BeforeEach(func() { var err error link = &netlink.Veth{ LinkAttrs: netlink.LinkAttrs{ Index: 999, }, } gateway, network, err = net.ParseCIDR("172.16.1.1/24") Expect(err).NotTo(HaveOccurred()) }) It("adds a route", func() { err := routeManager.AddRoute(link, network, gateway) Expect(err).NotTo(HaveOccurred()) Expect(netlinker.RouteAddCallCount()).To(Equal(1)) route := netlinker.RouteAddArgsForCall(0) Expect(route).To(Equal(&netlink.Route{ LinkIndex: 999, Scope: netlink.SCOPE_UNIVERSE, Dst: network, Gw: gateway, })) }) Context("when adding the route fails", func() { BeforeEach(func() { netlinker.RouteAddReturns(errors.New("route add failed")) })