Add regression test

Closes sympy/sympy#23287
skirpichev · Mar 25, 2022 · 2abd66b · 2abd66b
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diff --git a/diofant/tests/core/test_arit.py b/diofant/tests/core/test_arit.py
@@ -952,6 +952,9 @@ def test_Pow_is_integer():
 
     assert ((-1)**k).is_integer
 
+    # issue sympy/sympy#23287
+    assert (x**2/2).is_integer is None
+
     x = Symbol('x', extended_real=True, integer=False)
     assert (x**2).is_integer is None  # issue sympy/sympy#8641
 

diff --git a/docs/release/notes-0.14.rst b/docs/release/notes-0.14.rst
@@ -72,3 +72,4 @@ These Sympy issues also were addressed:
 * :sympyissue:`18492`: Limit of Piecewise function - NotImplementedError: Don't know how to calculate the mrv
 * :sympyissue:`23266`: Regression(?) in 1.10 for limits
 * :sympyissue:`7391`: Limits for expressions with undetermined functions give wrong results
+* :sympyissue:`23287`: Regression in is_integer for Mul of Pow