fix __construct(), add parentConstruct()
fix __construct(), add parentConstruct()
add testConstructor()
add testConstructor()
fix testConstructor()
fix __construct()
fix parentConstruct()
fix testInstance(), testInstanceRand()
add testWriteStmt()
fix testPDO()
fix testPDO()
fix testWriteStmt()
fix write()
fix testWriting()
fix instanceof
fix Exception
add getSections(), clearSections()
add testConstructor(), fix testFilename()