public function testClassOfInterface()
{
$t = new \Test\ConstantsInterface();
$this->assertTrue(is_object($t));
$this->assertSame($t->testReadInterfaceConstant1(), null);
$this->assertSame($t->testReadInterfaceConstant2(), false);
$this->assertSame($t->testReadInterfaceConstant3(), true);
$this->assertSame($t->testReadInterfaceConstant4(), 10);
$this->assertSame($t->testReadInterfaceConstant5(), 10.25);
$this->assertSame($t->testReadInterfaceConstant6(), 'test');
}