chore: correct skip backup tests env variable (googleapis#753)

ansh0l · asthamohta · commit b286389cb668 · 2022-06-29T18:59:41.000+05:30
diff --git a/noxfile.py b/noxfile.py
@@ -271,9 +271,9 @@ def system(session, database_dialect):
     install_systemtest_dependencies(session, "-c", constraints_path)
 
     # If POSTGRESQL tests and Emulator, skip the tests
-    if(os.environ.get("SPANNER_EMULATOR_HOST")):
+    if os.environ.get("SPANNER_EMULATOR_HOST") and database_dialect == "POSTGRESQL":
         session.skip("Postgresql is not supported by Emulator yet.")
-        
+
     # Run py.test against the system tests.
     if system_test_exists:
         session.run(
diff --git a/tests/system/_helpers.py b/tests/system/_helpers.py
@@ -31,7 +31,7 @@
 INSTANCE_ID = os.environ.get(INSTANCE_ID_ENVVAR, INSTANCE_ID_DEFAULT)
 
 SKIP_BACKUP_TESTS_ENVVAR = "SKIP_BACKUP_TESTS"
-SKIP_BACKUP_TESTS = True  # os.getenv(SKIP_BACKUP_TESTS_ENVVAR) == True
+SKIP_BACKUP_TESTS = os.getenv(SKIP_BACKUP_TESTS_ENVVAR) is not None
 
 INSTANCE_OPERATION_TIMEOUT_IN_SECONDS = int(
     os.getenv("SPANNER_INSTANCE_OPERATION_TIMEOUT_IN_SECONDS", 560)
