/
test_structured.py
749 lines (658 loc) · 29.4 KB
/
test_structured.py
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
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
# Licensed under a 3-clause BSD style license - see LICENSE.rst
"""
Test Structured units and quantities.
"""
import copy
import numpy as np
import numpy.lib.recfunctions as rfn
import pytest
from numpy.testing import assert_array_equal
from astropy import units as u
from astropy.tests.helper import check_pickling_recovery, pickle_protocol # noqa: F401
from astropy.units import Quantity, StructuredUnit, Unit, UnitBase
from astropy.units.quantity import _structured_unit_like_dtype
from astropy.utils.masked import Masked
class StructuredTestBase:
@classmethod
def setup_class(self):
self.pv_dtype = np.dtype([("p", "f8"), ("v", "f8")])
self.pv_t_dtype = np.dtype([("pv", self.pv_dtype), ("t", "f8")])
self.p_unit = u.km
self.v_unit = u.km / u.s
self.t_unit = u.s
self.pv_dtype = np.dtype([("p", "f8"), ("v", "f8")])
self.pv_t_dtype = np.dtype([("pv", self.pv_dtype), ("t", "f8")])
self.pv = np.array([(1.0, 0.25), (2.0, 0.5), (3.0, 0.75)], self.pv_dtype)
self.pv_t = np.array(
[
((4.0, 2.5), 0.0),
((5.0, 5.0), 1.0),
((6.0, 7.5), 2.0),
],
self.pv_t_dtype,
)
class StructuredTestBaseWithUnits(StructuredTestBase):
@classmethod
def setup_class(self):
super().setup_class()
self.pv_unit = StructuredUnit((self.p_unit, self.v_unit), ("p", "v"))
self.pv_t_unit = StructuredUnit((self.pv_unit, self.t_unit), ("pv", "t"))
class TestStructuredUnitBasics(StructuredTestBase):
def test_initialization_and_keying(self):
su = StructuredUnit((self.p_unit, self.v_unit), ("p", "v"))
assert su["p"] is self.p_unit
assert su["v"] is self.v_unit
su2 = StructuredUnit((su, self.t_unit), ("pv", "t"))
assert isinstance(su2["pv"], StructuredUnit)
assert su2["pv"]["p"] is self.p_unit
assert su2["pv"]["v"] is self.v_unit
assert su2["t"] is self.t_unit
assert su2["pv"] == su
su3 = StructuredUnit(("AU", "AU/day"), ("p", "v"))
assert isinstance(su3["p"], UnitBase)
assert isinstance(su3["v"], UnitBase)
su4 = StructuredUnit("AU, AU/day", ("p", "v"))
assert su4["p"] == u.AU
assert su4["v"] == u.AU / u.day
su5 = StructuredUnit(("AU", "AU/day"))
assert su5.field_names == ("f0", "f1")
assert su5["f0"] == u.AU
assert su5["f1"] == u.AU / u.day
def test_recursive_initialization(self):
su = StructuredUnit(
((self.p_unit, self.v_unit), self.t_unit), (("p", "v"), "t")
)
assert isinstance(su["pv"], StructuredUnit)
assert su["pv"]["p"] is self.p_unit
assert su["pv"]["v"] is self.v_unit
assert su["t"] is self.t_unit
su2 = StructuredUnit(
((self.p_unit, self.v_unit), self.t_unit), (["p_v", ("p", "v")], "t")
)
assert isinstance(su2["p_v"], StructuredUnit)
assert su2["p_v"]["p"] is self.p_unit
assert su2["p_v"]["v"] is self.v_unit
assert su2["t"] is self.t_unit
su3 = StructuredUnit((("AU", "AU/day"), "yr"), (["p_v", ("p", "v")], "t"))
assert isinstance(su3["p_v"], StructuredUnit)
assert su3["p_v"]["p"] == u.AU
assert su3["p_v"]["v"] == u.AU / u.day
assert su3["t"] == u.yr
