fix: typo in uproot.source.xrootd.XRootDSource name (#990)

* Fix typo in `uproot.source.xrootd.XRootDSource` name

* test different handlers for xrootd

---------

Co-authored-by: Luis Antonio Obis Aparicio <luis.antonio.obis@gmail.com>
Co-authored-by: Luis Antonio Obis Aparicio <35803280+lobis@users.noreply.github.com>

src/uproot/_util.py

@@ -432,7 +432,7 @@ def file_path_to_source_class(file_path, options):
     elif parsed_url.scheme.upper() == "ROOT":
         out = options["xrootd_handler"]
         if out is None:
-            out = uproot.source.root.XRootDSource
+            out = uproot.source.xrootd.XRootDSource
         else:
             warnings.warn(
                 f"""In version 5.2.0, the 'xrootd_handler' argument will be removed from 'uproot.open'. Use

tests/test_0692_fsspec.py

@@ -63,11 +63,15 @@ def test_open_fsspec_s3():
 
 @pytest.mark.network
 @pytest.mark.xrootd
-def test_open_fsspec_xrootd():
+@pytest.mark.parametrize(
+    "handler",
+    [uproot.source.fsspec.FSSpecSource, uproot.source.xrootd.XRootDSource, None],
+)
+def test_open_fsspec_xrootd(handler):
     pytest.importorskip("XRootD")
     with uproot.open(
         "root://eospublic.cern.ch//eos/root-eos/cms_opendata_2012_nanoaod/Run2012B_DoubleMuParked.root",
-        handler=uproot.source.fsspec.FSSpecSource,
+        handler=handler,
     ) as f:
         data = f["Events/run"].array(library="np", entry_stop=20)
         assert len(data) == 20