import { readdirSync } from 'node:fs';
import { join } from 'node:path';
import { describe, expect, it } from 'vitest';

function collectReservedRouteTestFiles(directory: string): string[] {
	const entries = readdirSync(directory, { withFileTypes: true });
	const reservedTestFiles: string[] = [];

	for (const entry of entries) {
		const entryPath = join(directory, entry.name);

		if (entry.isDirectory()) {
			reservedTestFiles.push(...collectReservedRouteTestFiles(entryPath));
			continue;
		}

		if (!entry.name.startsWith('+')) continue;
		if (!entry.name.includes('.test.') && !entry.name.includes('.spec.')) continue;

		reservedTestFiles.push(entryPath);
	}

	return reservedTestFiles;
}

describe('SvelteKit route file conventions', () => {
	it('does not place test files in reserved +prefixed route filenames', () => {
		const routeDirectory = import.meta.dirname;
		const reservedTestFiles = collectReservedRouteTestFiles(routeDirectory);

		expect(reservedTestFiles).toEqual([]);
	});
});