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-rw-r--r--python/tests/account_test.py16
1 files changed, 16 insertions, 0 deletions
diff --git a/python/tests/account_test.py b/python/tests/account_test.py
index 4fef72c..7ee6d2b 100644
--- a/python/tests/account_test.py
+++ b/python/tests/account_test.py
@@ -98,3 +98,19 @@ class TestClass(object):
with pytest.raises(OlmVerifyError):
ed25519_verify(signing_key, message, signature)
+
+ @given(text())
+ def test_signature_verification_twice(self, message):
+ alice = Account()
+
+ signature = alice.sign(message)
+ signing_key = alice.identity_keys["ed25519"]
+
+ assert signature
+ assert signing_key
+
+ ed25519_verify(signing_key, message, signature)
+ assert signature == alice.sign(message)
+
+ ed25519_verify(signing_key, message, signature)
+ assert signature == alice.sign(message)