Expect(err).ToNot(HaveOccurred())
Eventually(cmd, "5s").Should(gexec.Exit(0))
})
It("moves the interface in to the given namespace by pid", func() {
// look at this perfectly ordinary hat
netns, err := gexec.Start(exec.Command("ip", "netns", "exec", "gdnsetnstest", "sleep", "6312736"), GinkgoWriter, GinkgoWriter)
Expect(err).ToNot(HaveOccurred())
defer netns.Kill()
// (it has the following fd)
f, err := os.Open("/var/run/netns/gdnsetnstest")
Expect(err).ToNot(HaveOccurred())
// I wave the magic wand
Expect(l.SetNs(intf, int(f.Fd()))).To(Succeed())
// the bunny has vanished! where is the bunny?
intfs, _ := net.Interfaces()
Expect(intfs).ToNot(ContainElement(intf))
// oh my word it's in the hat!
session, err := gexec.Start(exec.Command("sh", "-c", fmt.Sprintf("ip netns exec gdnsetnstest ifconfig %s", name)), GinkgoWriter, GinkgoWriter)
Expect(err).ToNot(HaveOccurred())
Eventually(session, "5s").Should(gexec.Exit(0))
})
Context("when the interface does not exist", func() {
It("returns the error", func() {
Expect(l.SetNs(&net.Interface{Name: "something"}, 1234)).To(MatchError("devices: Link not found"))
})
