refactor: organize backend by business responsibility

2026-09-13 13:52:57 +03:00
parent 7fde3ece6e
commit 8ba005346d
145 changed files with 3027 additions and 2346 deletions
@@ -0,0 +1,86 @@
+import {
+  PortfolioDto,
+  PortfolioPositionDto,
+} from '../../../portfolio/presentation/portfolio.dto';
+import { stockPosition } from './stock-position';
+
+const money = (value: string, currency = 'RUB') => ({ value, currency });
+const row = (
+  quantity = '2',
+  average = '10',
+  value = '30',
+  uid = 'common',
+): PortfolioPositionDto => ({
+  instrumentUid: uid,
+  figi: uid,
+  displayName: uid,
+  type: 'STOCK',
+  quantity,
+  averagePurchasePrice: money(average),
+  currentValue: money(value),
+  absoluteReturn: money('10'),
+  isin: null,
+  ticker: null,
+  logoName: null,
+});
+const portfolio = (positions: PortfolioPositionDto[]): PortfolioDto => ({
+  positions,
+  cashBalances: [],
+  totalsByCurrency: [],
+  isStale: false,
+  lastSuccessfulAt: '2026-09-10T00:00:00Z',
+  structure: { currencies: [], unvaluedCategories: [] },
+});
+
+describe('stock position', () => {
+  it('weights costs exactly and keeps preferred shares separate', () => {
+    const result = stockPosition(
+      portfolio([
+        row(),
+        row('3', '20', '70'),
+        row('100', '1', '100', 'preferred'),
+      ]),
+      'common',
+    );
+    expect(result.quantity).toBe('5');
+    expect(result.averagePurchasePrice).toEqual(money('16'));
+    expect(result.currentValue).toEqual(money('100'));
+    expect(result.absoluteReturn).toEqual(money('20'));
+    expect(result.returnPercent).toBe('25');
+    expect(result.accounts[0].returnPercent).toBe('50');
+  });
+  it('does not round large amounts through floating point', () => {
+    const result = stockPosition(
+      portfolio([row('9007199254740993', '0.1', '900719925474099.3')]),
+      'common',
+    );
+    expect(result.quantity).toBe('9007199254740993');
+    expect(result.averagePurchasePrice?.value).toBe('0.1');
+  });
+  it('does not sum currencies or treat unknown values as zero', () => {
+    const second = {
+      ...row(),
+      currentValue: money('2', 'USD'),
+      averagePurchasePrice: null,
+      absoluteReturn: null,
+    };
+    const result = stockPosition(portfolio([row(), second]), 'common');
+    expect(result.quantity).toBe('4');
+    expect(result.currentValue).toBeNull();
+    expect(result.averagePurchasePrice).toBeNull();
+    expect(result.absoluteReturn).toBeNull();
+    expect(result.returnPercent).toBeNull();
+  });
+  it('keeps no-position and offsetting long/short holdings honest', () => {
+    expect(stockPosition(portfolio([]), 'common')).toMatchObject({
+      quantity: '0',
+      accounts: [],
+      currentValue: null,
+      returnPercent: null,
+    });
+    expect(
+      stockPosition(portfolio([row(), row('-2')]), 'common')
+        .averagePurchasePrice,
+    ).toBeNull();
+  });
+});