How to use the hepcrawl.testlib.fixtures.clean_dir function in hepcrawl

def cleanup():
    yield

    clean_dir(path=os.path.join(os.getcwd(), '.scrapy'))
    clean_dir('/tmp/file_urls')
    clean_dir('/tmp/WSP')

def cleanup():
    yield
    clean_dir('/tmp/last_runs/')

def remove_generated_files(package_location):
    clean_dir()
    clean_dir(path=os.path.join(os.getcwd(), '.scrapy'))

    _, dirs, files = next(os.walk(package_location))
    for dir_name in dirs:
        clean_dir(os.path.join(package_location, dir_name))
    for file_name in files:
        if not file_name.endswith('.zip'):
            os.unlink(os.path.join(package_location, file_name))

def remove_generated_files(package_location):
    clean_dir()
    clean_dir(path=os.path.join(os.getcwd(), '.scrapy'))

    _, dirs, files = next(os.walk(package_location))
    for dir_name in dirs:
        clean_dir(os.path.join(package_location, dir_name))
    for file_name in files:
        if not file_name.endswith('.zip'):
            os.unlink(os.path.join(package_location, file_name))

crawler = Crawler(spidercls=arxiv_spider.ArxivSpider)
    spider = arxiv_spider.ArxivSpider.from_crawler(crawler)
    fake_response = fake_response_from_file(
        'arxiv/sample_arxiv_record0.xml',
        response_type=TextResponse,
    )
    test_selectors = fake_response.xpath('.//record')
    parsed_items = [spider.parse_record(sel) for sel in test_selectors]

    pipeline = InspireCeleryPushPipeline()
    pipeline.open_spider(spider)

    yield [_get_record_from_processed_item(parsed_item, spider) for parsed_item in parsed_items]

    clean_dir()

return crawl_result['record']

    crawler = Crawler(spidercls=crossref_spider.CrossrefSpider)
    spider = crossref_spider.CrossrefSpider.from_crawler(crawler, 'fakedoi')
    fake_response = fake_response_from_file(
        'crossref/sample_crossref_record.json',
        response_type=TextResponse,
    )
    parsed_items = spider.parse(fake_response)

    pipeline = InspireCeleryPushPipeline()
    pipeline.open_spider(spider)

    yield _get_record_from_processed_item(parsed_items, spider)

    clean_dir()

fake_response = fake_response_from_file(
        'arxiv/sample_arxiv_record.xml',
        response_type=TextResponse,
    )

    test_selectors = fake_response.xpath('.//record')
    parsed_items = [spider.parse_record(sel) for sel in test_selectors]
    pipeline = InspireCeleryPushPipeline()
    pipeline.open_spider(spider)

    yield [
        _get_processed_record(parsed_item, spider)
        for parsed_item in parsed_items
    ]

    clean_dir()

def cleanup():
    yield

    clean_dir(path=os.path.join(os.getcwd(), '.scrapy'))
    clean_dir('/tmp/file_urls')
    clean_dir('/tmp/WSP')

def cleanup():
    clean_dir()
    clean_dir(path=os.path.join(os.getcwd(), '.scrapy'))
    yield
    clean_dir()
    clean_dir(path=os.path.join(os.getcwd(), '.scrapy'))

def cleanup():
    clean_dir()
    clean_dir(path=os.path.join(os.getcwd(), '.scrapy'))
    yield
    clean_dir()
    clean_dir(path=os.path.join(os.getcwd(), '.scrapy'))