lsp tests validation - #944

 tests_root = get_config_value("tests_root", "")
 # Validate tests_root directory exists if provided
 if tests_root:
-    # Resolve path relative to config file directory or current working directory
-    if cfg_file:
-        base_dir = cfg_file.parent
-    else:
-        base_dir = Path.cwd()
-    tests_root_path = (base_dir / tests_root).resolve()
+    tr_path = Path(tests_root)
+    if not tr_path.is_absolute():
+        base_dir = cfg_file.parent if cfg_file else Path.cwd()
+        tr_path = (base_dir / tr_path)
+    tests_root_path = tr_path.resolve()
     if not tests_root_path.exists() or not tests_root_path.is_dir():
         return {
             "status": "error",
             "message": f"Invalid 'tests_root': directory does not exist at {tests_root_path}",
             "field_errors": {
                 "tests_root": f"Directory does not exist at {tests_root_path}",
             },
         }

-def get_config_value(key: str, default: str = "") -> str:
+def get_config_value(key: str, default=None):
     if isinstance(cfg, dict):
         return cfg.get(key, default)
     return getattr(cfg, key, default)

+formatter_cfg = get_config_value("formatter_cmds", None)
+if formatter_cfg in ("disabled", "", False):
+    formatter_cfg = None
 setup_info = VsCodeSetupInfo(
     module_root=get_config_value("module_root", ""),
     tests_root=tests_root,
     test_framework=get_config_value("test_framework", "pytest"),
-    formatter=get_formatter_cmds(get_config_value("formatter_cmds", "disabled")),
+    formatter=get_formatter_cmds(formatter_cfg),
 )