const Config = require('../config');
const RequestList = require('../requestList');
const requestPromiseNativeMock = require('request-promise-native');

describe('RequestList', () => {
    const endpoint = 'http://martianwabbit.com';

    let env = {
        environmental: true
    };

    const doc = {
        ENDPOINT: endpoint,
        ENVIRONMENT: env,
        'GET /post': { alias: 'get-posts' },
        'POST /user': {
            alias: 'user',
            payload: {
                name: 'Sergio',
                lastname: 'Diaz'
            }
        }
    };

    let requests;
    beforeEach(() => {
        requestPromiseNativeMock.fail = false;

        let config = new Config(doc);
        requests = new RequestList(config);
    });

    it('should allow an empty request list', () => {
        requests = new RequestList();
        expect(requests.list.length).toBe(0);
    });

    it('should load valid requests', () => {
        expect(requests.list.length).toBe(2);
    });

    it('should fetch dependencies', async () => {
        await expect(
            requests.fetchDependencies(['get-posts'])
        ).resolves.toMatchSnapshot();
    });

    it('should execute requests by alias.', async () => {
        await expect(requests.execByAlias('user')).resolves.toMatchSnapshot();
    });

    it('should fail if the request fails', async () => {
        requestPromiseNativeMock.fail = true;
        await expect(requests.execByAlias('user')).rejects.toThrow();
    });

    it('should return a cached result if available', async () => {
        const obj = { test: true };
        requests.cache.add('test', obj);
        await expect(requests.execByAlias('test')).resolves.toBe(obj);
    });

    it('should fail if the alias is not found', async () => {
        await expect(requests.execByAlias('notAnAlias')).rejects.toThrow();
    });

    it(`should fail if a given request doesn't have an alias`, () => {
        let config = new Config({
            'GET /hello': {
                headers: {
                    hello: 1
                }
            }
        });

        expect(() => new RequestList(config, config)).toThrow();
    });
});