feat(investments): warn and offer retry after exhausted read retries (WealthLedger/frontend#55) (#136)

src/pages/account/ui/AccountPage/AccountPage.test.tsx

@@ -60,6 +60,10 @@ function configureTestAuth() {
 	});
 }
 
+// Automatic read retries wait 1s + 2s before the failure is final.
+const RETRIES_EXHAUSTED_MS = 6000;
+const TEST_MS = 10_000;
+
 function renderAccountRoute(queryClient: QueryClient, accountId = "account-1") {
 	configureTestAuth();
 
@@ -1255,6 +1259,110 @@ describe("AccountPage states", () => {
 		expect(screen.getByText("Вторая")).toBeInTheDocument();
 	});
 
+	it(
+		"keeps cached totals, then warns and retries the same portfolio GET",
+		{ timeout: TEST_MS },
+		async () => {
+			let isFailing = false;
+			let requests = 0;
+			server.use(
+				http.get("*/api/v1/brokerage-accounts/:accountId/portfolio", () => {
+					requests += 1;
+					if (isFailing)
+						return HttpResponse.json(
+							{ code: "TBANK_UNAVAILABLE" },
+							{ status: 503 },
+						);
+
+					return HttpResponse.json(resource(
+						requests === 1
+							? portfolio
+							: { ...portfolio, totalsByCurrency: [{ currency: "RUB", value: "999" }] },
+						{ resourceKey: "portfolio" },
+					));
+				}),
+			);
+			const queryClient = createTestQueryClient();
+			renderAccountRoute(queryClient);
+			await screen.findByText("Вторая");
+			expect(screen.queryByRole("button", { name: "Повторить" }))
+				.not.toBeInTheDocument();
+
+			isFailing = true;
+			void queryClient.invalidateQueries({
+				queryKey: portfolioQueryOptions("account-1").queryKey,
+			});
+
+			const retry = await screen.findByRole(
+				"button",
+				{ name: "Повторить" },
+				{ timeout: RETRIES_EXHAUSTED_MS },
+			);
+
+			expect(screen.getByText("Не удалось обновить данные")).toBeInTheDocument();
+			expect(screen.getByText("Вторая")).toBeInTheDocument();
+			expect(screen.getByText("1 234,5 ₽")).toBeInTheDocument();
+			// One cached read plus the three automatic attempts.
+			expect(requests).toBe(4);
+
+			isFailing = false;
+			fireEvent.click(retry);
+
+			expect(await screen.findByText("999 ₽")).toBeInTheDocument();
+			expect(requests).toBe(5);
+			expect(screen.queryByText("Не удалось обновить данные"))
+				.not.toBeInTheDocument();
+			expect(screen.queryByRole("button", { name: "Повторить" }))
+				.not.toBeInTheDocument();
+		},
+	);
+
+	it(
+		"offers retry after an initial temporary failure and recovers in place",
+		{ timeout: TEST_MS },
+		async () => {
+			let isFailing = true;
+			let requests = 0;
+			server.use(
+				http.get("*/api/v1/brokerage-accounts/:accountId/portfolio", () => {
+					requests += 1;
+
+					return isFailing
+						? HttpResponse.json({ code: "TBANK_UNAVAILABLE" }, { status: 503 })
+						: HttpResponse.json(resource(portfolio, { resourceKey: "portfolio" }));
+				}),
+			);
+			renderAccountRoute(createTestQueryClient());
+
+			const retry = await screen.findByRole(
+				"button",
+				{ name: "Повторить" },
+				{ timeout: RETRIES_EXHAUSTED_MS },
+			);
+
+			expect(requests).toBe(3);
+			isFailing = false;
+			fireEvent.click(retry);
+
+			expect(await screen.findByText("Вторая")).toBeInTheDocument();
+			expect(requests).toBe(4);
+		},
+	);
+
+	it.each(["NOT_FOUND", "UNAUTHORIZED"])(
+		"does not offer a plain retry for %s after a cached portfolio",
+		async (code) => {
+			server.use(
+				http.get("*/api/v1/brokerage-accounts/:accountId/portfolio", () =>
+					HttpResponse.json({ code }, { status: code === "NOT_FOUND" ? 404 : 401 })),
+			);
+			renderAccountRoute(createTestQueryClient());
+			await waitFor(() =>
+				expect(screen.queryByRole("heading", { name: "Загрузка" })).not.toBeInTheDocument());
+			expect(screen.queryByRole("button", { name: "Повторить" })).not.toBeInTheDocument();
+		},
+	);
+
 	it.each([503])(
 		"preserves totals quietly through refresh error %i and success",
 		async (status) => {