tests/bindings/python/bt2/test_field_class.py

   1 #
   2 # Copyright (C) 2019 EfficiOS Inc.
   3 #
   4 # This program is free software; you can redistribute it and/or
   5 # modify it under the terms of the GNU General Public License
   6 # as published by the Free Software Foundation; only version 2
   7 # of the License.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program; if not, write to the Free Software
  16 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  17 #
  18
  19 import unittest
  20 import bt2
  21 from utils import get_default_trace_class, TestOutputPortMessageIterator
  22 from bt2 import value as bt2_value
  23 from bt2 import field_class as bt2_field_class
  24
  25
  26 def _create_stream(tc, ctx_field_classes):
  27     packet_context_fc = tc.create_structure_field_class()
  28     for name, fc in ctx_field_classes:
  29         packet_context_fc.append_member(name, fc)
  30
  31     trace = tc()
  32     stream_class = tc.create_stream_class(
  33         packet_context_field_class=packet_context_fc, supports_packets=True
  34     )
  35
  36     stream = trace.create_stream(stream_class)
  37     return stream
  38
  39
  40 def _create_const_field_class(tc, field_class, value_setter_fn):
  41     field_name = 'const field'
  42
  43     class MyIter(bt2._UserMessageIterator):
  44         def __init__(self, config, self_port_output):
  45             nonlocal field_class
  46             nonlocal value_setter_fn
  47             stream = _create_stream(tc, [(field_name, field_class)])
  48             packet = stream.create_packet()
  49
  50             value_setter_fn(packet.context_field[field_name])
  51
  52             self._msgs = [
  53                 self._create_stream_beginning_message(stream),
  54                 self._create_packet_beginning_message(packet),
  55             ]
  56
  57         def __next__(self):
  58             if len(self._msgs) == 0:
  59                 raise StopIteration
  60
  61             return self._msgs.pop(0)
  62
  63     class MySrc(bt2._UserSourceComponent, message_iterator_class=MyIter):
  64         def __init__(self, config, params, obj):
  65             self._add_output_port('out', params)
  66
  67     graph = bt2.Graph()
  68     src_comp = graph.add_component(MySrc, 'my_source', None)
  69     msg_iter = TestOutputPortMessageIterator(graph, src_comp.output_ports['out'])
  70
  71     # Ignore first message, stream beginning
  72     _ = next(msg_iter)
  73     packet_beg_msg = next(msg_iter)
  74
  75     return packet_beg_msg.packet.context_field[field_name].cls
  76
  77
  78 class _TestFieldClass:
  79     def test_create_user_attributes(self):
  80         fc = self._create_default_field_class(user_attributes={'salut': 23})
  81         self.assertEqual(fc.user_attributes, {'salut': 23})
  82         self.assertIs(type(fc.user_attributes), bt2_value.MapValue)
  83
  84     def test_const_create_user_attributes(self):
  85         fc = self._create_default_const_field_class(user_attributes={'salut': 23})
  86         self.assertEqual(fc.user_attributes, {'salut': 23})
  87         self.assertIs(type(fc.user_attributes), bt2_value._MapValueConst)
  88
  89     def test_create_invalid_user_attributes(self):
  90         with self.assertRaises(TypeError):
  91             self._create_default_field_class(user_attributes=object())
  92
  93     def test_create_invalid_user_attributes_value_type(self):
  94         with self.assertRaises(TypeError):
  95             self._create_default_field_class(user_attributes=23)
  96
  97
  98 class BoolFieldClassTestCase(_TestFieldClass, unittest.TestCase):
  99     @staticmethod
 100     def _const_value_setter(field):
 101         field.value = False
 102
 103     def _create_default_field_class(self, **kwargs):
 104         tc = get_default_trace_class()
 105         return tc.create_bool_field_class(**kwargs)
 106
 107     def _create_default_const_field_class(self, *args, **kwargs):
 108         tc = get_default_trace_class()
 109         fc = tc.create_bool_field_class(*args, **kwargs)
