public function testConstantsDeclaration()
{
$t = new Constants();
$this->assertNull(Constants::C1);
$this->assertFalse(Constants::C2);
$this->assertTrue(Constants::C3);
$this->assertSame(Constants::C4, 10);
$this->assertSame(Constants::C5, 10.25);
$this->assertSame(Constants::C6, 'test');
$this->assertSame(Constants::className, 'Test\\Constants');
$this->assertSame(Constants::STD_PROP_LIST, \ArrayObject::STD_PROP_LIST);
}