def test_http_exists():
url = 'https://some_host.com/resource.zip'
responses.add(responses.HEAD, url, status=200)
assert downloader.http_exists(url) is True
assert downloader.http_exists(
"https://some_other_host.com/inexistent") is False
def test_http_exists_2():
url = 'https://some_host.com/resource.zip'
responses.add(responses.HEAD, url, status=404)
assert downloader.http_exists(url) is False