su4 = StructuredUnit("(AU, AU/day), yr", (("p", "v"), "t"))
assert isinstance(su4["pv"], StructuredUnit)
assert su4["pv"]["p"] == u.AU
assert su4["pv"]["v"] == u.AU / u.day
assert su4["t"] == u.yr
def test_extreme_recursive_initialization(self):
su = StructuredUnit(
"(yr,(AU,AU/day,(km,(day,day))),m)",
("t", ("p", "v", ("h", ("d1", "d2"))), "l"),
)
assert su.field_names == (
't', ['pvhd1d2',
('p', 'v',
['hd1d2',
('h',
['d1d2',
('d1', 'd2')])])],
'l',
) # fmt: skip
@pytest.mark.parametrize(
"names, invalid",
[
[("t", ["p", "v"]), "['p', 'v']"],
[("t", ["pv", "p", "v"]), "['pv', 'p', 'v']"],
[("t", ["pv", ["p", "v"]]), "['pv', ['p', 'v']"],
[("t", ()), "()"],
[("t", ("p", None)), "None"],
[("t", ["pv", ("p", "")]), "''"],
],
)
def test_initialization_names_invalid_list_errors(self, names, invalid):
with pytest.raises(ValueError) as exc:
StructuredUnit("(yr,(AU,AU/day)", names)
assert f"invalid entry {invalid}" in str(exc)
def test_looks_like_unit(self):
su = StructuredUnit((self.p_unit, self.v_unit), ("p", "v"))
assert Unit(su) is su
def test_initialize_with_float_dtype(self):
su = StructuredUnit(("AU", "AU/d"), self.pv_dtype)
assert isinstance(su["p"], UnitBase)
assert isinstance(su["v"], UnitBase)
assert su["p"] == u.AU
assert su["v"] == u.AU / u.day
su = StructuredUnit((("km", "km/s"), "yr"), self.pv_t_dtype)
assert isinstance(su["pv"], StructuredUnit)
assert isinstance(su["pv"]["p"], UnitBase)
assert isinstance(su["t"], UnitBase)
assert su["pv"]["v"] == u.km / u.s
su = StructuredUnit("(km, km/s), yr", self.pv_t_dtype)
assert isinstance(su["pv"], StructuredUnit)
assert isinstance(su["pv"]["p"], UnitBase)
assert isinstance(su["t"], UnitBase)
assert su["pv"]["v"] == u.km / u.s
def test_initialize_with_structured_unit_for_names(self):
su = StructuredUnit(("AU", "AU/d"), names=("p", "v"))
su2 = StructuredUnit(("km", "km/s"), names=su)
assert su2.field_names == ("p", "v")
assert su2["p"] == u.km
assert su2["v"] == u.km / u.s
def test_initialize_single_field(self):
su = StructuredUnit("AU", "p")
assert isinstance(su, StructuredUnit)
assert isinstance(su["p"], UnitBase)
assert su["p"] == u.AU
su = StructuredUnit("AU")
assert isinstance(su, StructuredUnit)
assert isinstance(su["f0"], UnitBase)
assert su["f0"] == u.AU
def test_equality(self):
su = StructuredUnit(("AU", "AU/d"), self.pv_dtype)
assert su == StructuredUnit(("AU", "AU/d"), self.pv_dtype)
assert su != StructuredUnit(("m", "AU/d"), self.pv_dtype)
# Names should be ignored.
assert su == StructuredUnit(("AU", "AU/d"))
assert su == StructuredUnit(("AU", "AU/d"), names=("q", "w"))
assert su != StructuredUnit(("m", "m/s"))
def test_parsing(self):
su = Unit("AU, AU/d")
assert isinstance(su, StructuredUnit)
assert isinstance(su["f0"], UnitBase)
assert isinstance(su["f1"], UnitBase)
assert su["f0"] == u.AU
assert su["f1"] == u.AU / u.day
su2 = Unit("AU, AU/d, yr")
assert isinstance(su2, StructuredUnit)
assert su2 == StructuredUnit(("AU", "AU/d", "yr"))
su2a = Unit("(AU, AU/d, yr)")
assert isinstance(su2a, StructuredUnit)
assert su2a == su2
su3 = Unit("(km, km/s), yr")
assert isinstance(su3, StructuredUnit)
