})
Context("when parsing the listen address fails", func() {
BeforeEach(func() {
startDNS.ListenAddress = "some-bogus-address"
})
It("returns a meaningful error", func() {
err := startDNS.Execute(context)
Expect(err).To(MatchError(MatchRegexp("resolve udp address:.*some-bogus-address")))
})
})
Context("when creating the dummy link fails", func() {
BeforeEach(func() {
linkFactory.CreateDummyReturns(errors.New("pineapple"))
})
It("returns a meaningful error", func() {
err := startDNS.Execute(context)
Expect(err).To(MatchError("namespace execute: create dummy: pineapple"))
})
})
Context("when adding the address fails", func() {
BeforeEach(func() {
addressManager.AddAddressReturns(errors.New("pineapple"))
})
It("returns a meaningful error", func() {
err := startDNS.Execute(context)
Name: "my-dummy",
}
})
It("uses the factory to create the adapter", func() {
err := createDummy.Execute(context)
Expect(err).NotTo(HaveOccurred())
Expect(linkFactory.CreateDummyCallCount()).To(Equal(1))
name := linkFactory.CreateDummyArgsForCall(0)
Expect(name).To(Equal("my-dummy"))
})
Context("when creating the dummy link fails", func() {
BeforeEach(func() {
linkFactory.CreateDummyReturns(errors.New("no dummy for you, dummy"))
})
It("wraps and propagates the error", func() {
err := createDummy.Execute(context)
Expect(err).To(MatchError("create dummy: no dummy for you, dummy"))
})
})
Describe("String", func() {
It("is self describing", func() {
Expect(createDummy.String()).To(Equal("ip link add my-dummy type dummy"))
})
})
})