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90 lines
3.2 KiB
PythOn
90 lines
3.2 KiB
PythOn
10 years ago
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import unittest
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import numpy as np
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from numpy import cos, pi
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from numpy.testing import assert_array_almost_equal
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from wafo.padua import (padua_points, testfunct, padua_fit,
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padua_fit2,
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padua_cubature, padua_val)
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class PaduaTestCase(unittest.TestCase):
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def test_padua_points_degree0(self):
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pad = padua_points(0)
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expected = [[-1],[-1]]
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assert_array_almost_equal(pad, expected, 15)
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def test_padua_points_degree1(self):
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pad = padua_points(1)
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expected = [cos(np.r_[0,1,1]*pi),
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cos(np.r_[1,0,2]*pi/2)]
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assert_array_almost_equal(pad, expected, 15)
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def test_padua_points_degree2(self):
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pad = padua_points(2, domain=[0,1,0,2])
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expected = [(cos(np.r_[0,0,1,1,2,2]*pi/2)+1)/2,
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cos(np.r_[1,3,0,2,1,3]*pi/3)+1]
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assert_array_almost_equal(pad, expected, 15)
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def test_testfunct(self):
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vals = [testfunct(0, 0, id) for id in range(12)]
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expected = [7.664205912849231e-01, 0.7071067811865476, 0,
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1.6487212707001282, 1.9287498479639178e-22, 1.0,
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1.0, 1.0, 1.0, 0.0, 1.0, 0.0]
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assert_array_almost_equal(vals, expected, 15)
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def test_padua_fit_even_degree(self):
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points = padua_points(10)
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C0f, abs_error = padua_fit(points, testfunct, 6)
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expected = np.zeros((11, 11))
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expected[0,0] = 1;
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assert_array_almost_equal(C0f, expected, 15)
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def test_padua_fit_odd_degree(self):
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points = padua_points(9)
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C0f, abs_error = padua_fit(points, testfunct, 6)
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expected = np.zeros((10, 10))
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expected[0,0] = 1;
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assert_array_almost_equal(C0f, expected, 15)
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def test_padua_fit_odd_degree2(self):
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points = padua_points(9)
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C0f, abs_error = padua_fit2(points, testfunct, 6)
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expected = np.zeros((10, 10))
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expected[0,0] = 1;
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assert_array_almost_equal(C0f, expected, 15)
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def test_padua_cubature(self):
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domain = [0,1,0,1]
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points = padua_points(500, domain)
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C0f, abs_error = padua_fit(points, testfunct, 0)
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val = padua_cubature(C0f, domain)
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expected = 4.06969589491556e-01
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assert_array_almost_equal(val, expected, 15)
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def test_padua_val_unordered(self):
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domain = [0,1,0,1]
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points = padua_points(20, domain)
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C0f, abs_error = padua_fit(points, testfunct, 0)
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X = [0,0.5,1]
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val = padua_val(X, X, C0f, domain)
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expected = [7.664205912849228e-01, 3.2621734202884815e-01,
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3.587865112678535e-02]
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assert_array_almost_equal(val, expected, 14)
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def test_padua_val_grid(self):
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domain = [0,1,0,1]
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a, b, c, d = domain
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points = padua_points(21, domain)
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C0f, abs_error = padua_fit(points, testfunct, 0)
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X1 = np.linspace(a, b, 2)
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X2 = np.linspace(c, d, 2)
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val = padua_val(X1, X2, C0f,domain, use_meshgrid=True);
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expected = [[7.664205912849229e-01,1.0757071952145181e-01],
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[2.703371615911344e-01,3.5734971024838565e-02]]
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assert_array_almost_equal(val, expected, 14)
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