qualify asyncpg API tests for python 3.8

Getting
TypeError: object MagicMock can't be used in 'await' expression
for Python 3.7 and earlier.  this test is not needed
on all platforms it's confirming that two methods
are present.

Change-Id: If918add023c98c062ea0c1cd132a999647a2d35f

1 files changed, 6 insertions, 0 deletions

diff --git a/lib/sqlalchemy/testing/requirements.py b/lib/sqlalchemy/testing/requirements.py
index 08acbd2d2..4cc431bb7 100644
--- a/lib/sqlalchemy/testing/requirements.py
+++ b/lib/sqlalchemy/testing/requirements.py
@@ -1224,6 +1224,12 @@ class SuiteRequirements(Requirements):
         return exclusions.only_if(check)
 
     @property
+    def python38(self):
+        return exclusions.only_if(
+            lambda: util.py38, "Python 3.8 or above required"
+        )
+
+    @property
     def cpython(self):
         return exclusions.only_if(
             lambda: util.cpython, "cPython interpreter needed"