Repository: yt-dlp/yt-dlp
File: yt_dlp/extractor/redgifs.py (Python)

Code before:

    def _paged_entries(self, ep, item_id, query, fields):
        page = int_or_none(query.get('page', (None,))[0])
        page_fetcher = functools.partial(
            self._fetch_page, ep, item_id, self._prepare_api_query(query, fields))
        return page_fetcher(page) if page else OnDemandPagedList(page_fetcher, self._PAGE_SIZE)


class RedGifsIE(RedGifsBaseInfoExtractor):
    _VALID_URL = r'https?://(?:(?:www\.)?redgifs\.com/watch/|thumbs2\.redgifs\.com/)(?P<id>[^-/?#\.]+)'
    _TESTS = [{
        'url': 'https://www.redgifs.com/watch/squeakyhelplesswisent',
        'info_dict': {
            'id': 'squeakyhelplesswisent',
            'ext': 'mp4',
            'title': 'Hotwife Legs Thick',
            'timestamp': 1636287915,
            'upload_date': '20211107',
            'uploader': 'ignored52',
            'duration': 16,
            'view_count': int,
            'like_count': int,
            'categories': list,
            'age_limit': 18,
        }
    }, {
        'url': 'https://thumbs2.redgifs.com/SqueakyHelplessWisent-mobile.mp4#t=0',
        'info_dict': {
            'id': 'squeakyhelplesswisent',
            'ext': 'mp4',
            'title': 'Hotwife Legs Thick',
            'timestamp': 1636287915,
            'upload_date': '20211107',
            'uploader': 'ignored52',
            'duration': 16,
            'view_count': int,
            'like_count': int,
            'categories': list,
            'age_limit': 18,
        }
    }]

    def _real_extract(self, url):
        video_id = self._match_id(url).lower()
        video_info = self._call_api(
            f'gifs/{video_id}', video_id, note='Downloading video info')
        return self._parse_gif_data(video_info['gif'])


class RedGifsSearchIE(RedGifsBaseInfoExtractor):
    IE_DESC = 'Redgifs search'

Review comment (refactor):
```suggestion
            'view_count': int,
```
If you edit tests when there is an issue in the extractor, what's the point of tests?

Code after:
        if 'authorization' not in self._API_HEADERS:
            self._fetch_oauth_token(video_id)
        assert 'authorization' in self._API_HEADERS

        headers = dict(self._API_HEADERS)
        headers['x-customheader'] = f'https://www.redgifs.com/watch/{video_id}'
        data = self._download_json(
            f'https://api.redgifs.com/v2/{ep}', video_id, headers=headers, *args, **kwargs)
        if 'error' in data:
            raise ExtractorError(f'RedGifs said: {data["error"]}', expected=True, video_id=video_id)
        return data

    def _fetch_page(self, ep, video_id, query, page):
        query['page'] = page + 1
        data = self._call_api(
            ep, video_id, query=query, note=f'Downloading JSON metadata page {page + 1}')

        for entry in data['gifs']:
            yield self._parse_gif_data(entry)

    def _prepare_api_query(self, query, fields):
        api_query = [
            (field_name, query.get(field_name, (default,))[0])
            for field_name, default in fields.items()]

        return {key: val for key, val in api_query if val is not None}

    def _paged_entries(self, ep, item_id, query, fields):
        page = int_or_none(query.get('page', (None,))[0])
        page_fetcher = functools.partial(
            self._fetch_page, ep, item_id, self._prepare_api_query(query, fields))
        return page_fetcher(page) if page else OnDemandPagedList(page_fetcher, self._PAGE_SIZE)


class RedGifsIE(RedGifsBaseInfoExtractor):
    _VALID_URL = r'https?://(?:(?:www\.)?redgifs\.com/watch/|thumbs2\.redgifs\.com/)(?P<id>[^-/?#\.]+)'
    _TESTS = [{
        'url': 'https://www.redgifs.com/watch/squeakyhelplesswisent',
        'info_dict': {
            'id': 'squeakyhelplesswisent',
            'ext': 'mp4',
            'title': 'Hotwife Legs Thick',
            'timestamp': 1636287915,
            'upload_date': '20211107',
            'uploader': 'ignored52',
            'duration': 16,
            'view_count': int,
            'like_count': int,
            'categories': list,
            'age_limit': 18,
            'tags': list,