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-rw-r--r--tests/hazmat/bindings/test_openssl.py5
1 files changed, 5 insertions, 0 deletions
diff --git a/tests/hazmat/bindings/test_openssl.py b/tests/hazmat/bindings/test_openssl.py
index 35eb7e8d..c476390b 100644
--- a/tests/hazmat/bindings/test_openssl.py
+++ b/tests/hazmat/bindings/test_openssl.py
@@ -96,3 +96,8 @@ class TestOpenSSL(object):
# unlocked
assert lock.acquire(False)
lock.release()
+
+ def test_add_engine_more_than_once(self):
+ b = Binding()
+ res = b.lib.Cryptography_add_osrandom_engine()
+ assert res == 2