patch psutil virtual memory for test suite in CI

tests/conftest.py

@@ -3,6 +3,7 @@
 import uuid
 from collections.abc import Generator
 from pathlib import PosixPath
+from typing import NamedTuple
 
 import attrs
 import pytest
@@ -32,6 +33,29 @@
 collect_ignore = ["setup.py"]
 
 
+@pytest.fixture(autouse=True)
+def virtual_memory(mocker):
+    class VirtualMemory(NamedTuple):
+        total: int
+        available: int
+        percent: int
+        used: int
+        free: int
+
+    return mocker.patch(
+        "psutil.virtual_memory",
+        return_value=VirtualMemory(
+            total=1073741824,
+            available=5368709120,
+            # prevent dumping of smaller batches to db in process_udf_outputs
+            # we want to avoid this due to tests running concurrently (xdist)
+            percent=50,
+            used=5368709120,
+            free=5368709120,
+        ),
+    )
+
+
 @pytest.fixture(scope="session")
 def monkeypatch_session() -> Generator[MonkeyPatch, None, None]:
     """