/usr/lib/python2.7/dist-packages/numpy/polynomial/tests/test_polyutils.py is in python-numpy 1:1.12.1-3.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 | """Tests for polyutils module.
"""
from __future__ import division, absolute_import, print_function
import numpy as np
import numpy.polynomial.polyutils as pu
from numpy.testing import (
TestCase, assert_almost_equal, assert_raises,
assert_equal, assert_, run_module_suite)
class TestMisc(TestCase):
def test_trimseq(self):
for i in range(5):
tgt = [1]
res = pu.trimseq([1] + [0]*5)
assert_equal(res, tgt)
def test_as_series(self):
# check exceptions
assert_raises(ValueError, pu.as_series, [[]])
assert_raises(ValueError, pu.as_series, [[[1, 2]]])
assert_raises(ValueError, pu.as_series, [[1], ['a']])
# check common types
types = ['i', 'd', 'O']
for i in range(len(types)):
for j in range(i):
ci = np.ones(1, types[i])
cj = np.ones(1, types[j])
[resi, resj] = pu.as_series([ci, cj])
assert_(resi.dtype.char == resj.dtype.char)
assert_(resj.dtype.char == types[i])
def test_trimcoef(self):
coef = [2, -1, 1, 0]
# Test exceptions
assert_raises(ValueError, pu.trimcoef, coef, -1)
# Test results
assert_equal(pu.trimcoef(coef), coef[:-1])
assert_equal(pu.trimcoef(coef, 1), coef[:-3])
assert_equal(pu.trimcoef(coef, 2), [0])
class TestDomain(TestCase):
def test_getdomain(self):
# test for real values
x = [1, 10, 3, -1]
tgt = [-1, 10]
res = pu.getdomain(x)
assert_almost_equal(res, tgt)
# test for complex values
x = [1 + 1j, 1 - 1j, 0, 2]
tgt = [-1j, 2 + 1j]
res = pu.getdomain(x)
assert_almost_equal(res, tgt)
def test_mapdomain(self):
# test for real values
dom1 = [0, 4]
dom2 = [1, 3]
tgt = dom2
res = pu. mapdomain(dom1, dom1, dom2)
assert_almost_equal(res, tgt)
# test for complex values
dom1 = [0 - 1j, 2 + 1j]
dom2 = [-2, 2]
tgt = dom2
x = dom1
res = pu.mapdomain(x, dom1, dom2)
assert_almost_equal(res, tgt)
# test for multidimensional arrays
dom1 = [0, 4]
dom2 = [1, 3]
tgt = np.array([dom2, dom2])
x = np.array([dom1, dom1])
res = pu.mapdomain(x, dom1, dom2)
assert_almost_equal(res, tgt)
# test that subtypes are preserved.
dom1 = [0, 4]
dom2 = [1, 3]
x = np.matrix([dom1, dom1])
res = pu.mapdomain(x, dom1, dom2)
assert_(isinstance(res, np.matrix))
def test_mapparms(self):
# test for real values
dom1 = [0, 4]
dom2 = [1, 3]
tgt = [1, .5]
res = pu. mapparms(dom1, dom2)
assert_almost_equal(res, tgt)
# test for complex values
dom1 = [0 - 1j, 2 + 1j]
dom2 = [-2, 2]
tgt = [-1 + 1j, 1 - 1j]
res = pu.mapparms(dom1, dom2)
assert_almost_equal(res, tgt)
if __name__ == "__main__":
run_module_suite()
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