public function test2DigitTo4DigitYearConversion()
{
$s = new TDateTimeStamp();
$this->assertEquals($s->get4DigitYear(00), 2000, "Err 2-digit 2000");
$this->assertEquals($s->get4DigitYear(10), 2010, "Err 2-digit 2010");
$this->assertEquals($s->get4DigitYear(20), 2020, "Err 2-digit 2020");
$this->assertEquals($s->get4DigitYear(30), 2030, "Err 2-digit 2030");
$this->assertEquals($s->get4DigitYear(40), 2040, "Err 2-digit 2040");
$this->assertEquals($s->get4DigitYear(50), 1950, "Err 2-digit 1950");
$this->assertEquals($s->get4DigitYear(90), 1990, "Err 2-digit 1990");
}