assert su3 == StructuredUnit((("km", "km/s"), "yr"))
su4 = Unit("km,")
assert isinstance(su4, StructuredUnit)
assert su4 == StructuredUnit((u.km,))
su5 = Unit("(m,s),")
assert isinstance(su5, StructuredUnit)
assert su5 == StructuredUnit(((u.m, u.s),))
ldbody_unit = Unit("Msun, 0.5rad^2, (au, au/day)")
assert ldbody_unit == StructuredUnit(
(u.Msun, Unit(u.rad**2 / 2), (u.AU, u.AU / u.day))
)
def test_to_string(self):
su = StructuredUnit((u.km, u.km / u.s))
latex_str = r"$(\mathrm{km}, \mathrm{\frac{km}{s}})$"
assert su.to_string(format="latex") == latex_str
latex_str = r"$(\mathrm{km}, \mathrm{km\,s^{-1}})$"
assert su.to_string(format="latex_inline") == latex_str
def test_str(self):
su = StructuredUnit(((u.km, u.km / u.s), u.yr))
assert str(su) == "((km, km / s), yr)"
assert Unit(str(su)) == su
def test_repr(self):
su = StructuredUnit(((u.km, u.km / u.s), u.yr))
assert repr(su) == 'Unit("((km, km / s), yr)")'
assert eval(repr(su)) == su
class TestStructuredUnitsCopyPickle(StructuredTestBaseWithUnits):
def test_copy(self):
su_copy = copy.copy(self.pv_t_unit)
assert su_copy is not self.pv_t_unit
assert su_copy == self.pv_t_unit
assert su_copy._units is self.pv_t_unit._units
def test_deepcopy(self):
su_copy = copy.deepcopy(self.pv_t_unit)
assert su_copy is not self.pv_t_unit
assert su_copy == self.pv_t_unit
assert su_copy._units is not self.pv_t_unit._units
def test_pickle(self, pickle_protocol): # noqa: F811
check_pickling_recovery(self.pv_t_unit, pickle_protocol)
class TestStructuredUnitAsMapping(StructuredTestBaseWithUnits):
def test_len(self):
assert len(self.pv_unit) == 2
assert len(self.pv_t_unit) == 2
def test_keys(self):
slv = list(self.pv_t_unit.keys())
assert slv == ["pv", "t"]
def test_values(self):
values = self.pv_t_unit.values()
assert values == (self.pv_unit, self.t_unit)
def test_field_names(self):
field_names = self.pv_t_unit.field_names
assert isinstance(field_names, tuple)
assert field_names == (["pv", ("p", "v")], "t")
@pytest.mark.parametrize("iterable", [list, set])
def test_as_iterable(self, iterable):
sl = iterable(self.pv_unit)
assert isinstance(sl, iterable)
assert sl == iterable(["p", "v"])
def test_as_dict(self):
sd = dict(self.pv_t_unit)
assert sd == {"pv": self.pv_unit, "t": self.t_unit}
def test_contains(self):
assert "p" in self.pv_unit
assert "v" in self.pv_unit
assert "t" not in self.pv_unit
def test_setitem_fails(self):
with pytest.raises(TypeError, match="item assignment"):
self.pv_t_unit["t"] = u.Gyr
class TestStructuredUnitMethods(StructuredTestBaseWithUnits):
def test_physical_type_id(self):
pv_ptid = self.pv_unit._get_physical_type_id()
assert len(pv_ptid) == 2
assert pv_ptid.dtype.names == ("p", "v")
p_ptid = self.pv_unit["p"]._get_physical_type_id()
v_ptid = self.pv_unit["v"]._get_physical_type_id()
# Expected should be (subclass of) void, with structured object dtype.
expected = np.array((p_ptid, v_ptid), [("p", "O"), ("v", "O")])[()]
assert pv_ptid == expected
# Names should be ignored in comparison.
assert pv_ptid == np.array((p_ptid, v_ptid), "O,O")[()]
