feat: add Columnar Engine, Auto-Columnarization, and Vector Assist op…

conftest.py

@@ -0,0 +1,62 @@
+"""Global pytest configuration for langchain-google-alloydb-pg-python."""
+
+import os
+import pytest
+
+def pytest_collection_modifyitems(config, items):
+    """Skip tests that require GCP environment variables if PROJECT_ID is not set."""
+    if os.environ.get("PROJECT_ID"):
+        return
+
+    skip_gcp = pytest.mark.skip(reason="Missing required GCP environment variables")
+
+    # List of test files/modules that require live GCP / AlloyDB connection
+    gcp_test_files = {
+        "test_async_chatmessagehistory.py",
+        "test_async_checkpoint.py",
+        "test_async_loader.py",
+        "test_async_vectorstore.py",
+        "test_async_vectorstore_from_methods.py",
+        "test_async_vectorstore_index.py",
+        "test_async_vectorstore_search.py",
+        "test_chatmessagehistory.py",
+        "test_checkpoint.py",
+        "test_embeddings.py",
+        "test_engine.py",
+        "test_loader.py",
+        "test_model_manager.py",
+        "test_pgvector_migrator.py",
+        "test_standard_test_suite.py",
+        "test_vectorstore.py",
+        "test_vectorstore_embeddings.py",
+        "test_vectorstore_from_methods.py",
+        "test_vectorstore_index.py",
+        "test_vectorstore_search.py",
+    }
+
+    for item in items:
+        # Check if the test is from one of the GCP test files (supporting pytest 8/9 item.path)
+        if hasattr(item, "path"):
+            fspath_name = item.path.name
+        else:
+            fspath_name = getattr(getattr(item, "fspath", None), "basename", "")
+        if fspath_name in gcp_test_files:
+            item.add_marker(skip_gcp)
+        # Also skip tests with 'integration' or 'live' in their name/nodeid, or requiring 'engine' fixture
+        nodeid = getattr(item, "nodeid", "")
+        if (
+            "integration" in nodeid.lower()
+            or "live" in nodeid.lower()
+        ):
+            item.add_marker(skip_gcp)
+        elif "engine" in getattr(item, "fixturenames", []):
+            fixtureinfo = getattr(item, "_fixtureinfo", None)
+            is_local_fixture = False
+            if fixtureinfo:
+                fixturedefs = fixtureinfo.name2fixturedefs.get("engine", [])
+                if fixturedefs and "conftest" not in fixturedefs[-1].func.__module__:
+                    is_local_fixture = True
+
+            if not is_local_fixture:
+                item.add_marker(skip_gcp)
+