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())
Expect(vethCreator.CreateCalledWith.HostIfcName).To(Equal("host"))
Expect(vethCreator.CreateCalledWith.ContainerIfcName).To(Equal("container"))
})
Context("when creating the pair fails", func() {
It("returns a wrapped error", func() {
config.HostIntf = "host"
config.BridgeName = "bridge"
config.ContainerIntf = "container"
vethCreator.CreateReturns.Err = errors.New("foo bar baz")
err := configurer.Apply(config, netnsFD)
Expect(err).To(HaveOccurred())
Expect(err).To(MatchError(&configure.VethPairCreationError{Cause: vethCreator.CreateReturns.Err, HostIfcName: "host", ContainerIfcName: "container"}))
})
})
Context("when the container interface does not exist", func() {
BeforeEach(func() {
linkApplyr.InterfaceByNameFunc = func(name string) (*net.Interface, bool, error) {
if name == "lo" {
return &net.Interface{Name: name}, true, nil
}
return nil, false, nil
}
})
It("returns a wrapped error", func() {
config.ContainerIntf = "foo"
err := configurer.Apply(config)
Expect(err).To(MatchError(&configure.FindLinkError{Cause: nil, Role: "container", Name: "foo"}))
})
})
Context("when the container interface exists", func() {
BeforeEach(func() {
linkApplyr.InterfaceByNameFunc = func(name string) (*net.Interface, bool, error) {
return &net.Interface{Name: name}, true, nil
}
})
It("Adds the requested IP", func() {
config.ContainerIntf = "foo"
config.ContainerIP, config.Subnet, _ = net.ParseCIDR("2.3.4.5/6")