22     def test_hash_reject_unicode(self, backend):  argument
23         m = hashes.Hash(hashes.SHA1(), backend=backend)
27     def test_hash_algorithm_instance(self, backend):  argument
29             hashes.Hash(hashes.SHA1, backend=backend)
31     def test_raises_after_finalize(self, backend):  argument
32         h = hashes.Hash(hashes.SHA1(), backend=backend)
44     def test_unsupported_hash(self, backend):  argument
46             hashes.Hash(DummyHashAlgorithm(), backend)
50     only_if=lambda backend: backend.hash_supported(hashes.SHA1()),
62     only_if=lambda backend: backend.hash_supported(hashes.SHA224()),
74     only_if=lambda backend: backend.hash_supported(hashes.SHA256()),
86     only_if=lambda backend: backend.hash_supported(hashes.SHA384()),
98     only_if=lambda backend: backend.hash_supported(hashes.SHA512()),
110     only_if=lambda backend: backend.hash_supported(hashes.MD5()),
122     only_if=lambda backend: backend.hash_supported(
133     def test_invalid_digest_size(self, backend):  argument
145     only_if=lambda backend: backend.hash_supported(
156     def test_invalid_digest_size(self, backend):  argument
175 def test_buffer_protocol_hash(backend):  argument
177     h = hashes.Hash(hashes.SHA256(), backend)