test: cover portfolio import idempotency

backend/src/services/portfolio.integration.test.ts

@@ -0,0 +1,29 @@
+import assert from 'node:assert/strict';
+import { pool } from '../db/pool';
+import { importPortfolio } from './portfolio';
+
+const payload = {
+  schemaVersion: 'broker-portfolio-1.0', bank: 'PORTFOLIO_TEST', accountNumber: 'portfolio-test',
+  reportPeriod: { from: '2026-08-01', to: '2026-08-20' }, reportedAt: '2026-08-20T00:00:00+03:00',
+  positions: [{ instrument: 'Test Bond', isin: 'RU0000000001', quantity: '1.000', price: '100.123456', valuation: '100.123456' }],
+  trades: [{ instrument: 'Test Bond', isin: 'RU0000000001', concludedAt: '2026-08-10T10:00:00+03:00', side: 'Покупка', quantity: '1.000', settlementAmount: '100.123456' }],
+};
+
+async function run(): Promise<void> {
+  try {
+    const first = await importPortfolio(payload);
+    const second = await importPortfolio(payload);
+    assert.equal(first.importedTrades, 1);
+    assert.equal(second.duplicateTrades, 1);
+    const rows = await pool.query('SELECT COUNT(*)::int AS count FROM portfolio_trades WHERE account_id = $1', [first.accountId]);
+    assert.equal(rows.rows[0].count, 1);
+    console.log('portfolio import SQL: OK');
+  } finally {
+    await pool.query("DELETE FROM portfolio_trades WHERE account_id IN (SELECT id FROM accounts WHERE bank = 'PORTFOLIO_TEST' AND account_number = 'portfolio-test')");
+    await pool.query("DELETE FROM portfolio_reports WHERE account_id IN (SELECT id FROM accounts WHERE bank = 'PORTFOLIO_TEST' AND account_number = 'portfolio-test')");
+    await pool.query("DELETE FROM accounts WHERE bank = 'PORTFOLIO_TEST' AND account_number = 'portfolio-test'");
+    await pool.end();
+  }
+}
+
+run();

backend/src/services/portfolio.ts

@@ -43,11 +43,11 @@ export function validatePortfolio(body: unknown): asserts body is PortfolioFile
   }
 }
 
-export async function importPortfolio(body: unknown): Promise<ImportPortfolioResponse> {
+export async function importPortfolio(body: unknown, db: Pick<typeof pool, 'connect'> = pool): Promise<ImportPortfolioResponse> {
   validatePortfolio(body);
   const data = body;
   const sourceHash = crypto.createHash('sha256').update(JSON.stringify(data)).digest('hex');
-  const client = await pool.connect();
+  const client = await db.connect();
   try {
     await client.query('BEGIN');
     const accountResult = await client.query(