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package eventsource
import (
"io"
"net/http/httptest"
"reflect"
"testing"
"time"
)
const (
eventChannelName = "Test"
timeToWaitForEvent = 100 * time.Millisecond
)
func TestStreamSubscribeEventsChan(t *testing.T) {
server := NewServer()
httpServer := httptest.NewServer(server.Handler(eventChannelName))
// The server has to be closed before the httpServer is closed.
// Otherwise the httpServer has still an open connection and it can not close.
defer httpServer.Close()
defer server.Close()
stream := mustSubscribe(t, httpServer.URL, "")
publishedEvent := &publication{id: "123"}
server.Publish([]string{eventChannelName}, publishedEvent)
select {
case receivedEvent := <-stream.Events:
if !reflect.DeepEqual(receivedEvent, publishedEvent) {
t.Errorf("got event %+v, want %+v", receivedEvent, publishedEvent)
}
case <-time.After(timeToWaitForEvent):
t.Error("Timed out waiting for event")
}
}
func TestStreamSubscribeErrorsChan(t *testing.T) {
server := NewServer()
httpServer := httptest.NewServer(server.Handler(eventChannelName))
defer httpServer.Close()
stream := mustSubscribe(t, httpServer.URL, "")
server.Close()
select {
case err := <-stream.Errors:
if err != io.EOF {
t.Errorf("got error %+v, want %+v", err, io.EOF)
}
case <-time.After(timeToWaitForEvent):
t.Error("Timed out waiting for error event")
}
}
func TestStreamClose(t *testing.T) {
server := NewServer()
httpServer := httptest.NewServer(server.Handler(eventChannelName))
// The server has to be closed before the httpServer is closed.
// Otherwise the httpServer has still an open connection and it can not close.
defer httpServer.Close()
defer server.Close()
stream := mustSubscribe(t, httpServer.URL, "")
stream.Close()
// its safe to Close the stream multiple times
stream.Close()
select {
case _, ok := <-stream.Events:
if ok {
t.Error("Expected stream.Events channel to be closed. Is still open.")
}
case <-time.After(timeToWaitForEvent):
t.Error("Timed out waiting for stream.Events channel to close")
}
select {
case _, ok := <-stream.Errors:
if ok {
t.Error("Expected stream.Errors channel to be closed. Is still open.")
}
case <-time.After(timeToWaitForEvent):
t.Error("Timed out waiting for stream.Errors channel to close")
}
}
func mustSubscribe(t *testing.T, url, lastEventId string) *Stream {
stream, err := Subscribe(url, lastEventId)
if err != nil {
t.Fatalf("Failed to subscribe: %s", err)
}
return stream
}
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