frontend/src/app/routes/DocumentTitle/DocumentTitle.test.tsx

import type { FC } from "react";

import { QueryClientProvider } from "@tanstack/react-query";
import {
	act,
	fireEvent,
	render,
	screen,
	waitFor,
} from "@testing-library/react";
import { http, HttpResponse } from "msw";
import { MemoryRouter, useNavigate } from "react-router";
import { beforeEach, describe, expect, it } from "vitest";

import { AuthProvider } from "@/features/auth";
import { createTestQueryClient } from "@/test/query";
import { resource } from "@/test/resource";
import { server } from "@/test/server";

import { ProtectedDocumentTitle } from "./DocumentTitle";

const Navigation: FC = () => {
	const navigate = useNavigate();
	return (
		<>
			<button onClick={() => navigate("/accounts/all/income")} type="button">
				Все счета
			</button>
			<button onClick={() => navigate(-1)} type="button">
				Назад
			</button>
		</>
	);
};

const renderTitle = (path: string) =>
	render(
		<QueryClientProvider client={createTestQueryClient()}>
			<MemoryRouter initialEntries={[path]}>
				<AuthProvider>
					<ProtectedDocumentTitle />
					<Navigation />
				</AuthProvider>
			</MemoryRouter>
		</QueryClientProvider>,
	);

beforeEach(() => {
	document.title = "Previous page";
	server.use(
		http.post("*/api/v1/auth/refresh", () =>
			HttpResponse.json({
				accessToken: "test-token",
				user: { email: "user@example.com", id: "user-1" },
			}),
		),
	);
});

describe("document titles", () => {
	it("updates a loading account name and follows account scope and history", async () => {
		const { promise: accountsReady, resolve: resolveAccounts } = Promise.withResolvers<void>();
		server.use(
			http.get("*/api/v1/brokerage-accounts", async () => {
				await accountsReady;
				return HttpResponse.json(resource([{ id: "a", name: "ИИС" }]));
			}),
		);
		renderTitle("/accounts/a/income?from=2026-01-01&to=2026-08-31");
		expect(document.title).toBe("Пассивный доход — Счет — WealthLedger");
		await act(() => Promise.resolve(resolveAccounts()));
		await waitFor(() =>
			expect(document.title).toBe("Пассивный доход — ИИС — WealthLedger"),
		);
		fireEvent.click(screen.getByRole("button", { name: "Все счета" }));
		expect(document.title).toBe("Пассивный доход — Все счета — WealthLedger");
		fireEvent.click(screen.getByRole("button", { name: "Назад" }));
		expect(document.title).toBe("Пассивный доход — ИИС — WealthLedger");
	});

	it.each([
		["bonds", "SU26238RMFS4", "Облигация", "ОФЗ 26238"],
		["stocks", "SBER", "Акция", "Сбербанк"],
	])(
		"updates the %s title when instrument data arrives",
		async (kind, id, fallback, name) => {
			server.use(
				http.get(`*/api/v1/${kind}/by-ticker/:ticker`, () =>
					HttpResponse.json(resource({ name })),
				),
			);
			renderTitle(`/${kind}/${id}`);
			expect(document.title).toBe(`${fallback} — WealthLedger`);
			await waitFor(() =>
				expect(document.title).toBe(`${name} — WealthLedger`),
			);
		},
	);

	it("keeps a useful title when the instrument is unavailable", async () => {
		let isRequested = false;
		server.use(
			http.get("*/api/v1/stocks/by-ticker/:ticker", () => {
				isRequested = true;
				return HttpResponse.json({ code: "NOT_FOUND" }, { status: 404 });
			}),
		);
		renderTitle("/stocks/missing");
		await waitFor(() => expect(isRequested).toBe(true));
		expect(document.title).toBe("Акция — WealthLedger");
	});
});