/usr/share/pyshared/quantities/tests/test_arithmetic.py is in python-quantities 0.10.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 | # -*- coding: utf-8 -*-
import operator as op
from functools import partial
import sys
import numpy as np
from .. import units as pq
from ..quantity import Quantity
from .common import TestCase
if sys.version.startswith('3'):
long = int
def rand(dtype, *args):
if np.dtype(dtype).kind == 'c':
return dtype(
10*np.random.rand(*args)+10j*np.random.rand(*args),
)
else:
return dtype(10*np.random.rand(*args))
def check(f, *args, **kwargs):
new = partial(f, *args)
new.__name__ = f.__name__
new.__module__ = f.__module__
try:
new = kwargs['fails_if'](new)
except KeyError:
pass
desc = [f.__name__]
for arg in args:
try:
desc.append(arg[0].dtype.name)
except AttributeError:
desc.append(arg[0].__class__.__name__)
except (IndexError, TypeError):
try:
desc.append(arg.dtype.name)
except AttributeError:
pass
c = arg.__class__.__name__
if c != desc[-1]:
desc.append(c)
new.description = '_'.join(desc)
return (new, )
class iter_dtypes(object):
def __init__(self):
self._i = 1
self._typeDict = np.typeDict.copy()
self._typeDict[17] = int
self._typeDict[18] = long
self._typeDict[19] = float
self._typeDict[20] = complex
def __iter__(self):
return self
def __next__(self):
if self._i > 20:
raise StopIteration
i = self._i
self._i += 1
return self._typeDict[i]
def next(self):
return self.__next__()
def get_dtypes():
return list(iter_dtypes())
class iter_types(object):
def __init__(self, dtype):
self._index = -1
self._dtype = dtype
def __iter__(self):
return self
def __next__(self):
self._index += 1
if self._index > 2:
raise StopIteration
if self._index > 0 and self._dtype in (int, long, float, complex):
raise StopIteration
if self._index == 0:
return rand(self._dtype)
if self._index == 1:
return rand(self._dtype, 5).tolist()
if self._index == 2:
return rand(self._dtype, 5)
def next(self):
return self.__next__()
class TestDTypes(TestCase):
def check_mul(self, m1, m2):
self.assertQuantityEqual(pq.m*m2, Quantity(m2, 'm'))
q1 = Quantity(m1, 'm')
q2 = Quantity(m2, 's')
a1 = np.asarray(m1)
a2 = np.asarray(m2)
self.assertQuantityEqual(q1*m2, Quantity(a1*a2, 'm'))
self.assertQuantityEqual(q1*q2, Quantity(a1*a2, 'm*s'))
def check_rmul(self, m1, m2):
self.assertQuantityEqual(m1*pq.m, Quantity(m1, 'm'))
q2 = Quantity(m2, 's')
a1 = np.asarray(m1)
a2 = np.asarray(m2)
self.assertQuantityEqual(m1*q2, Quantity(a1*a2, 's'))
def test_mul(self):
dtypes = get_dtypes()
for i in get_dtypes()[::3]:
for j in get_dtypes()[::3]:
for x in iter_types(i):
for y in iter_types(j):
self.check_mul(x, y)
self.check_rmul(x, y)
dtypes.pop(0)
def test_mixed_addition(self):
self.assertQuantityEqual(1*pq.ft + 1*pq.m, 4.280839895 * pq.ft)
self.assertQuantityEqual(1*pq.ft + pq.m, 4.280839895 * pq.ft)
self.assertQuantityEqual(pq.ft + 1*pq.m, 4.280839895 * pq.ft)
self.assertQuantityEqual(pq.ft + pq.m, 4.280839895 * pq.ft)
self.assertQuantityEqual(op.iadd(1*pq.ft, 1*pq.m), 4.280839895 * pq.ft)
self.assertRaises(ValueError, lambda: 10*pq.J + 3*pq.m)
