add series test

Author: nsarang

pandas/tests/reshape/merge/test_merge.py

@@ -2149,6 +2149,8 @@ def test_merge_index_types(index):
         (None, None, None, True, True, "B"),
         (None, ["outer", "inner"], None, False, True, "B"),
         (None, None, ["outer", "inner"], True, False, "B"),
+        (["outer", "inner"], None, None, False, False, ("B", "C")),
+        (None, None, ["outer", "inner"], True, False, ("B", "C")),
         (["outer", "inner"], None, None, False, False, None),
         (None, None, None, True, True, None),
         (None, ["outer", "inner"], None, False, True, None),
@@ -2167,7 +2169,7 @@ def test_merge_series(on, left_on, right_on, left_index, right_index, nm):
         name=nm,
     )
     expected = DataFrame(
-        {"A": [2, 4], "B": [1, 3]},
+        {"A": [2, 4], nm: [1, 3]},
         index=MultiIndex.from_product([["a", "b"], [1]], names=["outer", "inner"]),
     )
     if nm is not None: