Spaces:
Sleeping
Sleeping
File size: 8,521 Bytes
dc2106c |
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 |
import pytest
import os
import numpy as np
from numpy.testing import (
assert_, assert_equal, assert_array_equal, assert_array_almost_equal,
assert_raises, _assert_valid_refcount,
)
class TestRegression:
def test_poly1d(self):
# Ticket #28
assert_equal(np.poly1d([1]) - np.poly1d([1, 0]),
np.poly1d([-1, 1]))
def test_cov_parameters(self):
# Ticket #91
x = np.random.random((3, 3))
y = x.copy()
np.cov(x, rowvar=True)
np.cov(y, rowvar=False)
assert_array_equal(x, y)
def test_mem_digitize(self):
# Ticket #95
for i in range(100):
np.digitize([1, 2, 3, 4], [1, 3])
np.digitize([0, 1, 2, 3, 4], [1, 3])
def test_unique_zero_sized(self):
# Ticket #205
assert_array_equal([], np.unique(np.array([])))
def test_mem_vectorise(self):
# Ticket #325
vt = np.vectorize(lambda *args: args)
vt(np.zeros((1, 2, 1)), np.zeros((2, 1, 1)), np.zeros((1, 1, 2)))
vt(np.zeros((1, 2, 1)), np.zeros((2, 1, 1)), np.zeros((1,
1, 2)), np.zeros((2, 2)))
def test_mgrid_single_element(self):
# Ticket #339
assert_array_equal(np.mgrid[0:0:1j], [0])
assert_array_equal(np.mgrid[0:0], [])
def test_refcount_vectorize(self):
# Ticket #378
def p(x, y):
return 123
v = np.vectorize(p)
_assert_valid_refcount(v)
def test_poly1d_nan_roots(self):
# Ticket #396
p = np.poly1d([np.nan, np.nan, 1], r=False)
assert_raises(np.linalg.LinAlgError, getattr, p, "r")
def test_mem_polymul(self):
# Ticket #448
np.polymul([], [1.])
def test_mem_string_concat(self):
# Ticket #469
x = np.array([])
np.append(x, 'asdasd\tasdasd')
def test_poly_div(self):
# Ticket #553
u = np.poly1d([1, 2, 3])
v = np.poly1d([1, 2, 3, 4, 5])
q, r = np.polydiv(u, v)
assert_equal(q*v + r, u)
def test_poly_eq(self):
# Ticket #554
x = np.poly1d([1, 2, 3])
y = np.poly1d([3, 4])
assert_(x != y)
assert_(x == x)
def test_polyfit_build(self):
# Ticket #628
ref = [-1.06123820e-06, 5.70886914e-04, -1.13822012e-01,
9.95368241e+00, -3.14526520e+02]
x = [90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103,
104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115,
116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 129,
130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141,
146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157,
158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169,
170, 171, 172, 173, 174, 175, 176]
y = [9.0, 3.0, 7.0, 4.0, 4.0, 8.0, 6.0, 11.0, 9.0, 8.0, 11.0, 5.0,
6.0, 5.0, 9.0, 8.0, 6.0, 10.0, 6.0, 10.0, 7.0, 6.0, 6.0, 6.0,
13.0, 4.0, 9.0, 11.0, 4.0, 5.0, 8.0, 5.0, 7.0, 7.0, 6.0, 12.0,
7.0, 7.0, 9.0, 4.0, 12.0, 6.0, 6.0, 4.0, 3.0, 9.0, 8.0, 8.0,
6.0, 7.0, 9.0, 10.0, 6.0, 8.0, 4.0, 7.0, 7.0, 10.0, 8.0, 8.0,
6.0, 3.0, 8.0, 4.0, 5.0, 7.0, 8.0, 6.0, 6.0, 4.0, 12.0, 9.0,
8.0, 8.0, 8.0, 6.0, 7.0, 4.0, 4.0, 5.0, 7.0]
tested = np.polyfit(x, y, 4)
assert_array_almost_equal(ref, tested)
def test_polydiv_type(self):
# Make polydiv work for complex types
msg = "Wrong type, should be complex"
x = np.ones(3, dtype=complex)
q, r = np.polydiv(x, x)
assert_(q.dtype == complex, msg)
msg = "Wrong type, should be float"
x = np.ones(3, dtype=int)
q, r = np.polydiv(x, x)
assert_(q.dtype == float, msg)
def test_histogramdd_too_many_bins(self):