# Should be possible to address by field and by number.
assert pv_ptid["p"] == p_ptid
assert pv_ptid["v"] == v_ptid
assert pv_ptid[0] == p_ptid
assert pv_ptid[1] == v_ptid
# More complicated version.
pv_t_ptid = self.pv_t_unit._get_physical_type_id()
t_ptid = self.t_unit._get_physical_type_id()
assert pv_t_ptid == np.array((pv_ptid, t_ptid), "O,O")[()]
assert pv_t_ptid["pv"] == pv_ptid
assert pv_t_ptid["t"] == t_ptid
assert pv_t_ptid["pv"][1] == v_ptid
def test_physical_type(self):
pv_pt = self.pv_unit.physical_type
assert pv_pt == np.array(("length", "speed"), "O,O")[()]
pv_t_pt = self.pv_t_unit.physical_type
assert pv_t_pt == np.array((pv_pt, "time"), "O,O")[()]
def test_si(self):
pv_t_si = self.pv_t_unit.si
assert pv_t_si == self.pv_t_unit
assert pv_t_si["pv"]["v"].scale == 1000
def test_cgs(self):
pv_t_cgs = self.pv_t_unit.cgs
assert pv_t_cgs == self.pv_t_unit
assert pv_t_cgs["pv"]["v"].scale == 100000
def test_decompose(self):
pv_t_decompose = self.pv_t_unit.decompose()
assert pv_t_decompose["pv"]["v"].scale == 1000
def test_is_equivalent(self):
assert self.pv_unit.is_equivalent(("AU", "AU/day"))
assert not self.pv_unit.is_equivalent("m")
assert not self.pv_unit.is_equivalent(("AU", "AU"))
# Names should be ignored.
pv_alt = StructuredUnit("m,m/s", names=("q", "w"))
assert pv_alt.field_names != self.pv_unit.field_names
assert self.pv_unit.is_equivalent(pv_alt)
# Regular units should work too.
assert not u.m.is_equivalent(self.pv_unit)
def test_conversion(self):
pv1 = self.pv_unit.to(("AU", "AU/day"), self.pv)
assert isinstance(pv1, np.ndarray)
assert pv1.dtype == self.pv.dtype
assert np.all(pv1["p"] * u.AU == self.pv["p"] * self.p_unit)
assert np.all(pv1["v"] * u.AU / u.day == self.pv["v"] * self.v_unit)
# Names should be from value.
su2 = StructuredUnit((self.p_unit, self.v_unit), ("position", "velocity"))
pv2 = su2.to(("Mm", "mm/s"), self.pv)
assert pv2.dtype.names == ("p", "v")
assert pv2.dtype == self.pv.dtype
# Check recursion.
pv_t1 = self.pv_t_unit.to((("AU", "AU/day"), "Myr"), self.pv_t)
assert isinstance(pv_t1, np.ndarray)
assert pv_t1.dtype == self.pv_t.dtype
assert np.all(pv_t1["pv"]["p"] * u.AU == self.pv_t["pv"]["p"] * self.p_unit)
assert np.all(
pv_t1["pv"]["v"] * u.AU / u.day == self.pv_t["pv"]["v"] * self.v_unit
)
assert np.all(pv_t1["t"] * u.Myr == self.pv_t["t"] * self.t_unit)
# Passing in tuples should work.
pv_t2 = self.pv_t_unit.to((("AU", "AU/day"), "Myr"), ((1.0, 0.1), 10.0))
assert pv_t2["pv"]["p"] == self.p_unit.to("AU", 1.0)
assert pv_t2["pv"]["v"] == self.v_unit.to("AU/day", 0.1)
assert pv_t2["t"] == self.t_unit.to("Myr", 10.0)
pv_t3 = self.pv_t_unit.to(
(("AU", "AU/day"), "Myr"), [((1.0, 0.1), 10.0), ((2.0, 0.2), 20.0)]
)
assert np.all(pv_t3["pv"]["p"] == self.p_unit.to("AU", [1.0, 2.0]))
assert np.all(pv_t3["pv"]["v"] == self.v_unit.to("AU/day", [0.1, 0.2]))
assert np.all(pv_t3["t"] == self.t_unit.to("Myr", [10.0, 20.0]))
class TestStructuredUnitArithmatic(StructuredTestBaseWithUnits):
def test_multiplication(self):
pv_times_au = self.pv_unit * u.au
assert isinstance(pv_times_au, StructuredUnit)
assert pv_times_au.field_names == ("p", "v")
assert pv_times_au["p"] == self.p_unit * u.AU
assert pv_times_au["v"] == self.v_unit * u.AU
au_times_pv = u.au * self.pv_unit
assert au_times_pv == pv_times_au
pv_times_au2 = self.pv_unit * "au"
assert pv_times_au2 == pv_times_au
au_times_pv2 = "AU" * self.pv_unit