self.assertRaises(ValueError, lambda: op.iadd(10*pq.J, 3*pq.m))
def test_mod(self):
self.assertQuantityEqual(10*pq.m % (3*pq.m), 1*pq.m)
self.assertQuantityEqual(
10*pq.m % (3*pq.m).rescale('ft'),
10*pq.m % (3*pq.m)
)
self.assertRaises(ValueError, lambda: 10*pq.J % (3*pq.m))
def test_imod(self):
x = 10*pq.m
x %= 3*pq.m
self.assertQuantityEqual(x, 1*pq.m)
x = 10*pq.m
x %= (3*pq.m).rescale('ft')
self.assertQuantityEqual(x, 10*pq.m % (3*pq.m))
self.assertRaises(ValueError, lambda: op.imod(10*pq.J, 3*pq.m))
def test_fmod(self):
self.assertQuantityEqual(np.fmod(10*pq.m, (3*pq.m)), 1*pq.m)
self.assertRaises(ValueError, np.fmod, 10*pq.J, 3*pq.m)
def test_remainder(self):
self.assertQuantityEqual(np.remainder(10*pq.m, (3*pq.m)), 1*pq.m)
self.assertRaises(ValueError, np.remainder, 10*pq.J, 3*pq.m)
def test_negative(self):
self.assertQuantityEqual(
-pq.m,
Quantity(-1, 'm')
)
self.assertQuantityEqual(
-Quantity(5, 'm'),
Quantity(-5, 'm')
)
self.assertQuantityEqual(
-Quantity(-5.0, 'm'),
Quantity(5.0, 'm')
)
def test_addition(self):
self.assertQuantityEqual(
pq.eV + pq.eV,
2*pq.eV
)
self.assertQuantityEqual(
pq.eV + -pq.eV,
0*pq.eV
)
self.assertQuantityEqual(
pq.eV + 5*pq.eV,
6*pq.eV
)
self.assertQuantityEqual(
5*pq.eV + pq.eV,
6*pq.eV
)
self.assertQuantityEqual(
5*pq.eV + 6*pq.eV,
11*pq.eV
)
self.assertQuantityEqual(
pq.rem + [1, 2, 3]*pq.rem,
[2, 3, 4]*pq.rem
)
self.assertQuantityEqual(
[1, 2, 3]*pq.rem + pq.rem,
[2, 3, 4]*pq.rem
)
self.assertQuantityEqual(
5*pq.rem + [1, 2, 3]*pq.rem,
[6, 7, 8]*pq.rem
)
self.assertQuantityEqual(
[1, 2, 3]*pq.rem + 5*pq.rem,
[6, 7, 8]*pq.rem
)
self.assertQuantityEqual(
[1, 2, 3]*pq.hp + [1, 2, 3]*pq.hp,
[2, 4, 6]*pq.hp
)
self.assertRaises(ValueError, op.add, pq.kPa, pq.lb)
self.assertRaises(ValueError, op.add, pq.kPa, 10)
self.assertRaises(ValueError, op.add, 1*pq.kPa, 5*pq.lb)
self.assertRaises(ValueError, op.add, 1*pq.kPa, pq.lb)
self.assertRaises(ValueError, op.add, 1*pq.kPa, 5)
self.assertRaises(ValueError, op.add, [1, 2, 3]*pq.kPa, [1, 2, 3]*pq.lb)
self.assertRaises(ValueError, op.add, [1, 2, 3]*pq.kPa, 5*pq.lb)
self.assertRaises(ValueError, op.add, [1, 2, 3]*pq.kPa, pq.lb)
self.assertRaises(ValueError, op.add, [1, 2, 3]*pq.kPa, 5)
def test_in_place_addition(self):
x = 1*pq.m
x += pq.m
self.assertQuantityEqual(x, pq.m+pq.m)
x = 1*pq.m
x += -pq.m
self.assertQuantityEqual(x, 0*pq.m)
x = [1, 2, 3, 4]*pq.m
x += pq.m
self.assertQuantityEqual(x, [2, 3, 4, 5]*pq.m)
x = [1, 2, 3, 4]*pq.m
x += x
self.assertQuantityEqual(x, [2, 4, 6, 8]*pq.m)
x = [1, 2, 3, 4]*pq.m
x[:2] += pq.m
self.assertQuantityEqual(x, [2, 3, 3, 4]*pq.m)
x = [1, 2, 3, 4]*pq.m
x[:2] += -pq.m
self.assertQuantityEqual(x, [0, 1, 3, 4]*pq.m)
x = [1, 2, 3, 4]*pq.m
x[:2] += [1, 2]*pq.m
self.assertQuantityEqual(x, [2, 4, 3, 4]*pq.m)
x = [1, 2, 3, 4]*pq.m
x[::2] += [1, 2]*pq.m
self.assertQuantityEqual(x, [2, 2, 5, 4]*pq.m)
self.assertRaises(ValueError, op.iadd, 1*pq.m, 1)
self.assertRaises(ValueError, op.iadd, 1*pq.m, pq.J)
self.assertRaises(ValueError, op.iadd, 1*pq.m, 5*pq.J)
self.assertRaises(ValueError, op.iadd, [1, 2, 3]*pq.m, 1)
