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"""Test utilities.
.. warning:: This module is not part of the public API.
"""
import os
import unittest
import OpenSSL
import pkg_resources
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives import serialization
from josepy import ComparableRSAKey, ComparableX509
def vector_path(*names):
"""Path to a test vector."""
return pkg_resources.resource_filename(
__name__, os.path.join('testdata', *names))
def load_vector(*names):
"""Load contents of a test vector."""
# 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("Loader could not be recognized based on extension")
def load_cert(*names):
"""Load certificate."""
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):
"""Load ComparableX509 cert."""
return ComparableX509(load_cert(*names))
def load_csr(*names):
"""Load certificate request."""
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):
"""Load ComparableX509 certificate request."""
return ComparableX509(load_csr(*names))
def load_rsa_private_key(*names):
"""Load RSA private key."""
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_pyopenssl_private_key(*names):
"""Load pyOpenSSL private key."""
loader = _guess_loader(
names[-1], OpenSSL.crypto.FILETYPE_PEM, OpenSSL.crypto.FILETYPE_ASN1)
return OpenSSL.crypto.load_privatekey(loader, load_vector(*names))
def skip_unless(condition, reason): # pragma: no cover
"""Skip tests unless a condition holds.
This implements the basic functionality of unittest.skipUnless
which is only available on Python 2.7+.
:param bool condition: If ``False``, the test will be skipped
:param str reason: the reason for skipping the test
:rtype: callable
:returns: decorator that hides tests unless condition is ``True``
"""
if hasattr(unittest, "skipUnless"):
return unittest.skipUnless(condition, reason)
elif condition:
return lambda cls: cls
else:
return lambda cls: None
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