 110         return _create_const_field_class(tc, fc, self._const_value_setter)
 111
 112     def setUp(self):
 113         self._fc = self._create_default_field_class()
 114         self._fc_const = self._create_default_const_field_class()
 115
 116     def test_create_default(self):
 117         self.assertIsNotNone(self._fc)
 118         self.assertEqual(len(self._fc.user_attributes), 0)
 119
 120
 121 class BitArrayFieldClassTestCase(_TestFieldClass, unittest.TestCase):
 122     @staticmethod
 123     def _const_value_setter(field):
 124         field.value = []
 125
 126     def _create_field_class(self, *args, **kwargs):
 127         tc = get_default_trace_class()
 128         return tc.create_bit_array_field_class(*args, **kwargs)
 129
 130     def _create_default_field_class(self, **kwargs):
 131         return self._create_field_class(17, **kwargs)
 132
 133     def _create_default_const_field_class(self, *args, **kwargs):
 134         tc = get_default_trace_class()
 135         fc = tc.create_bit_array_field_class(17, **kwargs)
 136         return _create_const_field_class(tc, fc, self._const_value_setter)
 137
 138     def setUp(self):
 139         self._fc = self._create_default_field_class()
 140
 141     def test_create_default(self):
 142         self.assertIsNotNone(self._fc)
 143         self.assertEqual(len(self._fc.user_attributes), 0)
 144
 145     def test_create_length_out_of_range(self):
 146         with self.assertRaises(ValueError):
 147             self._create_field_class(65)
 148
 149     def test_create_length_zero(self):
 150         with self.assertRaises(ValueError):
 151             self._create_field_class(0)
 152
 153     def test_create_length_invalid_type(self):
 154         with self.assertRaises(TypeError):
 155             self._create_field_class('lel')
 156
 157     def test_length_prop(self):
 158         self.assertEqual(self._fc.length, 17)
 159
 160
 161 class _TestIntegerFieldClassProps:
 162     def test_create_default(self):
 163         fc = self._create_default_field_class()
 164         self.assertEqual(fc.field_value_range, 64)
 165         self.assertEqual(fc.preferred_display_base, bt2.IntegerDisplayBase.DECIMAL)
 166         self.assertEqual(len(fc.user_attributes), 0)
 167
 168     def test_create_range(self):
 169         fc = self._create_field_class(field_value_range=35)
 170         self.assertEqual(fc.field_value_range, 35)
 171
 172         fc = self._create_field_class(36)
 173         self.assertEqual(fc.field_value_range, 36)
 174
 175     def test_create_invalid_range(self):
 176         with self.assertRaises(TypeError):
 177             self._create_field_class('yes')
 178
 179         with self.assertRaises(TypeError):
 180             self._create_field_class(field_value_range='yes')
 181
 182         with self.assertRaises(ValueError):
 183             self._create_field_class(field_value_range=-2)
 184
 185         with self.assertRaises(ValueError):
 186             self._create_field_class(field_value_range=0)
 187
 188     def test_create_base(self):
 189         fc = self._create_field_class(
 190             preferred_display_base=bt2.IntegerDisplayBase.HEXADECIMAL
 191         )
 192         self.assertEqual(fc.preferred_display_base, bt2.IntegerDisplayBase.HEXADECIMAL)
 193
 194     def test_create_invalid_base_type(self):
 195         with self.assertRaises(TypeError):
 196             self._create_field_class(preferred_display_base='yes')
 197
 198     def test_create_invalid_base_value(self):
 199         with self.assertRaises(ValueError):
 200             self._create_field_class(preferred_display_base=444)
 201
 202     def test_create_full(self):
 203         fc = self._create_field_class(
 204             24, preferred_display_base=bt2.IntegerDisplayBase.OCTAL
 205         )
 206         self.assertEqual(fc.field_value_range, 24)
 207         self.assertEqual(fc.preferred_display_base, bt2.IntegerDisplayBase.OCTAL)
 208
 209
 210 class SignedIntegerFieldClassTestCase(
 211     _TestIntegerFieldClassProps, _TestFieldClass, unittest.TestCase
