feat: remove top header and rework mobile bottom navigation (#109)

src/app/ui/AppShell/AppShell.test.tsx

@@ -0,0 +1,47 @@
+import { MantineProvider } from "@mantine/core";
+import { render, screen, within } from "@testing-library/react";
+import { MemoryRouter } from "react-router";
+import { describe, expect, it } from "vitest";
+
+import { AppShell } from "./AppShell";
+
+function renderShell(path: string) {
+	return render(
+		<MantineProvider>
+			<MemoryRouter initialEntries={[path]}>
+				<AppShell />
+			</MemoryRouter>
+		</MantineProvider>,
+	);
+}
+
+describe("AppShell", () => {
+	it("has no header banner", () => {
+		renderShell("/cards");
+
+		expect(screen.queryByRole("banner")).not.toBeInTheDocument();
+	});
+
+	it("marks only the current bottom navigation item", () => {
+		renderShell("/cards");
+
+		const bottomNav = screen
+			.getAllByRole("navigation", { name: "Основная навигация" })
+			.at(-1);
+
+		if (!bottomNav) {
+			throw new Error("Bottom navigation is not rendered");
+		}
+
+		const links = within(bottomNav).getAllByRole("link");
+
+		expect(links).toHaveLength(5);
+		expect(within(bottomNav).getByRole("link", { name: "Карты" })).toHaveAttribute(
+			"aria-current",
+			"page",
+		);
+		expect(
+			within(bottomNav).getByRole("link", { name: "Счета" }),
+		).not.toHaveAttribute("aria-current");
+	});
+});