Improve family invitations and absence management flows

tests/absence-policy.test.ts

@@ -0,0 +1,73 @@
+import assert from "node:assert/strict";
+import { test } from "node:test";
+import {
+  absenceDate,
+  absenceToday,
+  canEditOwnAbsence,
+  canManageKitaAbsences,
+} from "../src/lib/absence-policy";
+import { familyInvitationView } from "../src/lib/family-invitation-view";
+
+test("Abwesenheitsdatum akzeptiert echte Kalendertage und lehnt Überläufe ab", () => {
+  assert.equal(
+    absenceDate("2028-02-29").toISOString(),
+    "2028-02-29T00:00:00.000Z",
+  );
+  for (const value of [
+    "2026-02-29",
+    "2026-04-31",
+    "2026-13-01",
+    "2026-1-09",
+    "2026-10-09T12:00:00",
+    "invalid",
+  ])
+    assert.throws(() => absenceDate(value));
+});
+
+test("Die Datumsgrenze folgt Berlin auch über Mitternacht und die Zeitumstellung", () => {
+  assert.equal(absenceToday(new Date("2026-10-09T21:59:59Z")), "2026-10-09");
+  assert.equal(absenceToday(new Date("2026-10-09T22:00:00Z")), "2026-10-10");
+  assert.equal(absenceToday(new Date("2026-10-25T22:59:59Z")), "2026-10-25");
+  assert.equal(absenceToday(new Date("2026-10-25T23:00:00Z")), "2026-10-26");
+  assert.equal(canEditOwnAbsence("2026-10-09", "2026-10-09"), false);
+  assert.equal(canEditOwnAbsence("2026-10-10", "2026-10-09"), true);
+  assert.equal(canManageKitaAbsences("ELTERN"), false);
+  for (const role of ["ADMIN", "KOORDINATOR", "ERZIEHER"])
+    assert.equal(canManageKitaAbsences(role), true);
+});
+
+test("Einladungsanzeige unterscheidet Aktivierung, Fehler, Ablauf und laufenden Versand", () => {
+  const now = new Date("2026-10-09T12:00:00Z");
+  const base = {
+    expiresAt: new Date("2026-10-16T12:00:00Z"),
+    sentAt: null,
+    failed: false,
+    leaseUntil: null,
+    status: "PENDING",
+  };
+  assert.equal(familyInvitationView(null, null, now).status, "open");
+  assert.equal(
+    familyInvitationView(null, { ...base, failed: true }, now).status,
+    "failed",
+  );
+  assert.equal(
+    familyInvitationView(null, { ...base, expiresAt: now }, now).status,
+    "expired",
+  );
+  assert.equal(
+    familyInvitationView(null, { ...base, sentAt: now }, now).status,
+    "sent",
+  );
+  assert.equal(
+    familyInvitationView(
+      null,
+      { ...base, leaseUntil: new Date(now.getTime() + 1000) },
+      now,
+    ).status,
+    "sending",
+  );
+  assert.equal(
+    familyInvitationView(now, { ...base, failed: true }, now).status,
+    "active",
+  );
+});