    @Test
    public void verifyOverride() {

        System.setProperty(MacUtils.OVERRIDE_MAC_PROP, "00:DE:AD:BE:EF:11");

        byte[] mac = MacUtils.macAddress();

        Assert.assertNotNull("Could not retrieve MAC", mac);
        Assert.assertTrue("Invalid MAC address", mac.length == 6);
        Assert.assertEquals("Unexpected MAC address", "[0, -34, -83, -66, -17, 17]", Arrays.toString(mac));
        System.clearProperty(MacUtils.OVERRIDE_MAC_PROP);
    }