context = &fakes.Context{}
linkFactory = &fakes.LinkFactory{}
context.LinkFactoryReturns(linkFactory)
setLinkMaster = commands.SetLinkMaster{
Master: "master-dev",
Slave: "slave-dev",
}
})
It("assigns a master to the slave", func() {
err := setLinkMaster.Execute(context)
Expect(err).NotTo(HaveOccurred())
Expect(linkFactory.SetMasterCallCount()).To(Equal(1))
slave, master := linkFactory.SetMasterArgsForCall(0)
Expect(slave).To(Equal("slave-dev"))
Expect(master).To(Equal("master-dev"))
})
Context("when the master setter fails", func() {
BeforeEach(func() {
linkFactory.SetMasterReturns(errors.New("you're not a slave"))
})
It("wraps and propogates the error", func() {
err := setLinkMaster.Execute(context)
Expect(err).To(MatchError("set link master: you're not a slave"))
})
})