func main() {
ps := pubsub.New()
router := httprouter.New()
router = ps.SetupRoutes(router)
log.Fatal(http.ListenAndServe(":8080", router))
}
func TestPubSub(t *testing.T) {
ps := pubsub.New()
router = httprouter.New()
router = ps.SetupRoutes(router)
topic := "pubsub"
subscriber1 := "me"
subscriber2 := "me2"
message := "variable content string"
var msgs []pubsub.Message
// Publish without subscribers, this message should not be delivered after subscription
rec, _ := newRequest("POST", fmt.Sprintf("/%s", topic), strings.NewReader(`{"message": "should not be delivered"}`))
if rec.Code != http.StatusNoContent {
t.Errorf("publishing to topic, expecting status code %d, got %d and body %s", http.StatusCreated, rec.Code, rec.Body.String())
}
// Subscribe with subscriber1
rec, _ = newRequest("POST", fmt.Sprintf("/%s/%s", topic, subscriber1), nil)
if rec.Code != http.StatusCreated {
t.Errorf("subscribing to topic with subscriber, expecting status code %d, got %d and body %s", http.StatusCreated, rec.Code, rec.Body.String())
}
// Subscribe with subscriber2
rec, _ = newRequest("POST", fmt.Sprintf("/%s/%s", topic, subscriber2), nil)
if rec.Code != http.StatusCreated {
t.Errorf("subscribing to topic with subscriber2, expecting status code %d, got %d and body %s", http.StatusCreated, rec.Code, rec.Body.String())
}
// Publish
rec, _ = newRequest("POST", fmt.Sprintf("/%s", topic), strings.NewReader(`{"message": "`+message+`"}`))
if rec.Code != http.StatusCreated {
t.Errorf("publishing to topic, expecting status code %d, got %d and body %s", http.StatusCreated, rec.Code, rec.Body.String())
}
// Polling with subscriber
rec, _ = newRequest("GET", fmt.Sprintf("/%s/%s", topic, subscriber1), nil)
if rec.Code != http.StatusOK {
t.Errorf("polling messages from topic with subscriber1, expecting status code %d, got %d and body %s", http.StatusOK, rec.Code, rec.Body.String())
}
err := json.Unmarshal(rec.Body.Bytes(), &msgs)
if err != nil {
t.Errorf("unmarshal message from topic with subscriber1, got %s", err.Error())
}
if len(msgs) != 1 {
t.Errorf("polling messages from topic with subscriber1, expecting message count to be 1 got %s", len(msgs))
}
if msgs[0].Content != message {
t.Errorf("polling messages from topic with subscriber1, expecting message to be %s, got %s", message, msgs[0].Content)
}
if msgs[0].Published.IsZero() {
t.Errorf("polling messages from topic with subscriber1, expecting published to NOT be zero value")
}
// Polling with subscriber2
rec, _ = newRequest("GET", fmt.Sprintf("/%s/%s", topic, subscriber2), nil)
if rec.Code != http.StatusOK {
t.Errorf("polling messages from topic with subscriber2, expecting status code %d, got %d and body %s", http.StatusOK, rec.Code, rec.Body.String())
}
err = json.Unmarshal(rec.Body.Bytes(), &msgs)
if err != nil {
t.Errorf("unmarshal message from topic with subscriber2, got %s", err.Error())
}
if len(msgs) != 1 {
t.Errorf("polling messages from topic with subscriber2, expecting message count to be 1 got %s", len(msgs))
}
if msgs[0].Content != message {
t.Errorf("polling messages from topic with subscriber2, expecting message to be %s, got %s", message, msgs[0].Content)
}
if msgs[0].Published.IsZero() {
t.Errorf("polling messages from topic with subscriber2, expecting published to NOT be zero value")
}
// Polling again should return 204 and an empty array
rec, _ = newRequest("GET", fmt.Sprintf("/%s/%s", topic, subscriber1), nil)
if rec.Code != http.StatusNoContent {
t.Errorf("polling messages from topic, expecting status code %d, got %d and body %s", http.StatusNoContent, rec.Code, rec.Body.String())
}
if rec.Body.String() != "" {
t.Errorf("polling messages from topic again, expecting empty body, got %s", rec.Body.String())
}
// Unsubscribe
rec, _ = newRequest("DELETE", fmt.Sprintf("/%s/%s", topic, subscriber1), nil)
if rec.Code != http.StatusNoContent {
t.Errorf("unsubscribing from topic, expecting status code %d, got %d and body %s", http.StatusNoContent, rec.Code, rec.Body.String())
}
// Polling after unsubscribe should return 404
rec, _ = newRequest("GET", fmt.Sprintf("/%s/%s", topic, subscriber1), nil)
if rec.Code != http.StatusNotFound {
t.Errorf("polling messages from topic, expecting status code %d, got %d and body %s", http.StatusNotFound, rec.Code, rec.Body.String())
}
}
