1 files changed, 17 insertions, 6 deletions
diff --git a/Lib/asyncio/test_utils.py b/Lib/asyncio/test_utils.py
index f417204..116b3fc 100644
--- a/Lib/asyncio/test_utils.py
+++ b/Lib/asyncio/test_utils.py
@@ -42,6 +42,21 @@ else:
     from socket import socketpair  # pragma: no cover
 
 
+def data_file(filename):
+    if hasattr(support, 'TEST_HOME_DIR'):
+        fullname = os.path.join(support.TEST_HOME_DIR, filename)
+        if os.path.isfile(fullname):
+            return fullname
+    fullname = os.path.join(os.path.dirname(os.__file__), 'test', filename)
+    if os.path.isfile(fullname):
+        return fullname
+    raise FileNotFoundError(filename)
+
+
+ONLYCERT = data_file('ssl_cert.pem')
+ONLYKEY = data_file('ssl_key.pem')
+
+
 def dummy_ssl_context():
     if ssl is None:
         return None
@@ -114,12 +129,8 @@ class SSLWSGIServerMixin:
         # contains the ssl key and certificate files) differs
         # between the stdlib and stand-alone asyncio.
         # Prefer our own if we can find it.
-        here = os.path.join(os.path.dirname(__file__), '..', 'tests')
-        if not os.path.isdir(here):
-            here = os.path.join(os.path.dirname(os.__file__),
-                                'test', 'test_asyncio')
-        keyfile = os.path.join(here, 'ssl_key.pem')
-        certfile = os.path.join(here, 'ssl_cert.pem')
+        keyfile = ONLYKEY
+        certfile = ONLYCERT
         context = ssl.SSLContext()
         context.load_cert_chain(certfile, keyfile)