Add nbdssl support

tests/conftest.py

@@ -0,0 +1,37 @@
+# Copyright 2026 Cloudbase Solutions Srl
+# All Rights Reserved.
+
+"""Session-scoped lab fixtures for live vSphere tests."""
+
+from __future__ import annotations
+
+import os
+from collections.abc import Iterator
+
+import pytest
+
+from tests.integration.base import (
+    LabEnv,
+    create_lab_vm,
+    destroy_lab_vm,
+    ensure_vddk_library_path,
+    require_vddk,
+)
+
+
+@pytest.fixture(scope="session")
+def lab() -> Iterator[LabEnv]:
+    """Create one temporary lab VM for the whole pytest session."""
+    os.environ.pop("LD_PRELOAD", None)
+    ensure_vddk_library_path()
+    env = create_lab_vm()
+    try:
+        yield env
+    finally:
+        destroy_lab_vm(env)
+
+
+@pytest.fixture(scope="session")
+def vddk() -> None:
+    """Skip VDDK-backed tests when ``libvixDiskLib`` cannot be loaded."""
+    require_vddk()