import assert from 'assert';
import cheerio from 'cheerio';
import moment from 'moment';

import HTML from './fixtures/html';
import GenericDatePublishedExtractor from './extractor';

describe('GenericDatePublishedExtractor', () => {
  describe('extract($, metaCache)', () => {
    it('extracts datePublished from meta tags', () => {
      const $ = cheerio.load(HTML.datePublishedMeta.test);
      const metaCache = ['displaydate', 'something-else'];
      const result =
        GenericDatePublishedExtractor.extract(
          { $, url: '', metaCache }
        );

      assert.equal(
          result,
          HTML.datePublishedMeta.result.toISOString()
        );
    });

    it('extracts datePublished from selectors', () => {
      const $ = cheerio.load(HTML.datePublishedSelectors.test);
      const metaCache = [];
      const result =
        GenericDatePublishedExtractor.extract(
          { $, url: '', metaCache }
        );

      assert.equal(
          result,
          HTML.datePublishedMeta.result.toISOString()
        );
    });

    it('extracts from url formatted /2012/08/01/etc', () => {
      const $ = cheerio.load('<div></div>');
      const metaCache = [];
      const url = 'https://example.com/2012/08/01/this-is-good';
      const result =
        GenericDatePublishedExtractor.extract(
          { $, url, metaCache }
        );

      assert.equal(
          result,
          new Date('2012/08/01').toISOString()
        );
    });

    it('extracts from url formatted /2020-01-01', () => {
      const $ = cheerio.load('<div></div>');
      const metaCache = [];
      const url = 'https://example.com/2020-01-01/this-is-good';
      const result =
        GenericDatePublishedExtractor.extract(
          { $, url, metaCache }
        );

      assert.equal(
          result,
          moment(new Date('2020-01-01')).toISOString()
        );
    });

    it('extracts from url formatted /2020/jan/01', () => {
      // this works in Chrome, but not in PhantomJS, so disabling
      // for browser testing
      if (!cheerio.browser) {
        const $ = cheerio.load('<div></div>');
        const metaCache = [];
        const url = 'https://example.com/2020/jan/01/this-is-good';
        const result =
          GenericDatePublishedExtractor.extract(
            { $, url, metaCache }
          );

        assert.equal(
            result,
            moment(new Date('2020 jan 01')).toISOString()
          );
      }
    });

    it('returns null if no date can be found', () => {
      const $ = cheerio.load('<div></div>');
      const metaCache = [];
      const result =
        GenericDatePublishedExtractor.extract(
          { $, url: '', metaCache }
        );

      assert.equal(result, null);
    });
  });
});