TST: add missing loc label indexing test (#38880)

Author: vangorade

pandas/tests/indexing/test_loc.py

@@ -56,9 +56,13 @@ def test_loc_getitem_label_out_of_range(self):
         self.check_result("loc", 20, typs=["floats"], axes=0, fails=KeyError)
 
     def test_loc_getitem_label_list(self):
-        # TODO: test something here?
         # list of labels
-        pass
+        self.check_result(
+            "loc", [0, 1, 2], typs=["ints", "uints", "floats"], fails=KeyError
+        )
+        self.check_result(
+            "loc", [1, 3.0, "A"], typs=["ints", "uints", "floats"], fails=KeyError
+        )
 
     def test_loc_getitem_label_list_with_missing(self):
         self.check_result("loc", [0, 1, 2], typs=["empty"], fails=KeyError)