/**
  * @depends testRegistryWriteDat
  */
 public function testRegistryDeleteDat()
 {
     $r = $this->rm->registryDelete(0, 'key', 'name_dat', 'dat');
     $this->assertTrue($r, 'registryDelete not successful');
     $r = $this->rm->registryReadDefault(0, 'key', 'name_dat', 'dat', strtotime('now'));
     $this->assertEquals($r, strtotime('now'));
 }