Schweiz: alten Fahrplan ohne Trams nicht mehr laden, nur weil die Echtzeit noch auf ihn verweist

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01X48pE4bzjHej8w9HyZXCjb

tests/test_core.py

@@ -222,8 +222,38 @@ def test_all():
     assert shows("ch", both, 8.54, 47.378) and not shows("de", both, 8.54, 47.378)
     assert shows("de", both, 11.40, 47.26) and shows("ch", both, 11.40, 47.26)  # Ausland: beide
     assert shows("de", both, 2.355, 48.881)  # Frankreich ohne eigenen Fahrplan -> DE zeigt
-    print("alle Tests ok")
+
+
+def test_feed_choice():
+    """Echtzeit verweist auf alten Fahrplan ohne Trams -> trotzdem den neuen (mit Trams) laden."""
+    from trainpulse import server
+    with tempfile.TemporaryDirectory() as d:
+        for v, rtype in (("20261017", "102"), ("20261021", "900")):
+            p = Path(d) / "ch" / v
+            p.mkdir(parents=True)
+            (p / "meta.json").write_text("{}")
+            (p / "routes.txt").write_text(f"route_id,route_type\nR,{rtype}\n")
+        loaded = []
+
+        class Stub:
+            def __init__(self, path):
+                loaded.append(path.name)
+                self.version, self.meta, self.trip_ids = path.name, {}, []
+
+            def covers(self, day):
+                return True
+        old = server.C.FEEDS_DIR, server.Feed, server.compute_positions, dict(server.S.sources)
+        try:
+            server.C.FEEDS_DIR, server.Feed, server.compute_positions = Path(d), Stub, lambda: None
+            server.S.sources = {"ch": server.Source("ch")}
+            server.S.sources["ch"].rt_version = "20261017"
+            server.watch_feeds()
+        finally:
+            server.C.FEEDS_DIR, server.Feed, server.compute_positions, server.S.sources = old
+        assert loaded == ["20261021"], loaded
 
 
 if __name__ == "__main__":
     test_all()
+    test_feed_choice()
+    print("alle Tests ok")