self.assertRaises(ValueError, op.iadd, [1, 2, 3]*pq.m, pq.J)
self.assertRaises(ValueError, op.iadd, [1, 2, 3]*pq.m, 5*pq.J)
def test_subtraction(self):
self.assertQuantityEqual(
pq.eV - pq.eV,
0*pq.eV
)
self.assertQuantityEqual(
5*pq.eV - pq.eV,
4*pq.eV
)
self.assertQuantityEqual(
pq.eV - 4*pq.eV,
-3*pq.eV
)
self.assertQuantityEqual(
pq.rem - [1, 2, 3]*pq.rem,
[0, -1, -2]*pq.rem
)
self.assertQuantityEqual(
[1, 2, 3]*pq.rem - pq.rem,
[0, 1, 2]*pq.rem
)
self.assertQuantityEqual(
5*pq.rem - [1, 2, 3]*pq.rem,
[4, 3, 2]*pq.rem
)
self.assertQuantityEqual(
[1, 2, 3]*pq.rem - 5*pq.rem,
[-4, -3, -2]*pq.rem
)
self.assertQuantityEqual(
[3, 3, 3]*pq.hp - [1, 2, 3]*pq.hp,
[2, 1, 0]*pq.hp
)
self.assertRaises(ValueError, op.sub, pq.kPa, pq.lb)
self.assertRaises(ValueError, op.sub, pq.kPa, 10)
self.assertRaises(ValueError, op.sub, 1*pq.kPa, 5*pq.lb)
self.assertRaises(ValueError, op.sub, 1*pq.kPa, pq.lb)
self.assertRaises(ValueError, op.sub, 1*pq.kPa, 5)
self.assertRaises(ValueError, op.sub, [1, 2, 3]*pq.kPa, [1, 2, 3]*pq.lb)
self.assertRaises(ValueError, op.sub, [1, 2, 3]*pq.kPa, 5*pq.lb)
self.assertRaises(ValueError, op.sub, [1, 2, 3]*pq.kPa, pq.lb)
self.assertRaises(ValueError, op.sub, [1, 2, 3]*pq.kPa, 5)
def test_in_place_subtraction(self):
x = 1*pq.m
x -= pq.m
self.assertQuantityEqual(x, 0*pq.m)
x = 1*pq.m
x -= -pq.m
self.assertQuantityEqual(x, 2*pq.m)
x = [1, 2, 3, 4]*pq.m
x -= pq.m
self.assertQuantityEqual(x, [0, 1, 2, 3]*pq.m)
x = [1, 2, 3, 4]*pq.m
x -= [1, 1, 1, 1]*pq.m
self.assertQuantityEqual(x, [0, 1, 2, 3]*pq.m)
x = [1, 2, 3, 4]*pq.m
x[:2] -= pq.m
self.assertQuantityEqual(x, [0, 1, 3, 4]*pq.m)
x = [1, 2, 3, 4]*pq.m
x[:2] -= -pq.m
self.assertQuantityEqual(x, [2, 3, 3, 4]*pq.m)
x = [1, 2, 3, 4]*pq.m
x[:2] -= [1, 2]*pq.m
self.assertQuantityEqual(x, [0, 0, 3, 4]*pq.m)
x = [1, 2, 3, 4]*pq.m
x[::2] -= [1, 2]*pq.m
self.assertQuantityEqual(x, [0, 2, 1, 4]*pq.m)
self.assertRaises(ValueError, op.isub, 1*pq.m, 1)
self.assertRaises(ValueError, op.isub, 1*pq.m, pq.J)
self.assertRaises(ValueError, op.isub, 1*pq.m, 5*pq.J)
self.assertRaises(ValueError, op.isub, [1, 2, 3]*pq.m, 1)
self.assertRaises(ValueError, op.isub, [1, 2, 3]*pq.m, pq.J)
self.assertRaises(ValueError, op.isub, [1, 2, 3]*pq.m, 5*pq.J)
def test_powering(self):
# test raising a quantity to a power
self.assertQuantityEqual((5.5 * pq.cm)**5, (5.5**5) * (pq.cm**5))
# must also work with compound units
self.assertQuantityEqual((5.5 * pq.J)**5, (5.5**5) * (pq.J**5))
# does powering work with arrays?
self.assertQuantityEqual(
(np.array([1, 2, 3, 4, 5]) * pq.kg)**3,
np.array([1, 8, 27, 64, 125]) * pq.kg**3
)
def q_pow_r(q1, q2):
return q1 ** q2
self.assertRaises(ValueError, q_pow_r, 10.0 * pq.m, 10 * pq.J)
self.assertRaises(ValueError, q_pow_r, 10.0 * pq.m, np.array([1, 2, 3]))
self.assertQuantityEqual( (10 * pq.J) ** (2 * pq.J/pq.J) , 100 * pq.J**2 )
# test rpow here
self.assertRaises(ValueError, q_pow_r, 10.0, 10 * pq.J)
self.assertQuantityEqual(10**(2*pq.J/pq.J), 100)
def ipow(q1, q2):
q1 -= q2
self.assertRaises(ValueError, ipow, 1*pq.m, [1, 2])
|