chore: import DH V2 D5.6.4 production baseline

api-v3/test/unit/administration-integrity.test.ts

@@ -0,0 +1,25 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { ConflictException } from '@nestjs/common';
+import type { EntityManager } from 'typeorm';
+import { assertAdministrativeRecoveryRemains } from '../../src/administration/common/administration-audit';
+
+function managerWithCount(count: number): EntityManager {
+  return {
+    query: async () => [{ count }],
+  } as unknown as EntityManager;
+}
+
+test('administrative integrity accepts at least one recovery administrator', async () => {
+  await assert.doesNotReject(
+    assertAdministrativeRecoveryRemains(managerWithCount(1)),
+  );
+});
+
+test('administrative integrity prevents removing the last recovery administrator', async () => {
+  await assert.rejects(
+    assertAdministrativeRecoveryRemains(managerWithCount(0)),
+    (error: unknown) =>
+      error instanceof ConflictException && error.getStatus() === 409,
+  );
+});