81 lines
2.8 KiB
Python
81 lines
2.8 KiB
Python
""" module to test interpolate_wrapper.py
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"""
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from __future__ import division, print_function, absolute_import
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from numpy import arange, allclose, ones, isnan
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import numpy as np
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from numpy.testing import (assert_, assert_allclose)
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from scipy._lib._numpy_compat import suppress_warnings
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# functionality to be tested
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from scipy.interpolate.interpolate_wrapper import (linear, logarithmic,
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block_average_above, nearest)
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class Test(object):
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def assertAllclose(self, x, y, rtol=1.0e-5):
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for i, xi in enumerate(x):
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assert_(allclose(xi, y[i], rtol) or (isnan(xi) and isnan(y[i])))
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def test_nearest(self):
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N = 5
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x = arange(N)
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y = arange(N)
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with suppress_warnings() as sup:
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sup.filter(DeprecationWarning, "`nearest` is deprecated")
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assert_allclose(y, nearest(x, y, x+.1))
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assert_allclose(y, nearest(x, y, x-.1))
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def test_linear(self):
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N = 3000.
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x = arange(N)
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y = arange(N)
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new_x = arange(N)+0.5
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with suppress_warnings() as sup:
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sup.filter(DeprecationWarning, "`linear` is deprecated")
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new_y = linear(x, y, new_x)
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assert_allclose(new_y[:5], [0.5, 1.5, 2.5, 3.5, 4.5])
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def test_block_average_above(self):
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N = 3000
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x = arange(N, dtype=float)
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y = arange(N, dtype=float)
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new_x = arange(N // 2) * 2
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with suppress_warnings() as sup:
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sup.filter(DeprecationWarning, "`block_average_above` is deprecated")
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new_y = block_average_above(x, y, new_x)
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assert_allclose(new_y[:5], [0.0, 0.5, 2.5, 4.5, 6.5])
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def test_linear2(self):
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N = 3000
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x = arange(N, dtype=float)
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y = ones((100,N)) * arange(N)
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new_x = arange(N) + 0.5
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with suppress_warnings() as sup:
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sup.filter(DeprecationWarning, "`linear` is deprecated")
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new_y = linear(x, y, new_x)
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assert_allclose(new_y[:5,:5],
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[[0.5, 1.5, 2.5, 3.5, 4.5],
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[0.5, 1.5, 2.5, 3.5, 4.5],
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[0.5, 1.5, 2.5, 3.5, 4.5],
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[0.5, 1.5, 2.5, 3.5, 4.5],
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[0.5, 1.5, 2.5, 3.5, 4.5]])
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def test_logarithmic(self):
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N = 4000.
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x = arange(N)
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y = arange(N)
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new_x = arange(N)+0.5
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with suppress_warnings() as sup:
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sup.filter(DeprecationWarning, "`logarithmic` is deprecated")
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new_y = logarithmic(x, y, new_x)
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correct_y = [np.NaN, 1.41421356, 2.44948974, 3.46410162, 4.47213595]
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assert_allclose(new_y[:5], correct_y)
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def runTest(self):
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test_list = [name for name in dir(self) if name.find('test_') == 0]
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for test_name in test_list:
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exec("self.%s()" % test_name)
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