assert au_times_pv2 == pv_times_au
with pytest.raises(TypeError):
self.pv_unit * self.pv_unit
with pytest.raises(TypeError):
"s,s" * self.pv_unit
def test_division(self):
pv_by_s = self.pv_unit / u.s
assert isinstance(pv_by_s, StructuredUnit)
assert pv_by_s.field_names == ("p", "v")
assert pv_by_s["p"] == self.p_unit / u.s
assert pv_by_s["v"] == self.v_unit / u.s
pv_by_s2 = self.pv_unit / "s"
assert pv_by_s2 == pv_by_s
with pytest.raises(TypeError):
1.0 / self.pv_unit
with pytest.raises(TypeError):
u.s / self.pv_unit
class TestStructuredQuantity(StructuredTestBaseWithUnits):
def test_initialization_and_keying(self):
q_pv = Quantity(self.pv, self.pv_unit)
q_p = q_pv["p"]
assert isinstance(q_p, Quantity)
assert isinstance(q_p.unit, UnitBase)
assert np.all(q_p == self.pv["p"] * self.pv_unit["p"])
q_v = q_pv["v"]
assert isinstance(q_v, Quantity)
assert isinstance(q_v.unit, UnitBase)
assert np.all(q_v == self.pv["v"] * self.pv_unit["v"])
q_pv_t = Quantity(self.pv_t, self.pv_t_unit)
q_t = q_pv_t["t"]
assert np.all(q_t == self.pv_t["t"] * self.pv_t_unit["t"])
q_pv2 = q_pv_t["pv"]
assert isinstance(q_pv2, Quantity)
assert q_pv2.unit == self.pv_unit
with pytest.raises(ValueError):
Quantity(self.pv, self.pv_t_unit)
with pytest.raises(ValueError):
Quantity(self.pv_t, self.pv_unit)
def test_initialization_with_unit_tuples(self):
q_pv_t = Quantity(self.pv_t, (("km", "km/s"), "s"))
assert isinstance(q_pv_t.unit, StructuredUnit)
assert q_pv_t.unit == self.pv_t_unit
def test_initialization_with_string(self):
q_pv_t = Quantity(self.pv_t, "(km, km/s), s")
assert isinstance(q_pv_t.unit, StructuredUnit)
assert q_pv_t.unit == self.pv_t_unit
def test_initialization_by_multiplication_with_unit(self):
q_pv_t = self.pv_t * self.pv_t_unit
assert q_pv_t.unit is self.pv_t_unit
assert np.all(q_pv_t.value == self.pv_t)
assert not np.may_share_memory(q_pv_t, self.pv_t)
q_pv_t2 = self.pv_t_unit * self.pv_t
assert q_pv_t.unit is self.pv_t_unit
# Not testing equality of structured Quantity here.
assert np.all(q_pv_t2.value == q_pv_t.value)
def test_initialization_by_shifting_to_unit(self):
q_pv_t = self.pv_t << self.pv_t_unit
assert q_pv_t.unit is self.pv_t_unit
assert np.all(q_pv_t.value == self.pv_t)
assert np.may_share_memory(q_pv_t, self.pv_t)
def test_initialization_without_unit(self):
q_pv_t = u.Quantity(self.pv_t, unit=None)
assert np.all(q_pv_t.value == self.pv_t)
# Test that unit is a structured unit like the dtype
expected_unit = _structured_unit_like_dtype(
u.Quantity._default_unit, self.pv_t.dtype
)
assert q_pv_t.unit == expected_unit
# A more explicit test
assert q_pv_t.unit == u.StructuredUnit(((u.one, u.one), u.one))
def test_getitem(self):
q_pv_t = Quantity(self.pv_t, self.pv_t_unit)
q_pv_t01 = q_pv_t[:2]
assert isinstance(q_pv_t01, Quantity)
assert q_pv_t01.unit == q_pv_t.unit
assert np.all(q_pv_t01["t"] == q_pv_t["t"][:2])
q_pv_t1 = q_pv_t[1]
assert isinstance(q_pv_t1, Quantity)
assert q_pv_t1.unit == q_pv_t.unit
assert q_pv_t1.shape == ()
assert q_pv_t1["t"] == q_pv_t["t"][1]
def test_value(self):
q_pv_t = Quantity(self.pv_t, self.pv_t_unit)
value = q_pv_t.value
assert type(value) is np.ndarray
assert np.all(value == self.pv_t)
value1 = q_pv_t[1].value
assert type(value1) is np.void
assert np.all(value1 == self.pv_t[1])
def test_conversion(self):
q_pv = Quantity(self.pv, self.pv_unit)
q1 = q_pv.to(("AU", "AU/day"))
assert isinstance(q1, Quantity)
