feat: add portfolio

src/entities/portfolio/api/usePortfolio.test.tsx

@@ -0,0 +1,45 @@
+import { MantineProvider } from "@mantine/core";
+import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
+import { renderHook, waitFor } from "@testing-library/react";
+import type { ReactNode } from "react";
+import { describe, expect, it, vi } from "vitest";
+
+const { get } = vi.hoisted(() => ({ get: vi.fn() }));
+
+vi.mock("../../../shared/api", () => ({ apiClient: { GET: get } }));
+
+import { portfolioQueryPolicy, usePortfolio } from "./usePortfolio";
+
+describe("usePortfolio", () => {
+	it("uses the account endpoint with a 30 second cache and no retry", async () => {
+		const client = new QueryClient();
+		get.mockResolvedValueOnce({
+			data: {
+				lastSuccessfulAt: "2026-08-13T10:00:00Z",
+				isStale: false,
+				totalsByCurrency: [],
+				positions: [],
+				cashBalances: [],
+			},
+		});
+		const wrapper = ({ children }: { children: ReactNode }) => (
+			<MantineProvider>
+				<QueryClientProvider client={client}>{children}</QueryClientProvider>
+			</MantineProvider>
+		);
+
+		const { result } = renderHook(() => usePortfolio("account-1", "token"), {
+			wrapper,
+		});
+
+		await waitFor(() => expect(result.current.isSuccess).toBe(true));
+		expect(get).toHaveBeenCalledWith(
+			"/api/v1/brokerage-accounts/{accountId}/portfolio",
+			{
+				params: { path: { accountId: "account-1" } },
+				headers: { Authorization: "Bearer token" },
+			},
+		);
+		expect(portfolioQueryPolicy).toEqual({ staleTime: 30_000, retry: false });
+	});
+});