test/unit/url.spec.js

import assert from 'assert';
import Url from '../../lib/url';

describe('url Url', () => {
  Url.setSlugOptions({
    lower: true,
  });

  describe('interpolatePermalink', () => {
    it('handles simple interpolations', () => {
      assert.equal(
        Url.interpolatePermalink('/:title/', {
          title: 'banana',
        }),
        '/banana/'
      );
    });

    it('handles duplicate param interpolations', () => {
      assert.equal(
        Url.interpolatePermalink('/:title/:title/', {
          title: 'banana',
        }),
        '/banana/banana/'
      );
    });

    it('handles permalink with no interpolation', () => {
      assert.equal(
        Url.interpolatePermalink('/index.html', {
          title: 'banana',
        }),
        '/index.html'
      );
    });

    it("throw if it can't find value to interpolate in permalink", () => {
      assert.throws(() => {
        Url.interpolatePermalink('/:title/:unknown/', {
          title: 'banana',
        });
      });
    });

    it('handles special date permalink values', () => {
      assert.equal(
        Url.interpolatePermalink('/:date|YYYY/:date|MM/:date|D/:title/', {
          title: '  In the future, the past will be history.  ',
          date: new Date('2000-02-28T00:00:00-05:00'),
        }),
        '/2000/02/28/in-the-future-the-past-will-be-history/'
      );

      assert.equal(
        Url.interpolatePermalink(
          '/:date_future|YYYY/:date|MM/:date|D/:title/',
          {
            title: 'Does jello dance, or does it just jiggle?  ',
            date: new Date('2000-02-28T00:00:00-05:00'),
            date_future: new Date('2020-10-01T00:00:00-05:00'),
          }
        ),
        '/2020/02/28/does-jello-dance-or-does-it-just-jiggle/'
      );
    });
  });

  describe('pathHasMarkdownExtension', () => {
    it('matches known extensions', () => {
      const markdownExtensions = ['md', 'markdown'];

      assert.equal(
        Url.pathHasMarkdownExtension(
          '/_posts/hello-world.md',
          markdownExtensions
        ),
        true
      );

      assert.equal(
        Url.pathHasMarkdownExtension(
          '/_posts/hello-world.markdown',
          markdownExtensions
        ),
        true
      );

      assert.equal(
        Url.pathHasMarkdownExtension(
          '/_posts/hello-world.mkdown',
          markdownExtensions
        ),
        false
      );

      assert.equal(
        Url.pathHasMarkdownExtension(
          '/_posts/hello-world.html',
          markdownExtensions
        ),
        false
      );
    });
  });

  describe('replaceMarkdownExtension', () => {
    it('replaces known markdown extensions', () => {
      const markdownExtensions = ['md', 'markdown'];

      assert.equal(
        Url.replaceMarkdownExtension(
          '/_posts/hello-world.md',
          markdownExtensions
        ),
        '/_posts/hello-world.html'
      );

      assert.equal(
        Url.replaceMarkdownExtension(
          '/_posts/hello-world.markdown',
          markdownExtensions
        ),
        '/_posts/hello-world.html'
      );

      assert.equal(
        Url.replaceMarkdownExtension(
          '/_posts/hello-world.mkdown',
          markdownExtensions
        ),
        '/_posts/hello-world.mkdown'
      );

      assert.equal(
        Url.replaceMarkdownExtension(
          '/_posts/hello-world.html',
          markdownExtensions
        ),
        '/_posts/hello-world.html'
      );
    });
  });

  describe('makeUrlFileSystemSafe', () => {
    it('appends index.html to a url that has no file extension', () => {
      assert.equal(
        Url.makeUrlFileSystemSafe('/my-beautiful-html-permalink'),
        '/my-beautiful-html-permalink/index.html'
      );

      assert.equal(
        Url.makeUrlFileSystemSafe('/my-beautiful-html-permalink/'),
        '/my-beautiful-html-permalink/index.html'
      );

      assert.equal(
        Url.makeUrlFileSystemSafe('my-beautiful-html-permalink'),
        '/my-beautiful-html-permalink/index.html'
      );
    });

    it('does not append index.html to a url that does not need it', () => {
      assert.equal(
        Url.makeUrlFileSystemSafe('/html/goes-here.html'),
        '/html/goes-here.html'
      );

      assert.equal(
        Url.makeUrlFileSystemSafe('/html/image.png'),
        '/html/image.png'
      );

      assert.equal(
        Url.makeUrlFileSystemSafe('/html/index.gif'),
        '/html/index.gif'
      );
    });
  });

  describe('makePretty', () => {
    it('works', () => {
      let url = '/html/goes-here.html';
      assert.equal(Url.makePretty(url), url);

      url = '/my/beautiful-dream';
      assert.equal(Url.makePretty(url), url);

      url = '/have-you-got-a-minute/';
      assert.equal(Url.makePretty(`${url}index.html`), url);

      url = '/no-time-to-wasteindex.html';
      assert.equal(Url.makePretty(url), url);

      url = '/favicon.ico';
      assert.equal(Url.makePretty(url), url);

      url = '/images/index.gif';
      assert.equal(Url.makePretty(url), url);

      url = '/CNAME';
      assert.equal(Url.makePretty(url), url);
    });
  });
});