test: event-builder shape (30402/30078/31923/22001)

Pure tests (no signing/relays): listing tags (d/title/price/status/g/t),
reservation carries canonical amount_sat as plaintext JSON, calendar
start/end + no broken 'a' tag, availability response plaintext. 20 pass.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019VUQCfdqiLSsFS2jcGnaFD

tests/test_events.py

@@ -0,0 +1,90 @@
+"""Nostr event builders — tag/kind/content shape (no signing, no relays)."""
+
+import json
+
+from ..models import AvailabilityResult, Booking, BookingStatus
+from ..nostr import events
+from ..nostr.kinds import (
+    KIND_AVAILABILITY_RESPONSE,
+    KIND_CALENDAR_EVENT,
+    KIND_LISTING,
+    KIND_RESERVATION,
+)
+from .conftest import make_room
+
+
+def _tag(ev, name):
+    """First tag value for `name`, or None."""
+    return next((t[1] for t in ev["tags"] if t[0] == name), None)
+
+
+def _tags(ev, name):
+    return [t[1] for t in ev["tags"] if t[0] == name]
+
+
+def test_listing_event_shape():
+    room = make_room(
+        currency="EUR", price=80.0,
+    )
+    room.amenities = ["wifi", "breakfast"]
+    room.location = "Château"
+    room.geohash = "u0j2"
+    room.images = ["https://img/1.jpg"]
+
+    ev = events.build_listing_event(room)
+
+    assert ev["kind"] == KIND_LISTING  # 30402
+    assert _tag(ev, "d") == room.id  # addressable: re-publish replaces
+    assert _tag(ev, "title") == "Tower Room"
+    price = next(t for t in ev["tags"] if t[0] == "price")
+    assert price == ["price", "80.0", "EUR", "night"]
+    assert _tag(ev, "status") == "active"
+    assert _tag(ev, "location") == "Château"
+    assert _tag(ev, "g") == "u0j2"
+    assert _tags(ev, "image") == ["https://img/1.jpg"]
+    assert set(_tags(ev, "t")) == {"wifi", "breakfast"}
+
+
+def test_reservation_event_is_plaintext_json_no_scaffolding():
+    booking = Booking(
+        id="bk1", room_id="room1", guest_pubkey="npub_guest",
+        check_in="2026-08-01", check_out="2026-08-04", nights=3, num_guests=2,
+        currency="sat", price_fiat=300.0, amount_sat=300, deposit_sat=300,
+        status=BookingStatus.confirmed,
+    )
+    ev = events.build_reservation_event(booking, booking.guest_pubkey)
+
+    assert ev["kind"] == KIND_RESERVATION  # 30078
+    assert _tag(ev, "d") == "bk1"
+    assert _tag(ev, "p") == "npub_guest"
+    assert "_plaintext" not in ev  # scaffolding removed; service.py encrypts content
+    payload = json.loads(ev["content"])
+    assert payload["amount_sat"] == 300  # canonical, carried verbatim
+    assert payload["status"] == "confirmed"
+
+
+def test_block_calendar_event_shape():
+    room = make_room()
+    ev = events.build_block_calendar_event(room, "2026-09-01", "2026-09-05", "blk1")
+
+    assert ev["kind"] == KIND_CALENDAR_EVENT  # 31923
+    assert _tag(ev, "d") == "room1:blk1"
+    assert _tag(ev, "start") == "2026-09-01"
+    assert _tag(ev, "end") == "2026-09-05"
+    # the broken {operator_pubkey} 'a' tag was removed
+    assert not any(t[0] == "a" for t in ev["tags"])
+
+
+def test_availability_response_is_plaintext():
+    result = AvailabilityResult(
+        room_id="room1", check_in="2026-08-01", check_out="2026-08-04",
+        available=True, nights=3, quote_sat=300, quote_fiat=3.0, currency="sat",
+    )
+    ev = events.build_availability_response(result, "npub_requester")
+
+    assert ev["kind"] == KIND_AVAILABILITY_RESPONSE  # 22001
+    assert _tag(ev, "p") == "npub_requester"
+    assert "_plaintext" not in ev  # public info: no encryption
+    payload = json.loads(ev["content"])
+    assert payload["available"] is True
+    assert payload["quote_sat"] == 300