Implement DDS exercise, customer UI and local demo

backend/tests/test_demo_no_db.py

@@ -0,0 +1,75 @@
+"""Явный локальный демо-режим не зависит от Postgres."""
+
+import time
+from uuid import uuid4
+
+from fastapi.testclient import TestClient
+
+from app.api.auth import DEMO_TRAINEE_ID
+from app.config import get_settings
+from app.main import app
+from app.session.hub import hub
+
+
+def _wait_for(predicate, timeout=3):
+    until = time.monotonic() + timeout
+    while time.monotonic() < until:
+        value = predicate()
+        if value:
+            return value
+        time.sleep(0.02)
+    raise AssertionError("занятие не стартовало")
+
+
+def _read_until(socket, wanted):
+    for _ in range(20):
+        event = socket.receive_json()
+        if event["type"] == wanted:
+            return event
+    raise AssertionError(f"не пришло событие {wanted}")
+
+
+def test_demo_without_db_starts_dds_and_issues_owned_trainee_cookie(monkeypatch):
+    monkeypatch.setenv("DEMO_NO_DB", "true")
+    monkeypatch.setenv("DEV_AUTH_BYPASS", "true")
+    monkeypatch.setenv("VOICE_ENABLED", "false")
+    get_settings.cache_clear()
+    try:
+        with TestClient(app) as client:
+            health = client.get("/api/health").json()
+            assert health["status"] == "ok" and health["demo_no_db"] is True
+            assert health["scenarios_loaded"] > 0
+            assert hub.journal is None
+
+            assert client.post("/api/auth/login", json={
+                "login": "demo-instructor", "password": "demo"
+            }).json()["role"] == "instructor"
+            assert client.post("/api/auth/login", json={
+                "login": "unknown", "password": "demo"
+            }).status_code == 401
+            assert client.post("/api/auth/dev-token?role=trainee").json()["trainee_id"] == str(DEMO_TRAINEE_ID)
+            assert client.post("/api/auth/dev-token").json()["role"] == "instructor"
+            assert client.get("/api/trainees").json() == [
+                {"id": str(DEMO_TRAINEE_ID), "name": "Демо-курсант", "group": None}
+            ]
+            # БД-зависимые экраны получают быстрый и явный отказ, не ждут TCP timeout.
+            assert client.get("/api/sessions").json()["detail"] == "database_disabled_demo"
+
+            session_id = uuid4()
+            with client.websocket_connect(f"/ws/control/{session_id}") as control:
+                control.send_json({
+                    "type": "scenario.start", "scenario_id": "fire-apartment-l2",
+                    "trainee": "Демо-курсант", "trainee_id": str(DEMO_TRAINEE_ID),
+                    "mode": "training", "exercise": "dds",
+                })
+                state = _wait_for(lambda: hub.get(session_id))
+                assert state.trainee_id == DEMO_TRAINEE_ID
+                who = client.post("/api/auth/login", json={
+                    "login": "demo-trainee", "password": "demo"
+                }).json()
+                assert who["trainee_id"] == str(DEMO_TRAINEE_ID)
+                with client.websocket_connect(f"/ws/station/{session_id}") as station:
+                    assert _read_until(station, "card.received")["card"]["address"]
+                    assert _read_until(station, "station.state")["snapshot"]["card_index"] == 1
+    finally:
+        get_settings.cache_clear()