assert q1["p"].unit == u.AU
assert q1["v"].unit == u.AU / u.day
assert np.all(q1["p"] == q_pv["p"].to(u.AU))
assert np.all(q1["v"] == q_pv["v"].to(u.AU / u.day))
q2 = q_pv.to(self.pv_unit)
assert q2["p"].unit == self.p_unit
assert q2["v"].unit == self.v_unit
assert np.all(q2["p"].value == self.pv["p"])
assert np.all(q2["v"].value == self.pv["v"])
assert not np.may_share_memory(q2, q_pv)
pv1 = q_pv.to_value(("AU", "AU/day"))
assert type(pv1) is np.ndarray
assert np.all(pv1["p"] == q_pv["p"].to_value(u.AU))
assert np.all(pv1["v"] == q_pv["v"].to_value(u.AU / u.day))
pv11 = q_pv[1].to_value(("AU", "AU/day"))
assert type(pv11) is np.void
assert pv11 == pv1[1]
q_pv_t = Quantity(self.pv_t, self.pv_t_unit)
q2 = q_pv_t.to((("kpc", "kpc/Myr"), "Myr"))
assert q2["pv"]["p"].unit == u.kpc
assert q2["pv"]["v"].unit == u.kpc / u.Myr
assert q2["t"].unit == u.Myr
assert np.all(q2["pv"]["p"] == q_pv_t["pv"]["p"].to(u.kpc))
assert np.all(q2["pv"]["v"] == q_pv_t["pv"]["v"].to(u.kpc / u.Myr))
assert np.all(q2["t"] == q_pv_t["t"].to(u.Myr))
def test_conversion_via_lshift(self):
q_pv = Quantity(self.pv, self.pv_unit)
q1 = q_pv << StructuredUnit(("AU", "AU/day"))
assert isinstance(q1, Quantity)
assert q1["p"].unit == u.AU
assert q1["v"].unit == u.AU / u.day
assert np.all(q1["p"] == q_pv["p"].to(u.AU))
assert np.all(q1["v"] == q_pv["v"].to(u.AU / u.day))
q2 = q_pv << self.pv_unit
assert q2["p"].unit == self.p_unit
assert q2["v"].unit == self.v_unit
assert np.all(q2["p"].value == self.pv["p"])
assert np.all(q2["v"].value == self.pv["v"])
assert np.may_share_memory(q2, q_pv)
q_pv_t = Quantity(self.pv_t, self.pv_t_unit)
q2 = q_pv_t << "(kpc,kpc/Myr),Myr"
assert q2["pv"]["p"].unit == u.kpc
assert q2["pv"]["v"].unit == u.kpc / u.Myr
assert q2["t"].unit == u.Myr
assert np.all(q2["pv"]["p"] == q_pv_t["pv"]["p"].to(u.kpc))
assert np.all(q2["pv"]["v"] == q_pv_t["pv"]["v"].to(u.kpc / u.Myr))
assert np.all(q2["t"] == q_pv_t["t"].to(u.Myr))
def test_inplace_conversion(self):
# In principle, in-place might be possible, in which case this should be
# changed -- ie ``q1 is q_link``.
q_pv = Quantity(self.pv, self.pv_unit)
q1 = q_pv.copy()
q_link = q1
q1 <<= StructuredUnit(("AU", "AU/day"))
assert q1 is not q_link
assert q1["p"].unit == u.AU
assert q1["v"].unit == u.AU / u.day
assert np.all(q1["p"] == q_pv["p"].to(u.AU))
assert np.all(q1["v"] == q_pv["v"].to(u.AU / u.day))
q_pv_t = Quantity(self.pv_t, self.pv_t_unit)
q2 = q_pv_t.copy()
q_link = q2
q2 <<= "(kpc,kpc/Myr),Myr"
assert q2 is not q_link
assert q2["pv"]["p"].unit == u.kpc
assert q2["pv"]["v"].unit == u.kpc / u.Myr
assert q2["t"].unit == u.Myr
assert np.all(q2["pv"]["p"] == q_pv_t["pv"]["p"].to(u.kpc))
assert np.all(q2["pv"]["v"] == q_pv_t["pv"]["v"].to(u.kpc / u.Myr))
assert np.all(q2["t"] == q_pv_t["t"].to(u.Myr))
def test_si(self):
q_pv_t = Quantity(self.pv_t, self.pv_t_unit)
q_pv_t_si = q_pv_t.si
assert_array_equal(q_pv_t_si, q_pv_t.to("(m,m/s),s"))
def test_cgs(self):
q_pv_t = Quantity(self.pv_t, self.pv_t_unit)
q_pv_t_cgs = q_pv_t.cgs
assert_array_equal(q_pv_t_cgs, q_pv_t.to("(cm,cm/s),s"))
def test_equality(self):
q_pv = Quantity(self.pv, self.pv_unit)
equal = q_pv == q_pv
not_equal = q_pv != q_pv
assert np.all(equal)
assert not np.any(not_equal)
equal2 = q_pv == q_pv[1]
not_equal2 = q_pv != q_pv[1]
assert np.all(equal2 == [False, True, False])
assert np.all(not_equal2 != equal2)
q1 = q_pv.to(("AU", "AU/day"))
