Skip this hanging test

Author: mroeschke

pandas/tests/window/test_cython_aggregations.py

@@ -5,6 +5,10 @@
 import pytest
 
 import pandas._libs.window.aggregations as window_aggregations
+from pandas.compat import (
+    is_ci_environment,
+    is_platform_windows,
+)
 
 from pandas import Series
 import pandas._testing as tm
@@ -86,6 +90,10 @@ def test_rolling_aggregation_boundary_consistency(rolling_aggregation):
     tm.assert_equal(expected, result)
 
 
+@pytest.mark.skipif(
+    is_ci_environment() and is_platform_windows(),
+    reason="Causes MemoryError on Windows",
+)
 def test_rolling_aggregation_with_unused_elements(rolling_aggregation):
     # GH-45647
     minp, width = 0, 5  # width at least 4 for kurt