test: add page hierarchy cycle integration harness

apps/server/test/support/database.ts

@@ -0,0 +1,43 @@
+import { CamelCasePlugin, Kysely, sql } from 'kysely';
+import { PostgresJSDialect } from 'kysely-postgres-js';
+import * as postgres from 'postgres';
+import { DbInterface } from '../../src/database/types/db.interface';
+
+const databaseUrl = process.env.TEST_DATABASE_URL;
+
+if (!databaseUrl) {
+  throw new Error('TEST_DATABASE_URL must be set for integration tests');
+}
+
+const postgresPool = postgres(databaseUrl, { max: 1, onnotice: () => {} });
+
+export const db = new Kysely<DbInterface>({
+  dialect: new PostgresJSDialect({ postgres: postgresPool }),
+  plugins: [new CamelCasePlugin()],
+});
+
+export async function withStatementTimeout<T>(
+  callback: (connection: Kysely<DbInterface>) => Promise<T>,
+): Promise<T> {
+  return db.connection().execute(async (connection) => {
+    await sql`SET statement_timeout = '500ms'`.execute(connection);
+
+    try {
+      return await callback(connection);
+    } finally {
+      await sql`SET statement_timeout = DEFAULT`.execute(connection);
+    }
+  });
+}
+
+export async function truncateFixtureTables(): Promise<void> {
+  await sql`TRUNCATE TABLE pages, spaces, workspaces CASCADE`.execute(db);
+}
+
+afterEach(async () => {
+  await truncateFixtureTables();
+});
+
+afterAll(async () => {
+  await postgresPool.end();
+});