# Ensure same conversion is done, by placing q1 first.
assert np.all(q1 == q_pv)
assert not np.any(q1 != q_pv)
# Check different names in dtype.
assert np.all(q1.value * u.Unit("AU, AU/day") == q_pv)
assert not np.any(q1.value * u.Unit("AU, AU/day") != q_pv)
assert (q_pv == "b") is False
assert ("b" != q_pv) is True
q_pv_t = Quantity(self.pv_t, self.pv_t_unit)
assert np.all((q_pv_t[2] == q_pv_t) == [False, False, True])
assert np.all((q_pv_t[2] != q_pv_t) != [False, False, True])
assert (q_pv == q_pv_t) is False
assert (q_pv_t != q_pv) is True
def test_setitem(self):
q_pv = Quantity(self.pv, self.pv_unit)
q_pv[1] = (2.0, 2.0) * self.pv_unit
assert q_pv[1].value == np.array((2.0, 2.0), self.pv_dtype)
q_pv[1:2] = (1.0, 0.5) * u.Unit("AU, AU/day")
assert q_pv["p"][1] == 1.0 * u.AU
assert q_pv["v"][1] == 0.5 * u.AU / u.day
q_pv["v"] = 1.0 * u.km / u.s
assert np.all(q_pv["v"] == 1.0 * u.km / u.s)
with pytest.raises(u.UnitsError):
q_pv[1] = (1.0, 1.0) * u.Unit("AU, AU")
with pytest.raises(u.UnitsError):
q_pv["v"] = 1.0 * u.km
q_pv_t = Quantity(self.pv_t, self.pv_t_unit)
q_pv_t[1] = ((2.0, 2.0), 3.0) * self.pv_t_unit
assert q_pv_t[1].value == np.array(((2.0, 2.0), 3.0), self.pv_t_dtype)
q_pv_t[1:2] = ((1.0, 0.5), 5.0) * u.Unit("(AU, AU/day), yr")
assert q_pv_t["pv"][1] == (1.0, 0.5) * u.Unit("AU, AU/day")
assert q_pv_t["t"][1] == 5.0 * u.yr
q_pv_t["pv"] = (1.0, 0.5) * self.pv_unit
assert np.all(q_pv_t["pv"] == (1.0, 0.5) * self.pv_unit)
class TestStructuredQuantityFunctions(StructuredTestBaseWithUnits):
@classmethod
def setup_class(self):
super().setup_class()
self.q_pv = self.pv << self.pv_unit
self.q_pv_t = self.pv_t << self.pv_t_unit
def test_empty_like(self):
z = np.empty_like(self.q_pv)
assert z.dtype == self.pv_dtype
assert z.unit == self.pv_unit
assert z.shape == self.pv.shape
@pytest.mark.parametrize("func", [np.zeros_like, np.ones_like])
def test_zeros_ones_like(self, func):
z = func(self.q_pv)
assert z.dtype == self.pv_dtype
assert z.unit == self.pv_unit
assert z.shape == self.pv.shape
assert_array_equal(z, func(self.pv) << self.pv_unit)
def test_structured_to_unstructured(self):
# can't unstructure something with incompatible units
with pytest.raises(u.UnitConversionError, match="'km / s'"):
rfn.structured_to_unstructured(self.q_pv)
# For the other tests of ``structured_to_unstructured``, see
# ``test_quantity_non_ufuncs.TestRecFunctions.test_structured_to_unstructured``
def test_unstructured_to_structured(self):
# can't structure something that's already structured
dtype = np.dtype([("f1", float), ("f2", float)])
with pytest.raises(ValueError, match="The length of the last dimension"):
rfn.unstructured_to_structured(self.q_pv, dtype=self.q_pv.dtype)
# For the other tests of ``structured_to_unstructured``, see
# ``test_quantity_non_ufuncs.TestRecFunctions.test_unstructured_to_structured``
class TestStructuredSpecificTypeQuantity(StructuredTestBaseWithUnits):
