test(nest): red for #10 — post/get endpoints, event-driven trigger, SSE stream

nestsse_test.go

@@ -0,0 +1,53 @@
+package main
+
+import (
+	"bufio"
+	"net/http"
+	"testing"
+	"time"
+)
+
+// TestNestStreamSSE checks GET /api/events?nest_id= streams nest.message events
+// and replays history from Last-Event-ID (the EVENTS.md nest SSE contract).
+func TestNestStreamSSE(t *testing.T) {
+	ts, s := newTestNestServer(t)
+	id := newNest(t, ts, "Lab", `"Hugin"`)
+	s.hub.OpenNest(id)
+	if _, out := post(t, ts.URL+"/api/nests/"+id+"/messages", `{"author":"owner","text":"hello"}`); out["msg_id"] == nil {
+		t.Fatalf("post failed: %v", out)
+	}
+
+	req, err := http.NewRequest("GET", ts.URL+"/api/events?nest_id="+id, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer resp.Body.Close()
+	if ct := resp.Header.Get("Content-Type"); ct != "text/event-stream" {
+		t.Fatalf("content type %q", ct)
+	}
+
+	// Read in a goroutine with a deadline so a stuck stream fails, not hangs.
+	got := make(chan bool, 1)
+	go func() {
+		sc := bufio.NewScanner(resp.Body)
+		for sc.Scan() {
+			if sc.Text() == "event: nest.message" {
+				got <- true
+				return
+			}
+		}
+		got <- false
+	}()
+	select {
+	case ok := <-got:
+		if !ok {
+			t.Fatal("stream ended before nest.message appeared")
+		}
+	case <-time.After(2 * time.Second):
+		t.Fatal("no nest.message event within 2s")
+	}
+}