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# -*- coding: utf-8 -*- |
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"""Test the apexpy.fortranapex class |
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Notes |
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----- |
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Whenever function outputs are tested against hard-coded numbers, the test |
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results (numbers) were obtained by running the code that is tested. Therefore, |
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these tests below only check that nothing changes when refactoring, etc., and |
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not if the results are actually correct. |
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These results are expected to change when IGRF is updated. |
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""" |
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from numpy.testing import assert_allclose |
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from importlib import resources |
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import pytest |
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import apexpy |
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from apexpy import fortranapex as fa |
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class TestFortranApex(object): |
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"""Test class for the Python-wrapped Fortran functions.""" |
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def setup_method(self): |
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"""Initialize each test.""" |
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datafile = str(resources.path(apexpy, 'apexsh.dat').__enter__()) |
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fa.loadapxsh(datafile, 2000) |
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# Set the inputs |
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self.lat = 60 |
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self.lon = 15 |
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self.height = 100 |
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self.refh = 300 |
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self.vecflg = 1 |
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self.precision = 1e-10 |
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# Set the output values |
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self.glat = 50.979549407958984 |
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self.glon = -66.16891479492188 |
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self.error = 2.8316469524725107e-06 |
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self.qlat = 56.531288146972656 |
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self.qlon = 94.1068344116211 |
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self.mlat = 55.94841766357422 |
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self.mlon = 94.1068344116211 |
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self.f1 = [1.079783, 0.10027137] |
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self.f2 = [-0.24546318, 0.90718889] |
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self.fmag = 1.0041800737380981 |
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self.d1 = [0.9495701, 0.25693053, 0.09049474] |
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self.d2 = [0.10011087, -1.0780545, -0.33892432] |
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self.d3 = [0.00865356, 0.27327004, -0.8666646] |
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self.dmag = 1.100391149520874 |
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self.e1 = [1.0269295, 0.08382964, 0.03668632] |
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self.e2 = [0.24740215, -0.82374191, -0.25726584] |
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self.e3 = [0.01047826, 0.33089194, -1.04941] |
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self.out = None |
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self.test_out = None |
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def teardown_method(self): |
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"""Clean environment after each test.""" |
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del self.lat, self.lon, self.height, self.refh, self.vecflg |
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del self.qlat, self.qlon, self.mlat, self.mlon, self.f1, self.f2 |
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del self.fmag, self.d1, self.d2, self.d3, self.dmag, self.e1 |
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del self.e2, self.e3, self.precision, self.glat, self.glon, self.error |
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del self.out, self.test_out |
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def run_test_evaluation(self, rtol=1e-5, atol=1e-5): |
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"""Run the evaluation of the test results. |
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Parameters |
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---------- |
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rtol : float |
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Relative tolerance, default value based on old code's precision |
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(default=1e-5) |
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atol : float |
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Absolute tolerance, default value based on old code's precision |
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(default=1e-5) |
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""" |
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assert self.out is not None, "No results to test" |
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assert self.test_out is not None, "No 'truth' results provided" |
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assert len(self.out) == len(self.test_out), "Mismatched outputs" |
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for i, out_val in enumerate(self.out): |
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assert_allclose(out_val, self.test_out[i], rtol=rtol, atol=atol) |
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return |
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def test_apxg2q(self): |
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"""Test fortran apex geographic to quasi-dipole.""" |
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# Get the output |
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self.out = fa.apxg2q(self.lat, self.lon, self.height, self.vecflg) |
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# Test the output |
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self.test_out = (self.qlat, self.qlon, self.f1, self.f2, self.fmag) |
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self.run_test_evaluation() |
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return |
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def test_apxg2all(self): |
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"""Test fortran apex geographic to all outputs.""" |
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# Get the output |
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self.out = fa.apxg2all(self.lat, self.lon, self.height, self.refh, |
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self.vecflg) |
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# Test the output |
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self.test_out = (self.qlat, self.qlon, self.mlat, self.mlon, self.f1, |
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self.f2, self.fmag, self.d1, self.d2, self.d3, |
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self.dmag, self.e1, self.e2, self.e3) |
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self.run_test_evaluation() |
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return |
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def test_apxq2g(self): |
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""" Test fortran quasi-dipole to geographic.""" |
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# Get the output |
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self.out = fa.apxq2g(self.lat, self.lon, self.height, self.precision) |
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# Test the output |
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self.test_out = (self.glat, self.glon, self.error) |
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self.run_test_evaluation() |
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return |
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@pytest.mark.parametrize("lat", [0, 30, 60, 89]) |
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@pytest.mark.parametrize("lon", [-179, -90, 0, 90, 179]) |
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def test_g2q2d(self, lat, lon): |
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""" Test fortran geographic to quasi-dipole and back again. |
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Parameters |
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---------- |
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lat : int or float |
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Latitude in degrees N |
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lon : int or float |
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Longitude in degrees E |
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""" |
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self.out = fa.apxg2q(lat, lon, self.height, 0) |
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self.test_out = fa.apxq2g(self.out[0], self.out[1], self.height, |
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self.precision) |
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# Test the results againt the initial input |
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assert_allclose(self.test_out[0], lat, atol=0.01) |
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assert_allclose(self.test_out[1], lon, atol=0.01) |
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def test_apxq2g_lowprecision(self): |
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"""Test low precision error value.""" |
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self.out = fa.apxq2g(self.lat, self.lon, self.height, -1) |
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# Test the output |
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self.test_out = (51.00891876220703, -66.11973571777344, -9999.0) |
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self.run_test_evaluation() |
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return |
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aburrell /
apexpy
