🚧 Update topic explorer

2026-09-20 17:57:05 +02:00
parent 6385a27411
commit b8e7c14368
10 changed files with 1344 additions and 3888 deletions
@@ -283,6 +283,58 @@ def test_topic_explorer_flow(admin_client):
    assert any(m["topic"] == "site/config/level" for m in retained.json())


+def test_topic_explorer_stream_delivers_first_message(admin_client, monkeypatch):
+    """Regression test: the SSE cursor must include a session's FIRST
+    buffered message (index 0). messages_since is strictly-greater, so
+    a cursor starting at 0 dropped it — subscribe, publish {"cmd":"start"}
+    then {"cmd":"stop"}, and the stream must deliver BOTH."""
+    from app import explorer as explorer_module
+
+    sub = admin_client.post("/api/v1/topics/subscribe", json={"topic_filter": "e2e/#"})
+    assert sub.status_code == 200
+    session_id = sub.json()["session_id"]
+
+    session = explorer_module.sessions.get(session_id)
+    # Simulate the broker delivering both payloads (as _on_message would).
+    session.buffer = [
+        {
+            "index": 0,
+            "topic": "e2e/diff/device1",
+            "qos": 1,
+            "retain": False,
+            "received_at": 1.0,
+            "payload_b64": "eyJjbWQiOiAic3RhcnQifQ==",
+            "payload_text": '{"cmd": "start"}',
+            "properties": None,
+        },
+        {
+            "index": 1,
+            "topic": "e2e/diff/device1",
+            "qos": 1,
+            "retain": False,
+            "received_at": 2.0,
+            "payload_b64": "eyJjbWQiOiAic3RvcCJ9",
+            "payload_text": '{"cmd": "stop"}',
+            "properties": None,
+        },
+    ]
+
+    with admin_client.stream("GET", f"/api/v1/topics/stream/{session_id}") as response:
+        assert response.status_code == 200
+        assert response.headers["content-type"].startswith("text/event-stream")
+        received = []
+        for line in response.iter_lines():
+            if line.startswith("data:"):
+                received.append(json.loads(line[len("data:"):].strip()))
+            if len(received) == 2:
+                break
+
+    assert [m["payload_text"] for m in received] == [
+        '{"cmd": "start"}',
+        '{"cmd": "stop"}',
+    ], "stream must deliver the session's first message (index 0), not drop it"
+
+
 def test_topic_explorer_publish_audited(admin_client, db_session):
    """Publishes through the test console are audited (spec section 35),
    and wildcards are rejected."""