Add third party test for bitwise_count

Author: antonwolfy

dpnp/tests/third_party/cupy/binary_tests/test_elementwise.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import unittest
 
 from dpnp.tests.third_party.cupy import testing
@@ -27,6 +29,38 @@ def test_bitwise_or(self):
     def test_bitwise_xor(self):
         self.check_binary_int("bitwise_xor")
 
+    @testing.with_requires("numpy>=2.0.0")
+    @testing.for_int_dtypes(no_bool=True)
+    @testing.numpy_cupy_array_equal()
+    def test_bitwise_count(self, xp, dtype):
+        info = xp.iinfo(dtype)
+        if xp.issubdtype(dtype, xp.signedinteger):
+            a = xp.array(
+                [
+                    0,
+                    -1,
+                    1,
+                    info.min,
+                    info.min + 1,
+                    info.max,
+                    info.max - 1,
+                    info.max // 2,
+                ],
+                dtype=dtype,
+            )
+        else:
+            a = xp.array(
+                [
+                    0,
+                    1,
+                    info.max,
+                    info.max - 1,
+                    info.max // 2,
+                ],
+                dtype=dtype,
+            )
+        return xp.bitwise_count(a)
+
     def test_invert(self):
         self.check_unary_int("invert")