test: add unit tests for various components and utilities

- Created tests for formatBytes function to ensure correct formatting of byte values.
- Implemented tests for InjectContext to validate resource injection and cleanup.
- Added tests for logo-class helpers to verify platform alias mappings.
- Developed tests for nezha-api functions to check API response handling.
- Introduced tests for static geographic data to validate country coordinates and GeoJSON structure.
- Created comprehensive tests for utility functions including date formatting and public note parsing.
- Added tests for Server page to ensure correct rendering and functionality.
- Implemented tests for simple pages including error handling and navigation.
- Set up testing environment with Vitest and configured coverage reporting.

src/test/utils.tsx

@@ -0,0 +1,42 @@
+import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
+import { type RenderOptions, render } from "@testing-library/react";
+import type { ReactElement, ReactNode } from "react";
+import { MemoryRouter } from "react-router-dom";
+
+export function createTestQueryClient() {
+	return new QueryClient({
+		defaultOptions: {
+			queries: {
+				retry: false,
+				gcTime: 0,
+			},
+		},
+	});
+}
+
+type RenderWithProvidersOptions = RenderOptions & {
+	route?: string;
+	queryClient?: QueryClient;
+};
+
+export function renderWithProviders(
+	ui: ReactElement,
+	{
+		route = "/",
+		queryClient = createTestQueryClient(),
+		...renderOptions
+	}: RenderWithProvidersOptions = {},
+) {
+	function Wrapper({ children }: { children: ReactNode }) {
+		return (
+			<QueryClientProvider client={queryClient}>
+				<MemoryRouter initialEntries={[route]}>{children}</MemoryRouter>
+			</QueryClientProvider>
+		);
+	}
+
+	return {
+		queryClient,
+		...render(ui, { wrapper: Wrapper, ...renderOptions }),
+	};
+}