Écrans bénévole et référent redessinés, messages aux bénévoles

Étape 55 : écrans /mobile-benevole et /mobile-referent d'après la maquette
(design/Planning bénévole mobile) — créneau en cours ou prochain mis en
avant, planning par journée de festival avec frise horaire, compteurs et
pointage du référent par créneau.

Étape 56 : message de l'organisation (Edition.volunteer_message, onglet
« Message aux bénévoles ») et message de chaque poste (Position.message,
saisi par le référent), migration 0029, affichés sur l'écran bénévole.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

backend/tests/test_api_messages.py

@@ -0,0 +1,88 @@
+"""Messages aux bénévoles : celui de l'organisation (`Edition.
+volunteer_message`, coordination) et celui de chaque poste (`Position.
+message`, référent du poste ou coordination)."""
+
+from app.models import Assignment, Role
+from tests.factories import dt_at, make_position, make_shift, make_volunteer
+
+
+def test_coordination_sets_the_organisation_message(
+    client, edition, session, make_account, as_account
+):
+    resp = client.patch(f"/editions/{edition.id}", json={"volunteer_message": "  Repas à 18h  "})
+    assert resp.status_code == 200
+    assert resp.json()["volunteer_message"] == "Repas à 18h"
+    assert resp.json()["volunteer_message_updated_at"] is not None
+
+    volunteer = make_volunteer(session, edition)
+    reader = as_account(make_account(Role.VOLUNTEER, volunteer_id=volunteer.id))
+    resp = reader.get(f"/editions/{edition.id}")
+    assert resp.json()["volunteer_message"] == "Repas à 18h"
+
+
+def test_blank_message_clears_it(client, edition):
+    client.patch(f"/editions/{edition.id}", json={"volunteer_message": "Bonjour"})
+    resp = client.patch(f"/editions/{edition.id}", json={"volunteer_message": "   "})
+    assert resp.json()["volunteer_message"] is None
+    assert resp.json()["volunteer_message_updated_at"] is None
+
+
+def test_unchanged_message_keeps_its_date(client, edition):
+    first = client.patch(f"/editions/{edition.id}", json={"volunteer_message": "Bonjour"}).json()
+    again = client.patch(
+        f"/editions/{edition.id}", json={"volunteer_message": "Bonjour", "name": "X"}
+    ).json()
+    assert again["volunteer_message_updated_at"] == first["volunteer_message_updated_at"]
+
+
+def test_volunteer_and_lead_cannot_set_the_organisation_message(edition, make_account, as_account):
+    for role in (Role.VOLUNTEER, Role.LEAD):
+        resp = as_account(make_account(role)).patch(
+            f"/editions/{edition.id}", json={"volunteer_message": "Hack"}
+        )
+        assert resp.status_code == 403
+
+
+def test_message_too_long_is_rejected(client, edition):
+    resp = client.patch(f"/editions/{edition.id}", json={"volunteer_message": "x" * 2001})
+    assert resp.status_code == 422
+
+
+def test_lead_sets_the_message_of_their_position(edition, session, make_account, as_account):
+    lead = make_account(Role.LEAD)
+    position = make_position(session, edition)
+    position.lead_account_id = lead.id
+    session.add(position)
+    session.commit()
+
+    resp = as_account(lead).patch(
+        f"/editions/{edition.id}/positions/{position.id}", json={"message": "Gilet fourni"}
+    )
+    assert resp.status_code == 200
+    assert resp.json()["message"] == "Gilet fourni"
+    assert resp.json()["message_updated_at"] is not None
+
+
+def test_lead_cannot_set_the_message_of_another_position(
+    edition, session, make_account, as_account
+):
+    position = make_position(session, edition)
+    resp = as_account(make_account(Role.LEAD)).patch(
+        f"/editions/{edition.id}/positions/{position.id}", json={"message": "Hack"}
+    )
+    assert resp.status_code == 403
+
+
+def test_position_message_reaches_the_volunteer_planning(client, edition, session):
+    volunteer = make_volunteer(session, edition)
+    position = make_position(session, edition)
+    shift = make_shift(session, edition, position, start=dt_at(10, 9), end=dt_at(10, 12))
+    session.add(Assignment(edition_id=edition.id, volunteer_id=volunteer.id, shift_id=shift.id))
+    session.commit()
+    client.patch(
+        f"/editions/{edition.id}/positions/{position.id}", json={"message": "Gilet fourni"}
+    )
+
+    (entry,) = client.get(f"/editions/{edition.id}/volunteers/{volunteer.id}/planning").json()
+    assert entry["position_message"] == "Gilet fourni"
+    assert entry["position_message_updated_at"] is not None