refactor: simplify auth and instrument pages

src/app/routes/AppRoutes/AppRoutes.test.tsx

@@ -3,7 +3,7 @@ import { QueryClientProvider } from "@tanstack/react-query";
 import { fireEvent, render, screen } from "@testing-library/react";
 import { cssVariablesResolver, theme } from "@wealthledger/ui/theme";
 import { http, HttpResponse } from "msw";
-import { MemoryRouter } from "react-router";
+import { type InitialEntry, MemoryRouter } from "react-router";
 import { describe, expect, it } from "vitest";
 
 import { AuthProvider } from "@/features/auth";
@@ -12,7 +12,7 @@ import { server } from "@/test/server";
 
 import { AppRoutes } from "./AppRoutes";
 
-function renderRoutes(path: string) {
+function renderRoutes(path: InitialEntry) {
 	return render(
 		<QueryClientProvider client={createTestQueryClient()}>
 			<MemoryRouter initialEntries={[path]}>
@@ -57,10 +57,18 @@ describe("AppRoutes", () => {
 		).toBeInTheDocument();
 	});
 
-	it("logs in through the public form and reaches the protected landing", async () => {
+	it.each([
+		{ endpoint: "login", path: "/accounts", title: "Вход" },
+		{ endpoint: "register", path: "/register", title: "Регистрация" },
+		{
+			endpoint: "login",
+			path: { pathname: "/login", state: { returnTo: "//example.com" } },
+			title: "Вход",
+		},
+	])("authenticates via $endpoint and reaches the protected landing from $path", async ({ endpoint, path, title }) => {
 		let credentials: unknown;
 		server.use(
-			http.post("*/api/v1/auth/login", async ({ request }) => {
+			http.post(`*/api/v1/auth/${endpoint}`, async ({ request }) => {
 				credentials = await request.json();
 
 				return HttpResponse.json({
@@ -69,16 +77,23 @@ describe("AppRoutes", () => {
 				});
 			}),
 		);
-		renderRoutes("/accounts");
+		renderRoutes(path);
 
-		await screen.findByRole("heading", { level: 1, name: "Вход" });
+		await screen.findByRole("heading", { level: 1, name: title });
 		fireEvent.change(screen.getByLabelText("Email"), {
 			target: { value: " User@Example.com " },
 		});
 		fireEvent.change(screen.getByLabelText("Пароль"), {
 			target: { value: "a secure password" },
 		});
-		fireEvent.click(screen.getByRole("button", { name: "Вход" }));
+
+		if (endpoint === "register") {
+			fireEvent.change(screen.getByLabelText("Подтвердите пароль"), {
+				target: { value: "a secure password" },
+			});
+		}
+
+		fireEvent.click(screen.getByRole("button", { name: title }));
 
 		expect(
 			await screen.findByRole("heading", {