Handling warnings in pytest

[vlad-perevezentsev]

This PR suggests getting rid of use -p warnings flag in pytest configuration and handling warnings separately.
This will help you see new warnings in internal CI logs and during development

• Have you provided a meaningful PR description?
• Have you added a test, reproducer or referred to issue with a reproducer?
• Have you tested your changes locally for CPU and GPU devices?
• Have you made sure that new changes do not introduce compiler warnings?
• Have you checked performance impact of proposed changes?
• If this PR is a work in progress, are you filing the PR as a draft?

[github-actions]

View rendered docs @ https://intelpython.github.io/dpnp/index.html

[antonwolfy]

pytest -s run on Gen9 reports 255 warnings:

=================================================================================================================================== warnings summary ===================================================================================================================================
tests/test_arraycreation.py: 250 warnings
  /localdisk/work/antonvol/soft/miniconda3/envs/dpnp_py39_ext/lib/python3.9/site-packages/dpctl/tensor/_type_utils.py:456: DeprecationWarning: finfo() dtype cannot be None. This behavior will raise an error in the future. (Deprecated in NumPy 1.25)
    self._finfo = np.finfo(dtype)

tests/test_sycl_queue.py::test_from_dlpack_with_dpt[complex64-level_zero:gpu:0]
  /localdisk/work/antonvol/soft/miniconda3/envs/dpnp_py39_ext/lib/python3.9/site-packages/numpy/testing/_private/utils.py:722: RuntimeWarning: invalid value encountered in equal
    func=lambda xy: xy == +inf,

tests/test_sycl_queue.py::test_from_dlpack_with_dpt[complex64-level_zero:gpu:0]
  /localdisk/work/antonvol/soft/miniconda3/envs/dpnp_py39_ext/lib/python3.9/site-packages/numpy/testing/_private/utils.py:725: RuntimeWarning: invalid value encountered in equal
    func=lambda xy: xy == -inf,

tests/third_party/cupy/core_tests/test_ndarray_math.py::TestRoundHalfway_param_0_{decimals=-3}::test_round_halfway_uint
  /localdisk/work/antonvol/soft/miniconda3/envs/dpnp_py39_ext/lib/python3.9/site-packages/dpctl/tensor/_ctors.py:646: DeprecationWarning: NumPy will stop allowing conversion of out-of-bound Python integers to integer arrays.  The conversion of 1000 to uint8 will fail in the future.
  For the old behavior, usually:
      np.array(value).astype(dtype)
  will give the desired result (the cast overflows).
    np.asarray(obj, dtype=dtype),

tests/third_party/cupy/core_tests/test_ndarray_math.py::TestRoundHalfway_param_0_{decimals=-3}::test_round_halfway_uint
  /localdisk/work/antonvol/code/dpnp/tests/third_party/cupy/core_tests/test_ndarray_math.py:108: DeprecationWarning: NumPy will stop allowing conversion of out-of-bound Python integers to integer arrays.  The conversion of 1000 to uint8 will fail in the future.
  For the old behavior, usually:
      np.array(value).astype(dtype)
  will give the desired result (the cast overflows).
    a *= xp.array(scale, dtype=dtype)

tests/third_party/cupy/creation_tests/test_ranges.py::TestRanges::test_linspace_float_underflow
  /localdisk/work/antonvol/soft/miniconda3/envs/dpnp_py39_ext/lib/python3.9/site-packages/numpy/core/function_base.py:158: RuntimeWarning: overflow encountered in multiply
    y *= step

Is it expected to have warning on Gen9?

[antonwolfy]

There are still warnings on PVC:

=========================================================================================== warnings summary ===========================================================================================
tests/test_sycl_queue.py::test_from_dlpack_with_dpt[complex64-level_zero:gpu:0]
tests/test_sycl_queue.py::test_from_dlpack_with_dpt[complex64-level_zero:gpu:1]
  /home/gta/miniconda3/envs/dpnp_dev/lib/python3.10/site-packages/numpy/testing/_private/utils.py:722: RuntimeWarning: invalid value encountered in equal
    func=lambda xy: xy == +inf,

tests/test_sycl_queue.py::test_from_dlpack_with_dpt[complex64-level_zero:gpu:0]
tests/test_sycl_queue.py::test_from_dlpack_with_dpt[complex64-level_zero:gpu:1]
  /home/gta/miniconda3/envs/dpnp_dev/lib/python3.10/site-packages/numpy/testing/_private/utils.py:725: RuntimeWarning: invalid value encountered in equal
    func=lambda xy: xy == -inf,

[antonwolfy]

Thank you @vlad-perevezentsev