The SQL files for the eZ Find Test Suite are already imported in the suite, but get re-imported in the eZFindElevateConfigurationTest class. This causes an SQL error because the table already exists at this point.

protected $sqlFiles = array( 'extension/ezfind/sql/mysql/mysql.sql' );

public function setUp()
{
    parent::setUp();
    ezpTestDatabaseHelper::insertSqlData( $this->sharedFixture, $this->sqlFiles );
}