Fix AM build

pandas-dev · MarcoGorelli · Jul 10, 2023 · Apr 7, 2023 · Apr 8, 2023 · Apr 8, 2023
commit 51e6d360b32b8e3c422021551fcf591e6cfc4c70
diff --git a/pandas/tests/reshape/merge/test_merge.py b/pandas/tests/reshape/merge/test_merge.py
@@ -683,7 +683,10 @@ def test_join_append_timedeltas(self, using_array_manager):
         )
         df = DataFrame(columns=list("dt"))
         msg = "The behavior of DataFrame concatenation with empty entries is deprecated"
-        with tm.assert_produces_warning(FutureWarning, match=msg):
+        warn = FutureWarning
+        if using_array_manager:
+            warn = None
+        with tm.assert_produces_warning(warn, match=msg):
             df = concat([df, d], ignore_index=True)
             result = concat([df, d], ignore_index=True)
         expected = DataFrame(