var (
hub events.Hub
)
BeforeEach(func() {
hub = events.NewHub()
})
Describe("RegisterCallback", func() {
Context("when registering the callback", func() {
var eventSource events.EventSource
var counts chan int
BeforeEach(func() {
var err error
eventSource, err = hub.Subscribe()
Expect(err).NotTo(HaveOccurred())
counts = make(chan int, 1)
cbCounts := counts
hub.RegisterCallback(func(count int) {
cbCounts <- count
})
})
It("calls the callback immediately with the current subscriber count", func() {
Eventually(counts).Should(Receive(Equal(1)))
})
Context("when adding another subscriber", func() {
BeforeEach(func() {
