timeout=2, innodb_lock_wait_timeout=2");
        } catch (SQLException e) {
          // eat ( for mariadb >= 10.3)
        }
        stmt2.execute("start transaction");
        try {
          stmt2.execute("update deadlock set a = 3 where a <> 1");
          fail("Must have thrown deadlock exception");
        } catch (SQLException sqle) {
          assertTrue(sqle.getMessage().contains("current threads:"));
          assertTrue(sqle.getMessage().contains("deadlock information"));
        }
      }
    }
  }

  @Test
  public void largeUpdate() throws SQLException {
    createTable(
        "largeUpdate",
        "a int not null primary key auto_increment, t varchar(256)",
        "engine=innodb");
    Statement stmt = sharedConnection.createStatement();

    long updateRes = stmt.executeLargeUpdate("insert into largeUpdate(t) values('a'), ('b')");
    assertEquals(2L, updateRes);
    assertEquals(2L, stmt.getLargeUpdateCount());

    updateRes =
        stmt.executeLargeUpdate(
            "insert into largeUpdate(t) values('c'), ('d')", Statement.RETURN_GENERATED_KEYS);
    assertEquals(2L, updateRes);
    ResultSet rs = stmt.getGeneratedKeys();
    assertEquals(2L, stmt.getLargeUpdateCount());
    assertTrue(rs.next());
    assertEquals(3, rs.getInt(1));

    updateRes =
        stmt.executeLargeUpdate("insert into largeUpdate(t) values('e'), ('f')", new int[] {1});
    assertEquals(2L, updateRes);
    assertEquals(2L, stmt.getLargeUpdateCount());
    rs = stmt.getGeneratedKeys();
    assertTrue(rs.next());
    assertEquals(5, rs.getInt(1));

    updateRes =
        stmt.executeLargeUpdate(
            "insert into largeUpdate(t) values('g'), ('h')", new String[] {"1"});
    assertEquals(2L, updateRes);
    rs = stmt.getGeneratedKeys();
    assertTrue(rs.next());
    assertEquals(7, rs.getInt(1));

    assertEquals(0L, stmt.getLargeMaxRows());
    stmt.setLargeMaxRows(10_000L);
    assertEquals(10_000L, stmt.getLargeMaxRows());
  }

  @Test
  public void closedStatement() throws SQLException {

    Statement stmt = sharedConnection.createStatement();
    stmt.execute("SELECT 1");
    stmt.executeQuery("SELECT 1");
    stmt.executeUpdate("SELECT 1");

    stmt.close();

    try {
      stmt.execute("SELECT 1");
      fail();
    } catch (SQLException e) {
      assertTrue(e.getMessage().contains("is called on closed statement"));
    }

    try {
      stmt.executeQuery("SELECT 1");
      fail();
    } catch (SQLException e) {
      assertTrue(e.getMessage().contains("is called on closed statement"));
    }

    try {
      stmt.executeUpdate("SELECT 1");
      fail();
    } catch (SQLException e) {
      assertTrue(e.getMessage().contains("is called on closed statement"));
    }
  }

  @Test
  public void largePrepareUpdate() throws SQLException {
    createTable(
        "largePrepareUpdate",
        "a int not null primary key auto_increment, t varchar(256)",
        "engine=innodb");
    Statement stmt = sharedConnection.createStatement();
    stmt.addBatch("insert into largePrepareUpdate(t) values('a')");
    stmt.addBatch("insert into largePrepareUpdate(t) values('b')");
    stmt.addBatch("insert into largePrepareUpdate(t) values('b')");
    long[] batchRes = stmt.executeLargeBatch();
    assertArrayEquals(new long[] {1, 1, 1}, batchRes);
  }

  @Test
  public void wrongParameterValues() throws SQLException {
    Statement stmt = sharedConnection.createStatement();
    try {
      stmt.setMaxRows(-1);
      fail();
    } catch (SQLException e) {
      e.getMessage().contains("max rows cannot be negative");
    }

    try {
      stmt.setLargeMaxRows(-1);
      fail();
    } catch (SQLException e) {
      e.getMessage().contains("max rows cannot be negative");
    }

    try {
      stmt.setQueryTimeout(-1);
      fail();
    } catch (SQLException e) {
      e.getMessage().contains("Query timeout cannot be negative");
    }

    stmt.setEscapeProcessing(false);
  }

  @Test
  public void testWarnings() throws SQLException {
    Assume.assumeTrue(isMariadbServer());
    Statement stmt = sharedConnection.createStatement();
    stmt.executeQuery("select now() = 1");
    SQLWarning warning = stmt.getWarnings();
    assertTrue(warning.getMessage().contains("ncorrect datetime value: '1'"));
    stmt.clearWarnings();
    assertNull(stmt.getWarnings());
  }

