time to remove commoncrypto, fare thee well (#3551)

* time to remove commoncrypto, fare thee well

* remove even more

* update the changelog

* remove more things

* don't need this function

* remove CAST5 CTR tests since that was only supported in commoncrypto

* assert a thing

2 files changed, 0 insertions, 71 deletions

diff --git a/tests/hazmat/backends/test_backendinit.py b/tests/hazmat/backends/test_backendinit.py
deleted file mode 100644
index b930f99f..00000000
--- a/tests/hazmat/backends/test_backendinit.py
+++ /dev/null
@@ -1,17 +0,0 @@
-# This file is dual licensed under the terms of the Apache License, Version
-# 2.0, and the BSD License. See the LICENSE file in the root of this repository
-# for complete details.
-
-from __future__ import absolute_import, division, print_function
-
-from cryptography.hazmat.backends import _backend_import_fallback
-
-
-def test_backend_import_fallback_empty_backends():
-    backends = _backend_import_fallback([])
-    assert len(backends) >= 1
-
-
-def test_backend_import_fallback_existing_backends():
-    backend_list = [1, 2, 3, 4]
-    assert backend_list == _backend_import_fallback(backend_list)
diff --git a/tests/hazmat/backends/test_commoncrypto.py b/tests/hazmat/backends/test_commoncrypto.py
deleted file mode 100644
index 2b730e93..00000000
--- a/tests/hazmat/backends/test_commoncrypto.py
+++ /dev/null
@@ -1,54 +0,0 @@
-# This file is dual licensed under the terms of the Apache License, Version
-# 2.0, and the BSD License. See the LICENSE file in the root of this repository
-# for complete details.
-
-from __future__ import absolute_import, division, print_function
-
-import pytest
-
-from cryptography.exceptions import InternalError, _Reasons
-from cryptography.hazmat.backends import _available_backends
-from cryptography.hazmat.primitives.ciphers import Cipher
-from cryptography.hazmat.primitives.ciphers.algorithms import AES
-from cryptography.hazmat.primitives.ciphers.modes import CBC, GCM
-
-from ...doubles import DummyCipherAlgorithm
-from ...utils import raises_unsupported_algorithm
-
-
-@pytest.mark.skipif("commoncrypto" not in
-                    [i.name for i in _available_backends()],
-                    reason="CommonCrypto not available")
-class TestCommonCrypto(object):
-    def test_supports_cipher(self):
-        from cryptography.hazmat.backends.commoncrypto.backend import backend
-        assert backend.cipher_supported(None, None) is False
-
-    def test_register_duplicate_cipher_adapter(self):
-        from cryptography.hazmat.backends.commoncrypto.backend import backend
-        with pytest.raises(ValueError):
-            backend._register_cipher_adapter(
-                AES, backend._lib.kCCAlgorithmAES128,
-                CBC, backend._lib.kCCModeCBC
-            )
-
-    def test_handle_response(self):
-        from cryptography.hazmat.backends.commoncrypto.backend import backend
-
-        with pytest.raises(ValueError):
-            backend._check_cipher_response(backend._lib.kCCAlignmentError)
-
-        with pytest.raises(InternalError):
-            backend._check_cipher_response(backend._lib.kCCMemoryFailure)
-
-        with pytest.raises(InternalError):
-            backend._check_cipher_response(backend._lib.kCCDecodeError)
-
-    def test_nonexistent_aead_cipher(self):
-        from cryptography.hazmat.backends.commoncrypto.backend import Backend
-        b = Backend()
-        cipher = Cipher(
-            DummyCipherAlgorithm(), GCM(b"fake_iv_here"), backend=b,
-        )
-        with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_CIPHER):
-            cipher.encryptor()