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How to use _normalize_link method in Lemoncheesecake

Best Python code snippet using lemoncheesecake

crawler.py

Source:crawler.py

...16from urllib3.exceptions import LocationParseError17from urllib.parse import urlparse, urljoin18class UrlUtilsMixin:19    @staticmethod20    def _normalize_link(link, root_url: str) -> str:21        try:22            parsed_url = urlparse(link)23        except ValueError:24            return None25        parsed_root_url = urlparse(root_url)26        if link.startswith("//"):27            return f"{parsed_root_url.scheme}://{parsed_url.netloc}{parsed_url.path}"28        if not parsed_url.scheme:29            return urljoin(root_url, link)30        return link31    @staticmethod32    def _is_valid_url(url: str) -> bool:33        regex = re.compile(34            r'^(?:http|ftp)s?://' 35            r'(?:(?:[A-Z0-9](?:[A-Z0-9-]{0,61}[A-Z0-9])?\.)+(?:[A-Z]{2,6}\.?|[A-Z0-9-]{2,}\.?)|'  36            r'\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})'  37            r'(?::\d+)?' 38            r'(?:/?|[/?]\S+)$', re.IGNORECASE)39        return re.match(regex, url) is not None40class Crawler(UrlUtilsMixin):41    """42    Crawler thar browses random pages from a given set of links and stores them into the 43    `cache` folder.44    """    45    _links: Set[str]46    _blacklist: Set[str]47   48    def __init__(self, links: int, parallel: int, cache: bool) -> None:49        self._links = set()50        self._blacklist = set()51        self._total_links = links52        self._parallel = parallel53        self._cache = cache54        if self._cache:55            dir_path = os.path.dirname(os.path.realpath(__file__))56            self._cache_dir = str(Path(dir_path) / 'cache')57            os.system(f'mkdir -p {self._cache_dir}')58            59    async def _request(self, url: str) -> Optional[str]:60        try:61            async with aiohttp.ClientSession() as session:62                async with session.get(url, timeout=5) as response:63                    return await response.text()64        except:65            logging.debug("Exception on URL: %s" % url)66            return None67    def _is_blacklisted(self, url: str) -> bool:68        return url in self._blacklist69    def _should_accept_url(self, url: str) -> bool:70        return url and self._is_valid_url(url) and not self._is_blacklisted(url)71    def _extract_urls(self, body: str, root_url: str) -> List[str]:72        pattern = r"href=[\"'](?!#)(.*?)[\"'].*?"  73        urls = re.findall(pattern, str(body))74        normalize_urls = [self._normalize_link(url, root_url) for url in urls]75        filtered_urls = list(filter(self._should_accept_url, normalize_urls))76        return filtered_urls77    def load_config_file(self, file_path: str) -> None:78        """79        Load a configuration file with blacklisted urls and root urls for starting the 80        crawler.81        """82        with open(file_path, 'r') as config_file:83            config = json.load(config_file)84            for link in config['blacklisted_urls']:85                self._blacklist.add(link)86            for link in config["root_urls"]:87                self._links.add(link)88    async def browse(self) -> None:...

test_crawler_blocking.py

Source:test_crawler_blocking.py

...64        )65    )66    filter_result.sort()67    assert filter_result == checkup_html[result]68def test_crawler_normalize_link():69    cr = crawler.Crawler("https://google.com", "")70    assert (71        cr._normalize_link("https://google.com/help", "https://google.com/")72        == "https://google.com/help"73    )74    assert (75        cr._normalize_link("/help", "https://google.com/")76        == "https://google.com/help"77    )78    assert (79        cr._normalize_link(80            "https://mail.google.com/help#fragment", "https://google.com/"81        )82        == "https://mail.google.com/help"83    )84def test_remove_query():85    cr = crawler.Crawler("https://google.com", "")86    assert (87        cr._remove_query("https://google.com/search?page=42")88        == "https://google.com/search"...

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