TST : Add comprehensive unit tests for tm.shares_memory utility function (GH#55372)

pandas/tests/util/test_shares_memory.py

@@ -30,3 +30,17 @@ def test_shares_memory_string():
 
     obj = pd.array(["a", "b"], dtype=pd.ArrowDtype(pa.string()))
     assert tm.shares_memory(obj, obj)
+
+
+def test_shares_memory_numpy():
+    arr = np.arange(10)
+    view = arr[:5]
+    assert tm.shares_memory(arr, view)
+    arr2 = np.arange(10)
+    assert not tm.shares_memory(arr, arr2)
+
+
+def test_shares_memory_rangeindex():
+    idx = pd.RangeIndex(10)
+    arr = np.arange(10)
+    assert not tm.shares_memory(idx, arr)