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# -*- coding: utf-8 -*- |
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import datetime as dt |
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import numpy as np |
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import pytest |
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from pytest import approx |
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from numpy.testing import assert_allclose |
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from apexpy import helpers |
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############################################################################## |
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# NOTE: whenever function outputs are tested against hard-coded numbers, # |
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# the test results (numbers) were obtained by running the code that is # |
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# tested. Therefore these tests below only check that nothing changes when # |
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# refactoring etc., and not if the results are actually correct # |
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############################################################################## |
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# ============================================================================ |
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# Test checklat |
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# ============================================================================ |
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def test_checklat_scalar(): |
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assert helpers.checklat(90) == 90 |
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assert helpers.checklat(0) == 0 |
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assert helpers.checklat(-90) == -90 |
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assert helpers.checklat(90+1e-5) == 90 |
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assert helpers.checklat(-90-1e-5) == -90 |
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assert type(helpers.checklat(0.)) == float |
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assert type(helpers.checklat(0)) == int |
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assert type(helpers.checklat(90+1e-5)) == int |
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with pytest.raises(ValueError): |
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helpers.checklat(90+1e-4) |
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with pytest.raises(ValueError): |
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helpers.checklat(-90-1e-4) |
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def test_checklat_message(): |
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with pytest.raises(ValueError) as excinfo: |
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helpers.checklat(100) |
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assert str(excinfo.value).startswith('lat must be in') |
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with pytest.raises(ValueError) as excinfo: |
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helpers.checklat(100, name='glat') |
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assert str(excinfo.value).startswith('glat') |
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def test_checklat_array(): |
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assert_allclose(helpers.checklat([-90-1e-5, -90, 0, 90, 90+1e-5]), |
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np.array([-90, -90, 0, 90, 90]), rtol=0, atol=1e-8) |
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assert type(helpers.checklat([0])) == list |
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assert type(helpers.checklat(np.array([0]))) == np.ndarray |
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with pytest.raises(ValueError): |
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helpers.checklat([-90-1e-4, -90, 0, 90, 90+1e-5]) |
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with pytest.raises(ValueError): |
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helpers.checklat([-90-1e-5, -90, 0, 90, 90+1e-4]) |
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# ============================================================================ |
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# Test getsinIm |
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# ============================================================================ |
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def test_getsinIm_scalar(): |
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assert_allclose(helpers.getsinIm(60), 0.96076892283052284) |
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assert_allclose(helpers.getsinIm(10), 0.33257924500670238) |
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assert type(helpers.getsinIm(60)) != np.ndarray |
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def test_getsinIm_1Darray(): |
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assert_allclose(helpers.getsinIm([60, 10]), |
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[0.96076892283052284, 0.33257924500670238]) |
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def test_getsinIm_2Darray(): |
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assert_allclose(helpers.getsinIm([[60, 10], [60, 10]]), |
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[[0.96076892283052284, 0.33257924500670238], |
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[0.96076892283052284, 0.33257924500670238]]) |
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# ============================================================================ |
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# Test getcosIm |
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# ============================================================================ |
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90
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def test_getcosIm_scalar(): |
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assert_allclose(helpers.getcosIm(60), 0.27735009811261463) |
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assert_allclose(helpers.getcosIm(10), 0.94307531289434765) |
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assert type(helpers.getcosIm(60)) != np.ndarray |
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def test_getcosIm_1Darray(): |
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assert_allclose(helpers.getcosIm([60, 10]), |
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[0.27735009811261463, 0.94307531289434765]) |
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def test_getcosIm_2Darray(): |
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assert_allclose(helpers.getcosIm([[60, 10], [60, 10]]), |
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[[0.27735009811261463, 0.94307531289434765], |
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[0.27735009811261463, 0.94307531289434765]]) |
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# ============================================================================ |
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# Test toYearFraction |
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# ============================================================================ |
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112
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def test_toYearFraction(): |
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assert_allclose(helpers.toYearFraction(dt.datetime(2001, 1, 1, 0, 0, 0)), |
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2001) |
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assert_allclose(helpers.toYearFraction(dt.date(2001, 1, 1)), 2001) |
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assert_allclose(helpers.toYearFraction(dt.datetime(2002, 1, 1, 0, 0, 0)), |
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2002) |
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assert_allclose(helpers.toYearFraction(dt.datetime(2005, 2, 3, 4, 5, 6)), |
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2005.090877283105) |
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assert_allclose(helpers.toYearFraction(dt.datetime(2005, 12, 11, 10, 9, 8)), |
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2005.943624682902) |
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# ============================================================================ |
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# Test gc2gdlat |
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# ============================================================================ |
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129
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def test_gc2gdlat(): |
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assert_allclose(helpers.gc2gdlat(0), 0) |
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assert_allclose(helpers.gc2gdlat(90), 90) |
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assert_allclose(helpers.gc2gdlat(30), 30.166923849507356) |
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assert_allclose(helpers.gc2gdlat(60), 60.166364190170931) |
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# ============================================================================ |
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# Test subsol |
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# ============================================================================ |
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@pytest.mark.parametrize('dtime,coord', [(dt.datetime(2005, 2, 3, 4, 5, 6), (-16.505391672592904, 122.17768157084515)), |
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(dt.datetime(2010, 12, 11, 10, 9, 8), (-23.001554595838947, 26.008999999955023)), |
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(dt.datetime(1601, 1, 1, 0, 0, 0), (-23.06239721771427, -178.90131731228584)), |
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(dt.datetime(2100, 12, 31, 23, 59, 59), (-23.021061422069053, -179.23129780639425))]) |
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def test_subsol(dtime, coord): |
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assert helpers.subsol(dtime) == approx(coord) |
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@pytest.mark.parametrize('dtime', [dt.datetime(1600, 12, 31, 23, 59, 59), dt.datetime(2101, 1, 1, 0, 0, 0)]) |
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def test_bad_subsol(dtime): |
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with pytest.raises(ValueError): |
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helpers.subsol(dtime) |
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154
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155
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if __name__ == '__main__': |
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pytest.main([__file__]) |
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aburrell /
apexpy
