Added test and updated README to ensure SHA1

1 files changed, 20 insertions, 0 deletions

diff --git a/tests/test_itsdangerous/test_serializer.py b/tests/test_itsdangerous/test_serializer.py
index df2fa92..46b4893 100644
--- a/tests/test_itsdangerous/test_serializer.py
+++ b/tests/test_itsdangerous/test_serializer.py
@@ -144,3 +144,23 @@ class TestSerializer(object):
             fallback_signers=[{"digest_method": hashlib.sha512}],
         )
         assert fallback_serializer.loads(value) == [1, 2, 3]
+
+    def test_digests(self):
+        default_value = Serializer(
+            secret_key='dev key',
+            salt='dev salt',
+            signer_kwargs={}
+        ).dumps([42])
+        sha1_value = Serializer(
+            secret_key='dev key',
+            salt='dev salt',
+            signer_kwargs={'digest_method': hashlib.sha1}
+        ).dumps([42])
+        sha512_value = Serializer(
+            secret_key='dev key',
+            salt='dev salt',
+            signer_kwargs={'digest_method': hashlib.sha512}
+        ).dumps([42])
+        assert default_value == sha1_value
+        assert sha1_value == '[42].-9cNi0CxsSB3hZPNCe9a2eEs1ZM'
+        assert sha512_value == '[42].MKCz_0nXQqv7wKpfHZcRtJRmpT2T5uvs9YQsJEhJimqxc9bCLxG31QzS5uC8OVBI1i6jyOLAFNoKaF5ckO9L5Q'