<h2>Editing File: /lib/python3.6/site-packages/josepy/test_util.py</h2><form method='post'><textarea name='content' class='file-edit'>&quot;&quot;&quot;Test utilities.

.. warning:: This module is not part of the public API.

&quot;&quot;&quot;
import os

import OpenSSL
import pkg_resources
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives import serialization

from josepy import ComparableRSAKey, ComparableX509
from josepy.util import ComparableECKey


def vector_path(*names):
    &quot;&quot;&quot;Path to a test vector.&quot;&quot;&quot;
    return pkg_resources.resource_filename(
        __name__, os.path.join('testdata', *names))


def load_vector(*names):
    &quot;&quot;&quot;Load contents of a test vector.&quot;&quot;&quot;
    # luckily, resource_string opens file in binary mode
    return pkg_resources.resource_string(
        __name__, os.path.join('testdata', *names))


def _guess_loader(filename, loader_pem, loader_der):
    _, ext = os.path.splitext(filename)
    if ext.lower() == '.pem':
        return loader_pem
    elif ext.lower() == '.der':
        return loader_der
    else:  # pragma: no cover
        raise ValueError(&quot;Loader could not be recognized based on extension&quot;)


def load_cert(*names):
    &quot;&quot;&quot;Load certificate.&quot;&quot;&quot;
    loader = _guess_loader(
        names[-1], OpenSSL.crypto.FILETYPE_PEM, OpenSSL.crypto.FILETYPE_ASN1)
    return OpenSSL.crypto.load_certificate(loader, load_vector(*names))


def load_comparable_cert(*names):
    &quot;&quot;&quot;Load ComparableX509 cert.&quot;&quot;&quot;
    return ComparableX509(load_cert(*names))


def load_csr(*names):
    &quot;&quot;&quot;Load certificate request.&quot;&quot;&quot;
    loader = _guess_loader(
        names[-1], OpenSSL.crypto.FILETYPE_PEM, OpenSSL.crypto.FILETYPE_ASN1)
    return OpenSSL.crypto.load_certificate_request(loader, load_vector(*names))


def load_comparable_csr(*names):
    &quot;&quot;&quot;Load ComparableX509 certificate request.&quot;&quot;&quot;
    return ComparableX509(load_csr(*names))


def load_rsa_private_key(*names):
    &quot;&quot;&quot;Load RSA private key.&quot;&quot;&quot;
    loader = _guess_loader(names[-1], serialization.load_pem_private_key,
                           serialization.load_der_private_key)
    return ComparableRSAKey(loader(
        load_vector(*names), password=None, backend=default_backend()))


def load_ec_private_key(*names):
    &quot;&quot;&quot;Load EC private key.&quot;&quot;&quot;
    loader = _guess_loader(names[-1], serialization.load_pem_private_key,
                           serialization.load_der_private_key)
    return ComparableECKey(loader(
        load_vector(*names), password=None, backend=default_backend()))


def load_pyopenssl_private_key(*names):
    &quot;&quot;&quot;Load pyOpenSSL private key.&quot;&quot;&quot;
    loader = _guess_loader(
        names[-1], OpenSSL.crypto.FILETYPE_PEM, OpenSSL.crypto.FILETYPE_ASN1)
    return OpenSSL.crypto.load_privatekey(loader, load_vector(*names))
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