fix Sanic test

Author: fantix

requirements_dev.txt

@@ -5,8 +5,8 @@ bumpversion==0.5.3  # pyup: update minor
 wheel==0.33.0  # pyup: update minor
 cryptography==2.7  # pyup: update minor
 psycopg2-binary==2.8.1  # pyup: update minor
-sanic==19.3.1  # pyup: update minor
-aiohttp==3.6.0  # pyup: update minor
+sanic==19.3.1;python_version>="3.6"  # pyup: update minor
+aiohttp==3.6.0;python_version>="3.5.3"  # pyup: update minor
 tornado==6.0  # pyup: update minor
 async_generator==1.10  # pyup: update minor
 quart==0.10.0;python_version>="3.7"  # pyup: update minor

tests/test_sanic.py

@@ -3,6 +3,11 @@
 
 from async_generator import yield_, async_generator
 import pytest
+
+# Sanic 19.6 dropped Python 3.5 support
+if sys.version_info < (3, 6):
+    raise pytest.skip(allow_module_level=True)
+
 import sanic
 from sanic.response import text, json
 
@@ -12,8 +17,6 @@
 from .models import DB_ARGS, PG_URL
 
 _MAX_INACTIVE_CONNECTION_LIFETIME = 59.0
-pytestmark = pytest.mark.skipif(sys.version_info < (3, 6),
-                                reason="Sanic 19.6 dropped Python 3.5 support")
 
 
 def teardown_module():