def setup_class(self):
super().setup_class()
class PositionVelocity(u.SpecificTypeQuantity):
_equivalent_unit = self.pv_unit
self.PositionVelocity = PositionVelocity
def test_init(self):
pv = self.PositionVelocity(self.pv, self.pv_unit)
assert isinstance(pv, self.PositionVelocity)
assert type(pv["p"]) is u.Quantity
assert_array_equal(pv["p"], self.pv["p"] << self.pv_unit["p"])
pv2 = self.PositionVelocity(self.pv, "AU,AU/day")
assert_array_equal(pv2["p"], self.pv["p"] << u.AU)
def test_error_on_non_equivalent_unit(self):
with pytest.raises(u.UnitsError):
self.PositionVelocity(self.pv, "AU")
with pytest.raises(u.UnitsError):
self.PositionVelocity(self.pv, "AU,yr")
class TestStructuredLogUnit:
def setup_class(self):
self.mag_time_dtype = np.dtype([("mag", "f8"), ("t", "f8")])
self.mag_time = np.array([(20.0, 10.0), (25.0, 100.0)], self.mag_time_dtype)
def test_unit_initialization(self):
mag_time_unit = StructuredUnit((u.STmag, u.s), self.mag_time_dtype)
assert mag_time_unit["mag"] == u.STmag
assert mag_time_unit["t"] == u.s
mag_time_unit2 = u.Unit("mag(ST),s")
assert mag_time_unit2 == mag_time_unit
def test_quantity_initialization(self):
su = u.Unit("mag(ST),s")
mag_time = self.mag_time << su
assert isinstance(mag_time["mag"], u.Magnitude)
assert isinstance(mag_time["t"], u.Quantity)
assert mag_time.unit == su
assert_array_equal(mag_time["mag"], self.mag_time["mag"] << u.STmag)
assert_array_equal(mag_time["t"], self.mag_time["t"] << u.s)
def test_quantity_si(self):
mag_time = self.mag_time << u.Unit("mag(ST),yr")
mag_time_si = mag_time.si
assert_array_equal(mag_time_si["mag"], mag_time["mag"].si)
assert_array_equal(mag_time_si["t"], mag_time["t"].si)
class TestStructuredMaskedQuantity(StructuredTestBaseWithUnits):
"""Somewhat minimal tests. Conversion is most stringent."""
def setup_class(self):
super().setup_class()
self.qpv = self.pv << self.pv_unit
self.pv_mask = np.array(
[
(True, False),
(False, False),
(False, True),
],
[("p", bool), ("v", bool)],
)
self.mpv = Masked(self.qpv, mask=self.pv_mask)
def test_init(self):
assert isinstance(self.mpv, Masked)
assert isinstance(self.mpv, Quantity)
assert_array_equal(self.mpv.unmasked, self.qpv)
assert_array_equal(self.mpv.mask, self.pv_mask)
def test_slicing(self):
mp = self.mpv["p"]
assert isinstance(mp, Masked)
assert isinstance(mp, Quantity)
assert_array_equal(mp.unmasked, self.qpv["p"])
assert_array_equal(mp.mask, self.pv_mask["p"])
def test_conversion(self):
mpv = self.mpv.to("AU,AU/day")
assert isinstance(mpv, Masked)
assert isinstance(mpv, Quantity)
assert_array_equal(mpv.unmasked, self.qpv.to("AU,AU/day"))
assert_array_equal(mpv.mask, self.pv_mask)
assert np.all(mpv == self.mpv)
def test_si(self):
mpv = self.mpv.si
assert isinstance(mpv, Masked)
assert isinstance(mpv, Quantity)
assert_array_equal(mpv.unmasked, self.qpv.si)
assert_array_equal(mpv.mask, self.pv_mask)
assert np.all(mpv == self.mpv)