TST: GH50347 create test for groupby sum of boolean values. (#50488)

Author: Daquisu

pandas/tests/groupby/test_groupby.py

@@ -2828,3 +2828,13 @@ def test_groupby_index_name_in_index_content(val_in, index, val_out):
     result = series.to_frame().groupby("blah").sum()
     expected = expected.to_frame()
     tm.assert_frame_equal(result, expected)
+
+
+@pytest.mark.parametrize("n", [1, 10, 32, 100, 1000])
+def test_sum_of_booleans(n):
+    # GH 50347
+    df = DataFrame({"groupby_col": 1, "bool": [True] * n})
+    df["bool"] = df["bool"].eq(True)
+    result = df.groupby("groupby_col").sum()
+    expected = DataFrame({"bool": [n]}, index=Index([1], name="groupby_col"))
+    tm.assert_frame_equal(result, expected)