Bump the minimum PyPy/cffi version and simplify as a result (#3585)

* Bump the minimum PyPy/cffi version and simplify as a result

* unused imports

* grumble, fix

1 files changed, 0 insertions, 48 deletions

diff --git a/tests/hazmat/primitives/test_ciphers.py b/tests/hazmat/primitives/test_ciphers.py
index 60faa0c5..f1718c07 100644
--- a/tests/hazmat/primitives/test_ciphers.py
+++ b/tests/hazmat/primitives/test_ciphers.py
@@ -7,8 +7,6 @@ from __future__ import absolute_import, division, print_function
 import binascii
 import os
 
-import cffi
-
 import pytest
 
 from cryptography.exceptions import AlreadyFinalized, _Reasons
@@ -141,10 +139,6 @@ def test_invalid_backend():
         ciphers.Cipher(AES(b"AAAAAAAAAAAAAAAA"), modes.ECB, pretend_backend)
 
 
-@pytest.mark.skipif(
-    cffi.__version_info__ < (1, 7),
-    reason="cffi version too old"
-)
 @pytest.mark.supported(
     only_if=lambda backend: backend.cipher_supported(
         AES(b"\x00" * 16), modes.ECB()
@@ -259,45 +253,3 @@ class TestCipherUpdateInto(object):
         buf = bytearray(5)
         with pytest.raises(ValueError):
             encryptor.update_into(b"testing", buf)
-
-
-@pytest.mark.skipif(
-    cffi.__version_info__ >= (1, 7),
-    reason="cffi version too new"
-)
-@pytest.mark.requires_backend_interface(interface=CipherBackend)
-class TestCipherUpdateIntoUnsupported(object):
-    def _too_old(self, mode, backend):
-        key = b"\x00" * 16
-        c = ciphers.Cipher(AES(key), mode, backend)
-        encryptor = c.encryptor()
-        buf = bytearray(32)
-        with pytest.raises(NotImplementedError):
-            encryptor.update_into(b"\x00" * 16, buf)
-
-    @pytest.mark.supported(
-        only_if=lambda backend: backend.cipher_supported(
-            AES(b"\x00" * 16), modes.ECB()
-        ),
-        skip_message="Does not support AES ECB",
-    )
-    def test_cffi_too_old_ecb(self, backend):
-        self._too_old(modes.ECB(), backend)
-
-    @pytest.mark.supported(
-        only_if=lambda backend: backend.cipher_supported(
-            AES(b"\x00" * 16), modes.CTR(b"0" * 16)
-        ),
-        skip_message="Does not support AES CTR",
-    )
-    def test_cffi_too_old_ctr(self, backend):
-        self._too_old(modes.CTR(b"0" * 16), backend)
-
-    @pytest.mark.supported(
-        only_if=lambda backend: backend.cipher_supported(
-            AES(b"\x00" * 16), modes.GCM(b"0" * 16)
-        ),
-        skip_message="Does not support AES GCM",
-    )
-    def test_cffi_too_old_gcm(self, backend):
-        self._too_old(modes.GCM(b"0" * 16), backend)