public function testDisplay() { $elem = new AttributeRecord($this->frame); $this->assertEquals("0x00", $elem->displayDirection()); $this->assertEquals("0x0020", $elem->displayAttributeId()); $this->assertEquals("Direction: 0x00, AttributeId: 0x0020", $elem->__toString()); $this->assertEquals("0x00 0x20 0x00", $elem->displayFrame()); }