fix a variety of deprecation warnings (#1218)

setup.cfg

@@ -1,6 +1,5 @@
 [tool:pytest]
-minversion = 3.0.1
-strict = true
+addopts = "-r s --strict-markers"
 testpaths = tests
 
 [metadata]

tests/test_crypto.py

@@ -6,9 +6,9 @@
 """
 import base64
 import sys
+import warnings
 from datetime import datetime, timedelta
 from subprocess import PIPE, Popen
-from warnings import simplefilter
 
 from cryptography import x509
 from cryptography.hazmat.primitives import serialization
@@ -50,14 +50,15 @@
     load_certificate,
     load_certificate_request,
     load_crl,
-    load_pkcs12,
-    load_pkcs7_data,
     load_privatekey,
     load_publickey,
     sign,
     verify,
 )
 
+with pytest.warns(DeprecationWarning):
+    from OpenSSL.crypto import load_pkcs12, load_pkcs7_data
+
 from .util import (
     EqualityTestsMixin,
     NON_ASCII,
@@ -2604,7 +2605,7 @@ def test_load_pkcs12_text_passphrase(self):
             b"pass:" + passwd,
         )
         with pytest.warns(DeprecationWarning) as w:
-            simplefilter("always")
+            warnings.simplefilter("always")
             p12 = load_pkcs12(p12_str, passphrase=b"whatever".decode("ascii"))
             msg = "{0} for passphrase is no longer accepted, use bytes".format(
                 WARNING_TYPE_EXPECTED
@@ -2823,7 +2824,7 @@ def test_export_without_bytes(self):
         p12 = self.gen_pkcs12(server_cert_pem, server_key_pem, root_cert_pem)
 
         with pytest.warns(DeprecationWarning) as w:
-            simplefilter("always")
+            warnings.simplefilter("always")
             dumped_p12 = p12.export(passphrase=b"randomtext".decode("ascii"))
             msg = "{0} for passphrase is no longer accepted, use bytes".format(
                 WARNING_TYPE_EXPECTED
@@ -3678,8 +3679,8 @@ def test_export_md5_digest(self):
         not emit a deprecation warning.
         """
         crl = self._get_crl()
-        with pytest.warns(None) as catcher:
-            simplefilter("always")
+        with warnings.catch_warnings(record=True) as catcher:
+            warnings.simplefilter("always")
         assert 0 == len(catcher)
         dumped_crl = crl.export(self.cert, self.pkey, digest=b"md5")
         text = _runopenssl(dumped_crl, b"crl", b"-noout", b"-text")
@@ -4368,14 +4369,14 @@ def test_sign_verify_with_text(self):
         cert = load_certificate(FILETYPE_PEM, root_cert_pem)
         for digest in ["md5", "sha1", "sha256"]:
             with pytest.warns(DeprecationWarning) as w:
-                simplefilter("always")
+                warnings.simplefilter("always")
                 sig = sign(priv_key, content, digest)
             assert "{0} for data is no longer accepted, use bytes".format(
                 WARNING_TYPE_EXPECTED
             ) == str(w[-1].message)
 
             with pytest.warns(DeprecationWarning) as w:
-                simplefilter("always")
+                warnings.simplefilter("always")
                 verify(cert, sig, content, digest)
             assert "{0} for data is no longer accepted, use bytes".format(
                 WARNING_TYPE_EXPECTED

tests/test_ssl.py

@@ -2769,7 +2769,7 @@ def test_client_set_session(self):
         ctx = Context(TLSv1_2_METHOD)
         ctx.use_privatekey(key)
         ctx.use_certificate(cert)
-        ctx.set_session_id("unity-test")
+        ctx.set_session_id(b"unity-test")
 
         def makeServer(socket):
             server = Connection(ctx, socket)