use a unique database name

Author: ohmayr

packages/django-google-spanner/tests/settings.py

@@ -28,8 +28,11 @@
 
 PROJECT_ID = os.getenv("GOOGLE_CLOUD_PROJECT", "emulator-test-project")
 
-# _get_test_db_name method in creation.py addes prefix of 'test_' to db name.
-DATABASE_NAME = os.getenv("DJANGO_SPANNER_DB", "django_test_db")
+# Lock a unique database name into the environment so utils.py sees the exact same name
+if "DJANGO_SPANNER_DB" not in os.environ:
+    os.environ["DJANGO_SPANNER_DB"] = f"db_{uuid.uuid4().hex[:8]}"
+
+DATABASE_NAME = os.environ["DJANGO_SPANNER_DB"]
 
 DATABASES = {
     "default": {

packages/django-google-spanner/tests/system/django_spanner/utils.py

@@ -27,7 +27,12 @@
     "GOOGLE_CLOUD_TESTS_SPANNER_INSTANCE", "spanner-django-python-systest"
 )
 PROJECT_ID = os.getenv("GOOGLE_CLOUD_PROJECT", "emulator-test-project")
-DATABASE_NAME = os.getenv("DJANGO_SPANNER_DB", "django_test_db")
+
+# Lock a unique database name into the environment so settings.py sees the exact same name
+if "DJANGO_SPANNER_DB" not in os.environ:
+    os.environ["DJANGO_SPANNER_DB"] = f"db_{uuid.uuid4().hex[:8]}"
+
+DATABASE_NAME = os.environ["DJANGO_SPANNER_DB"]
 
 
 class Config(object):