it("#setMacroParam calls #command with params", function() {
      sphero.setMacroParam(0x01, 0x02, 0x03, callback);
      expect(sphero.command).to.be.calledOnce;
      expect(sphero.command)
        .to.be.calledWith(0x02, 0x57, [0x01, 0x02, 0x03], callback);