public function testSystemDeleteDat()
 {
     $r = $this->rm->systemDelete('key', 'name_dat', 'dat');
     $this->assertTrue($r, 'systemDelete not successful');
     $r = $this->rm->systemReadDefault('key', 'name_dat', 'dat', strtotime('1990-01-01'));
     $this->assertEquals(strtotime('1990-01-01'), $r);
 }
 public function testSystemReadDefaultNull()
 {
     $r = $this->rm->systemReadDefault('key', 'name_null', 'int', null);
     $this->assertEquals(null, $r);
 }