Fix psycopg as_string()

newrelic/hooks/database_psycopg.py

@@ -418,7 +418,7 @@ def _add_defaults(parsed_host, parsed_hostaddr, parsed_port, parsed_database):
 
 
 def wrapper_psycopg_as_string(wrapped, instance, args, kwargs):
-    def _bind_params(context, *args, **kwargs):
+    def _bind_params(context=None, *args, **kwargs):
         return context, args, kwargs
 
     context, _args, _kwargs = _bind_params(*args, **kwargs)

tests/datastore_psycopg/conftest.py

@@ -17,6 +17,8 @@
 from testing_support.fixture.event_loop import event_loop as loop
 from testing_support.fixtures import collector_agent_registration_fixture, collector_available_fixture
 
+from newrelic.common.package_version_utils import get_package_version_tuple
+
 _default_settings = {
     "package_reporting.enabled": False,  # Turn off package reporting for testing as it causes slow downs.
     "transaction_tracer.explain_threshold": 0.0,
@@ -36,6 +38,7 @@
 
 DB_MULTIPLE_SETTINGS = postgresql_settings()
 DB_SETTINGS = DB_MULTIPLE_SETTINGS[0]
+PSYCOPG_VERSION = get_package_version_tuple("psycopg")
 
 
 @pytest.fixture(scope="session", params=["sync", "async"])

tests/datastore_psycopg/test_as_string.py

@@ -12,6 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import pytest
+from conftest import PSYCOPG_VERSION
+
 try:
     from psycopg import sql
 except ImportError:
@@ -109,3 +112,12 @@ def test_as_string_10(connection):
     )
     result = q2.as_string(connection)
     assert result == 'insert into table ("foo", "bar", "baz") values (%(foo)s, %(bar)s, %(baz)s)'
+
+
+@pytest.mark.skipif(PSYCOPG_VERSION < (3, 2, 0), reason="This signature was changed in psycopg 3.2.0")
+@background_task()
+def test_as_string_11(connection):
+    ident = sql.Identifier("foo")
+    # No context provided to as_string(), should not raise an error
+    result = ident.as_string()
+    assert result == '"foo"'