port test from pandas-dev#34312

Author: jbrockmendel

pandas/tests/frame/test_arithmetic.py

@@ -1499,3 +1499,18 @@ def test_pow_nan_with_zero():
 
     result = left["A"] ** right["A"]
     tm.assert_series_equal(result, expected["A"])
+
+
+def test_dataframe_series_extension_dtypes():
+    # https://github.com/pandas-dev/pandas/issues/34311
+    df = pd.DataFrame(np.random.randint(0, 100, (10, 3)), columns=["a", "b", "c"])
+    ser = pd.Series([1, 2, 3], index=["a", "b", "c"])
+
+    expected = df.to_numpy("int64") + ser.to_numpy("int64").reshape(-1, 3)
+    expected = pd.DataFrame(expected, columns=df.columns, dtype="Int64")
+
+    df_ea = df.astype("Int64")
+    result = df_ea + ser
+    tm.assert_frame_equal(result, expected)
+    result = df_ea + ser.astype("Int64")
+    tm.assert_frame_equal(result, expected)