Attempt to better isolate this test by getting the backend name from a subprocess.

1 files changed, 27 insertions, 5 deletions

diff --git a/tests/hazmat/backends/test_openssl.py b/tests/hazmat/backends/test_openssl.py
index aa2122fb..09a7f0a5 100644
--- a/tests/hazmat/backends/test_openssl.py
+++ b/tests/hazmat/backends/test_openssl.py
@@ -13,6 +13,10 @@
 
 from __future__ import absolute_import, division, print_function
 
+import sys
+import subprocess
+import textwrap
+
 import pretend
 
 import pytest
@@ -215,11 +219,29 @@ class TestOpenSSLRandomEngine(object):
     # This must be the first test in the class so that the teardown method
     # has not (potentially) altered the default engine.
     def test_osrandom_engine_is_default(self):
-        e = backend._lib.ENGINE_get_default_RAND()
-        name = backend._lib.ENGINE_get_name(e)
-        assert name == backend._lib.Cryptography_osrandom_engine_name
-        res = backend._lib.ENGINE_free(e)
-        assert res == 1
+        engine_name = subprocess.check_output(
+            [sys.executable,
+             "-c",
+             textwrap.dedent(
+                """
+                import sys
+                from cryptography.hazmat.backends.openssl.backend import backend
+
+                e = backend._lib.ENGINE_get_default_RAND()
+                name = backend._lib.ENGINE_get_name(e)
+                sys.stdout.write(backend._ffi.string(name))
+                res = backend._lib.ENGINE_free(e)
+                assert res == 1
+                """
+             )
+            ]
+        )
+
+        osrandom_engine_name = backend._ffi.string(
+            backend._lib.Cryptography_osrandom_engine_name
+        )
+
+        assert engine_name == osrandom_engine_name
 
     def test_osrandom_sanity_check(self):
         # This test serves as a check against catastrophic failure.