# Ticket 928.
assert_raises(ValueError, np.histogramdd, np.ones((1, 10)), bins=2**10)
def test_polyint_type(self):
# Ticket #944
msg = "Wrong type, should be complex"
x = np.ones(3, dtype=complex)
assert_(np.polyint(x).dtype == complex, msg)
msg = "Wrong type, should be float"
x = np.ones(3, dtype=int)
assert_(np.polyint(x).dtype == float, msg)
def test_ndenumerate_crash(self):
# Ticket 1140
# Shouldn't crash:
list(np.ndenumerate(np.array([[]])))
def test_asfarray_none(self):
# Test for changeset r5065
assert_array_equal(np.array([np.nan]), np.asfarray([None]))
def test_large_fancy_indexing(self):
# Large enough to fail on 64-bit.
nbits = np.dtype(np.intp).itemsize * 8
thesize = int((2**nbits)**(1.0/5.0)+1)
def dp():
n = 3
a = np.ones((n,)*5)
i = np.random.randint(0, n, size=thesize)
a[np.ix_(i, i, i, i, i)] = 0
def dp2():
n = 3
a = np.ones((n,)*5)
i = np.random.randint(0, n, size=thesize)
a[np.ix_(i, i, i, i, i)]
assert_raises(ValueError, dp)
assert_raises(ValueError, dp2)
def test_void_coercion(self):
dt = np.dtype([('a', 'f4'), ('b', 'i4')])
x = np.zeros((1,), dt)
assert_(np.r_[x, x].dtype == dt)
def test_who_with_0dim_array(self):
# ticket #1243
import os
import sys
oldstdout = sys.stdout
sys.stdout = open(os.devnull, 'w')
try:
try:
np.who({'foo': np.array(1)})
except Exception:
raise AssertionError("ticket #1243")
finally:
sys.stdout.close()
sys.stdout = oldstdout
def test_include_dirs(self):
# As a sanity check, just test that get_include
# includes something reasonable. Somewhat
# related to ticket #1405.
include_dirs = [np.get_include()]
for path in include_dirs:
assert_(isinstance(path, str))
assert_(path != '')
def test_polyder_return_type(self):
# Ticket #1249
assert_(isinstance(np.polyder(np.poly1d([1]), 0), np.poly1d))
assert_(isinstance(np.polyder([1], 0), np.ndarray))
assert_(isinstance(np.polyder(np.poly1d([1]), 1), np.poly1d))
assert_(isinstance(np.polyder([1], 1), np.ndarray))
def test_append_fields_dtype_list(self):
# Ticket #1676
from numpy.lib.recfunctions import append_fields
base = np.array([1, 2, 3], dtype=np.int32)
names = ['a', 'b', 'c']
data = np.eye(3).astype(np.int32)
dlist = [np.float64, np.int32, np.int32]
try:
append_fields(base, names, data, dlist)
except Exception:
raise AssertionError()
def test_loadtxt_fields_subarrays(self):
# For ticket #1936
from io import StringIO
dt = [("a", 'u1', 2), ("b", 'u1', 2)]
x = np.loadtxt(StringIO("0 1 2 3"), dtype=dt)
assert_equal(x, np.array([((0, 1), (2, 3))], dtype=dt))
dt = [("a", [("a", 'u1', (1, 3)), ("b", 'u1')])]
x = np.loadtxt(StringIO("0 1 2 3"), dtype=dt)
assert_equal(x, np.array([(((0, 1, 2), 3),)], dtype=dt))
dt = [("a", 'u1', (2, 2))]
x = np.loadtxt(StringIO("0 1 2 3"), dtype=dt)
assert_equal(x, np.array([(((0, 1), (2, 3)),)], dtype=dt))
dt = [("a", 'u1', (2, 3, 2))]
x = np.loadtxt(StringIO("0 1 2 3 4 5 6 7 8 9 10 11"), dtype=dt)
data = [((((0, 1), (2, 3), (4, 5)), ((6, 7), (8, 9), (10, 11))),)]
assert_equal(x, np.array(data, dtype=dt))
def test_nansum_with_boolean(self):
# gh-2978
a = np.zeros(2, dtype=bool)
try:
np.nansum(a)
except Exception:
raise AssertionError()
def test_py3_compat(self):
# gh-2561
# Test if the oldstyle class test is bypassed in python3
class C():
"""Old-style class in python2, normal class in python3"""
pass
out = open(os.devnull, 'w')
try:
np.info(C(), output=out)
except AttributeError:
raise AssertionError()
finally:
out.close()
|