/**
  * Test replace mode.
  */
 public function testReplace()
 {
     $last_insert_id = $this->connection->insert('writers', ['id' => 1, 'name' => 'Anton Chekhov', 'birthday' => new DateTime('1860-01-29')], ConnectionInterface::REPLACE);
     $this->assertEquals(1, $last_insert_id);
     $this->assertEquals(3, $this->connection->executeFirstCell('SELECT COUNT(`id`) AS "row_count" FROM `writers`'));
     $this->assertEquals(['id' => 1, 'name' => 'Anton Chekhov', 'birthday' => '1860-01-29'], $this->connection->executeFirstRow('SELECT * FROM `writers` WHERE `id` = ?', $last_insert_id));
 }