existingBridge *net.Interface
)
BeforeEach(func() {
var err error
netnsFD, err = ioutil.TempFile("", "")
Expect(err).NotTo(HaveOccurred())
existingBridge = &net.Interface{Name: "bridge"}
})
JustBeforeEach(func() {
linkConfigurer.InterfaceByNameFunc = func(name string) (*net.Interface, bool, error) {
if name == "bridge" {
return existingBridge, true, nil
}
return nil, false, nil
}
})
AfterEach(func() {
Expect(os.Remove(netnsFD.Name())).To(Succeed())
})
It("creates a virtual ethernet pair", func() {
config.HostIntf = "host"
config.BridgeName = "bridge"
config.ContainerIntf = "container"
Expect(configurer.Apply(config, netnsFD)).To(Succeed())
BeforeEach(func() {
linkApplyr = &fakedevices.FakeLink{AddIPReturns: make(map[string]error)}
configurer = &configure.Container{
Link: linkApplyr,
Logger: lagertest.NewTestLogger("test"),
}
})
Context("when the loopback device does not exist", func() {
var eth *net.Interface
BeforeEach(func() {
linkApplyr.InterfaceByNameFunc = func(name string) (*net.Interface, bool, error) {
if name != "lo" {
return eth, true, nil
}
return nil, false, nil
}
})
It("returns a wrapped error", func() {
err := configurer.Apply(config)
Expect(err).To(MatchError(&configure.FindLinkError{Cause: nil, Role: "loopback", Name: "lo"}))
})
It("does not attempt to configure other devices", func() {
Expect(configurer.Apply(config)).ToNot(Succeed())
Expect(linkApplyr.SetUpCalledWith).ToNot(ContainElement(eth))
})
})