  @Test
  public void testNonImplemented() throws SQLException {
    Statement stmt = sharedConnection.createStatement();
    try {
      stmt.setCursorName("name");
      fail();
    } catch (SQLFeatureNotSupportedException e) {
      e.getMessage().contains("Cursors are not supported");
    }
  }

  @Test
  public void testNoQuery() throws SQLException {
    Statement stmt = sharedConnection.createStatement();
    ResultSet rs = stmt.getGeneratedKeys();
    assertFalse(rs.next());
    assertEquals(-1, stmt.getLargeUpdateCount());
    assertEquals(ResultSet.FETCH_FORWARD, stmt.getFetchDirection());
    stmt.setFetchDirection(ResultSet.FETCH_FORWARD);
    assertEquals(0, stmt.executeLargeBatch().length);
  }

  @Test
  public void isPoolable() throws SQLException {
    Statement stmt = sharedConnection.createStatement();
    assertFalse(stmt.isPoolable());
    stmt.setPoolable(true);
  }

  @Test
  public void setFetch() throws SQLException {
    Statement stmt = sharedConnection.createStatement();
    try {
      stmt.setFetchSize(-10);
    } catch (SQLException e) {
      assertTrue(e.getMessage().contains("invalid fetch size"));
    }
  }

  @Test
  public void scrollType() throws SQLException {
    Statement stmt = sharedConnection.createStatement();
    assertEquals(ResultSet.TYPE_FORWARD_ONLY, stmt.getResultSetType());
    stmt =
        sharedConnection.createStatement(
            ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);
    assertEquals(ResultSet.TYPE_SCROLL_INSENSITIVE, stmt.getResultSetType());
  }

  @Test
  public void addBatchNull() throws SQLException {
    Statement stmt = sharedConnection.createStatement();
    try {
      stmt.addBatch(null);
    } catch (SQLException e) {
      assertTrue(e.getMessage().contains("null cannot be set to addBatch( String sql)"));
    }
  }

  @Test
  public void statementIdentifier() throws SQLException {
    MariaDbStatement stmt = (MariaDbStatement) sharedConnection.createStatement();
    assertTrue(stmt.isSimpleIdentifier("good_$one"));
    assertTrue(stmt.isSimpleIdentifier("anotherçone"));
    assertFalse(stmt.isSimpleIdentifier("another'çone"));
  }

  @Test
  public void statementEnquoteIdentifier() throws SQLException {
    MariaDbStatement stmt = (MariaDbStatement) sharedConnection.createStatement();

    assertEquals("good_$one", stmt.enquoteIdentifier("good_$one", false));
    assertEquals("`good_$one`", stmt.enquoteIdentifier("good_$one", true));
    assertEquals("`🌟s`", stmt.enquoteIdentifier("🌟s", false));
    assertEquals("`good_``è``one`", stmt.enquoteIdentifier("good_`è`one", false));
    try {
      stmt.enquoteIdentifier("\u0000ff", true);
      fail("must have thrown exception");
    } catch (SQLException e) {
      // expected
    }
  }

  @Test
  public void statementEnquoteString() throws SQLException {
    MariaDbStatement stmt = (MariaDbStatement) sharedConnection.createStatement();

    assertEquals("'good_$one'", stmt.enquoteLiteral("good_$one"));
    assertEquals(
        "'another\\Z\\'\\\"one\\n \\b test'", stmt.enquoteLiteral("another\u001A'\"one\n \b test"));
  }

  @Test
  public void escaping() throws Exception {
    try (Connection con = setConnection("&dumpQueriesOnException=true")) {
      Statement stmt = con.createStatement();
      try {
        stmt.executeQuery(
            "select {fn timestampdiff(SQL_TSI_HOUR, '2003-02-01','2003-05-01')} df df ");
        fail();
      } catch (SQLException e) {
        assertTrue(
            e.getMessage()
                .contains("select timestampdiff(HOUR, '2003-02-01','2003-05-01') df df "));
      }

      stmt.setEscapeProcessing(false);
      try {
        stmt.executeQuery(
            "select {fn timestampdiff(SQL_TSI_HOUR, '2003-02-01','2003-05-01')} df df ");
        fail();
      } catch (SQLException e) {
        assertTrue(
            e.getMessage()
                .contains(
                    "select {fn timestampdiff(SQL_TSI_HOUR, '2003-02-01','2003-05-01')} df df"));
      }
    }
  }
}
