Skip test_postgres_terminate_connection for older PostgreSQL versions

tests/test_postgresql.py

@@ -1,7 +1,10 @@
 """All tests for pytest-postgresql."""
+import decimal
+
 import psycopg2
 import pytest
 
+from tests.conftest import POSTGRESQL_VERSION
 
 MAKE_Q = "CREATE TABLE test (id serial PRIMARY KEY, num integer, data varchar);"
 SELECT_Q = "SELECT * FROM test;"
@@ -56,6 +59,10 @@ def test_rand_postgres_port(postgresql_rand):
     assert postgresql_rand.status == psycopg2.extensions.STATUS_READY
 
 
+@pytest.mark.skipif(
+    decimal.Decimal(POSTGRESQL_VERSION) < 10,
+    reason="Test query not supported in those postgresql versions, and soon will not be supported."
+)
 @pytest.mark.parametrize('_', range(2))
 def test_postgres_terminate_connection(
         postgresql_version, _):