test_util.py

####################################################################################################
# This file is a part of PyPartMC licensed under the GNU General Public License v3 (LICENSE file)  #
# Copyright (C) 2022 University of Illinois Urbana-Champaign                                       #
# Authors: https://github.com/open-atmos/PyPartMC/graphs/contributors                              #
####################################################################################################

import numpy as np

import PyPartMC as ppmc


class TestUtil:
    @staticmethod
    def test_pow2_above():
        # arrange
        arg = 13

        # act
        pow2 = ppmc.pow2_above(arg)

        # assert
        assert pow2 == 16

    @staticmethod
    def test_deg2rad():
        pass

    @staticmethod
    def test_sphere_vol2rad():
        # arrange
        arg = (4 / 3) * np.pi * (1e-6) ** 3

        # act
        rad = ppmc.sphere_vol2rad(arg)

        # assert
        np.testing.assert_almost_equal(1e-6, rad)

    @staticmethod
    def test_rad2diam():
        # arrange
        arg = 0.5e-6

        # act
        diam = ppmc.rad2diam(arg)

        # assert
        assert diam == 2 * arg

    @staticmethod
    def test_sphere_rad2vol():
        # arrange
        arg = 1e-6

        # act
        vol = ppmc.sphere_rad2vol(arg)

        # assert
        np.testing.assert_almost_equal(vol, (4 / 3) * np.pi * (arg) ** 3)

    @staticmethod
    def test_diam2rad():
        # arrange
        arg = 1e-6

        # act
        rad = ppmc.diam2rad(arg)

        # assert
        assert rad == arg / 2