old_contents: # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #    http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
  # implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  import pytest
  
  from cryptography.hazmat.bindings.commoncrypto.binding import Binding
  
  
  @pytest.mark.commoncrypto
  class TestCommonCrypto(object):
      def test_binding_loads(self):
          binding = Binding()
          assert binding
          assert binding.lib
          assert binding.ffi
  
new_contents: # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #    http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
  # implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  import pytest
  
  
  @pytest.mark.commoncrypto
  class TestCommonCrypto(object):
      def test_binding_loads(self):
          from cryptography.hazmat.bindings.commoncrypto.binding import Binding
          binding = Binding()
          assert binding
          assert binding.lib
          assert binding.ffi
  
      def test_binding_returns_same_lib(self):
          from cryptography.hazmat.bindings.commoncrypto.binding import Binding
          binding = Binding()
          binding2 = Binding()
          assert binding.lib == binding2.lib
          assert binding.ffi == binding2.ffi
  
subject: cover a missing branch in the commoncrypto bindings