const supertest = require('supertest');
const Parser = require('rss-parser');
const parser = new Parser();
const wait = require('../../lib/utils/wait');
let server;

beforeAll(() => {
    process.env.CACHE_EXPIRE = 1;
});

afterEach(() => {
    delete process.env.CACHE_TYPE;
    jest.resetModules();
    server.close();
});

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

describe('cache', () => {
    it('memory', async () => {
        process.env.CACHE_TYPE = 'memory';
        server = require('../../lib/index').server;
        const request = supertest(server);

        const response1 = await request.get('/test/1');
        const parsed1 = await parser.parseString(response1.text);

        const response2 = await request.get('/test/1');
        const parsed2 = await parser.parseString(response2.text);

        delete parsed1.lastBuildDate;
        delete parsed2.lastBuildDate;
        expect(parsed2).toMatchObject(parsed1);

        expect(response2.status).toBe(200);
        expect(response2.headers['x-koa-memory-cache']).toBe('true');
        expect(response2.headers).not.toHaveProperty('x-koa-redis-cache');

        await wait(1 * 1000 + 10);
        const response3 = await request.get('/test/1');
        expect(response3.headers).not.toHaveProperty('x-koa-redis-cache');
        expect(response3.headers).not.toHaveProperty('x-koa-memory-cache');
    });

    it('redis', async () => {
        process.env.CACHE_TYPE = 'redis';
        server = require('../../lib/index').server;
        const request = supertest(server);

        const response1 = await request.get('/test/1');
        const parsed1 = await parser.parseString(response1.text);

        const response2 = await request.get('/test/1');
        const parsed2 = await parser.parseString(response2.text);

        delete parsed1.lastBuildDate;
        delete parsed2.lastBuildDate;
        expect(parsed2).toMatchObject(parsed1);

        expect(response2.status).toBe(200);
        expect(response2.headers['x-koa-redis-cache']).toBe('true');
        expect(response2.headers).not.toHaveProperty('x-koa-memory-cache');

        await wait(1 * 1000 + 10);
        const response3 = await request.get('/test/1');
        expect(response3.headers).not.toHaveProperty('x-koa-redis-cache');
        expect(response3.headers).not.toHaveProperty('x-koa-memory-cache');
    });
});