old_contents: import pytest
  
  import keyring
  from keyring.testing.backend import BackendBasicTests
  from keyring.backends import macOS
  
  
  @pytest.mark.skipif(
      not keyring.backends.macOS.Keyring.viable,
      reason="macOS backend not viable",
  )
  class TestOSXKeychain(BackendBasicTests):
      def init_keyring(self):
          return macOS.Keyring()
  
new_contents: import pytest
  
  import keyring
  from keyring.testing.backend import BackendBasicTests
  from keyring.backends import macOS
  
  
  @pytest.mark.skipif(
      not keyring.backends.macOS.Keyring.viable,
      reason="macOS backend not viable",
  )
  class Test_macOSKeychain(BackendBasicTests):
      def init_keyring(self):
          return macOS.Keyring()
  
subject: Rename test to match preferred naming convention for macOS.