})
It("calls the callback with the new subscriber count", func() {
Eventually(counts).Should(Receive(Equal(2)))
})
})
Context("when all subscribers are dropped", func() {
BeforeEach(func() {
Eventually(counts).Should(Receive())
err := eventSource.Close()
Expect(err).NotTo(HaveOccurred())
// emit event so hub sees closed source and drops subscription
hub.Emit(eventfakes.FakeEvent{})
})
It("calls the callback with a zero count", func() {
Eventually(counts).Should(Receive(BeZero()))
})
})
Context("when the hub is closed", func() {
BeforeEach(func() {
Eventually(counts).Should(Receive())
err := hub.Close()
Expect(err).NotTo(HaveOccurred())
})
Context("when failing to subscribe to the event hub", func() {
BeforeEach(func() {
hub.Close()
})
It("returns an internal server error", func() {
Expect(response.StatusCode).To(Equal(http.StatusInternalServerError))
})
})
Context("when successfully subscribing to the event hub", func() {
It("emits events from the hub to the connection", func() {
reader := sse.NewReadCloser(response.Body)
hub.Emit(&eventfakes.FakeEvent{Token: "A"})
encodedPayload := base64.StdEncoding.EncodeToString([]byte("A"))
Expect(reader.Next()).To(Equal(sse.Event{
ID: "0",
Name: "fake",
Data: []byte(encodedPayload),
}))
hub.Emit(&eventfakes.FakeEvent{Token: "B"})
encodedPayload = base64.StdEncoding.EncodeToString([]byte("B"))
Expect(reader.Next()).To(Equal(sse.Event{
ID: "1",
Name: "fake",
Data: []byte(encodedPayload),