public function testSetPosXMethodSetsPosXAndGetPosXMethodReturnsPosX() { $adapter = $this->getMockBuilder('Phower\\Image\\Adapter\\AdapterInterface')->getMock(); $layer = new Layer($adapter); $posX = 10; $this->assertInstanceOf('Phower\\Image\\LayerInterface', $layer->setPosX($posX)); $this->assertEquals($posX, $layer->getPosX()); }