tests: follow-up fix for test_sqlite_database_renamed (#741)

Ref: #712 (comment)

Author: blueyed

.travis.yml

@@ -22,7 +22,7 @@ jobs:
       python: 3.7
       env: TOXENV=py37-dj21-sqlite-coverage
     - python: 3.7
-      env: TOXENV=py37-dj22-sqlite-coverage
+      env: TOXENV=py37-dj22-sqlite-xdist-coverage
 
     # Explicitly test (older) pytest 4.1.
     - python: 3.7

tests/test_db_setup.py

@@ -278,7 +278,10 @@ def test_a():
 
                 assert conn_default.vendor == 'sqlite'
                 db_name = conn_default.creation._get_test_db_name()
-                if conn_default.features.can_share_in_memory_db:
+
+                # can_share_in_memory_db was removed in Django 2.1, and
+                # used in _get_test_db_name before.
+                if getattr(conn_default.features, "can_share_in_memory_db", True):
                     assert 'file:memorydb' in db_name
                 else:
                     assert db_name == ":memory:"