RSSHub/lib/middleware/filter-engine.test.ts

import { afterAll, afterEach, describe, expect, it, vi } from 'vitest';

afterAll(() => {
    delete process.env.FILTER_REGEX_ENGINE;
});

afterEach(() => {
    delete process.env.FILTER_REGEX_ENGINE;
    vi.resetModules();
});

describe('filter-engine', () => {
    it('filter RE2 engine ReDoS attack', async () => {
        const app = (await import('@/app')).default;

        const response = await app.request('/test/1?filter=abc(%3F%3Ddef)');
        expect(response.status).toBe(503);
        expect(await response.text()).toMatch(/RE2JSSyntaxException/);
    });

    it('filter Regexp engine backward compatibility', async () => {
        process.env.FILTER_REGEX_ENGINE = 'regexp';

        const app = (await import('@/app')).default;

        const response = await app.request('/test/1?filter=abc(%3F%3Ddef)');
        expect(response.status).toBe(200);
    });

    it('filter Regexp engine test config', async () => {
        process.env.FILTER_REGEX_ENGINE = 'somethingelse';

        const app = (await import('@/app')).default;

        const response = await app.request('/test/1?filter=abc(%3F%3Ddef)');
        expect(response.status).toBe(503);
        expect(await response.text()).toMatch(/somethingelse/);
    });
});