 212 ):
 213     @staticmethod
 214     def _const_value_setter(field):
 215         field.value = -18
 216
 217     def _create_field_class(self, *args, **kwargs):
 218         tc = get_default_trace_class()
 219         return tc.create_signed_integer_field_class(*args, **kwargs)
 220
 221     def _create_default_const_field_class(self, *args, **kwargs):
 222         tc = get_default_trace_class()
 223         fc = tc.create_signed_integer_field_class(*args, **kwargs)
 224         return _create_const_field_class(tc, fc, self._const_value_setter)
 225
 226     _create_default_field_class = _create_field_class
 227
 228
 229 class UnsignedIntegerFieldClassTestCase(
 230     _TestIntegerFieldClassProps, _TestFieldClass, unittest.TestCase
 231 ):
 232     @staticmethod
 233     def _const_value_setter(field):
 234         field.value = 18
 235
 236     def _create_field_class(self, *args, **kwargs):
 237         tc = get_default_trace_class()
 238         return tc.create_unsigned_integer_field_class(*args, **kwargs)
 239
 240     def _create_default_const_field_class(self, *args, **kwargs):
 241         tc = get_default_trace_class()
 242         fc = tc.create_signed_integer_field_class(*args, **kwargs)
 243         return _create_const_field_class(tc, fc, self._const_value_setter)
 244
 245     _create_default_field_class = _create_field_class
 246
 247
 248 class SingleRealFieldClassTestCase(_TestFieldClass, unittest.TestCase):
 249     @staticmethod
 250     def _const_value_setter(field):
 251         field.value = -18.0
 252
 253     def _create_field_class(self, *args, **kwargs):
 254         tc = get_default_trace_class()
 255         return tc.create_single_precision_real_field_class(*args, **kwargs)
 256
 257     def _create_default_const_field_class(self, *args, **kwargs):
 258         tc = get_default_trace_class()
 259         fc = tc.create_single_precision_real_field_class(*args, **kwargs)
 260         return _create_const_field_class(tc, fc, self._const_value_setter)
 261
 262     _create_default_field_class = _create_field_class
 263
 264     def test_create_default(self):
 265         fc = self._create_field_class()
 266         self.assertEqual(len(fc.user_attributes), 0)
 267
 268
 269 class DoubleRealFieldClassTestCase(_TestFieldClass, unittest.TestCase):
 270     @staticmethod
 271     def _const_value_setter(field):
 272         field.value = -18.0
 273
 274     def _create_field_class(self, *args, **kwargs):
 275         tc = get_default_trace_class()
 276         return tc.create_double_precision_real_field_class(*args, **kwargs)
 277
 278     def _create_default_const_field_class(self, *args, **kwargs):
 279         tc = get_default_trace_class()
 280         fc = tc.create_double_precision_real_field_class(*args, **kwargs)
 281         return _create_const_field_class(tc, fc, self._const_value_setter)
 282
 283     _create_default_field_class = _create_field_class
 284
 285     def test_create_default(self):
 286         fc = self._create_field_class()
 287         self.assertEqual(len(fc.user_attributes), 0)
 288
 289
 290 # Converts an _EnumerationFieldClassMapping to a list of ranges:
 291 #
 292 #    [(lower0, upper0), (lower1, upper1), ...]
 293
 294
 295 def enum_mapping_to_set(mapping):
 296     return {(x.lower, x.upper) for x in mapping.ranges}
 297
 298
 299 class _EnumerationFieldClassTestCase(_TestIntegerFieldClassProps):
 300     def setUp(self):
 301         self._spec_set_up()
 302         self._fc = self._create_default_field_class()
 303         self._fc_const = self._create_default_const_field_class()
 304
 305     def test_create_from_invalid_type(self):
 306         with self.assertRaises(TypeError):
 307             self._create_field_class('coucou')
 308
 309     def test_add_mapping_simple(self):
 310         self._fc.add_mapping('hello', self._ranges1)
 311         mapping = self._fc['hello']
 312         self.assertEqual(mapping.label, 'hello')
 313         self.assertEqual(mapping.ranges, self._ranges1)
 314
 315     def test_const_add_mapping(self):
 316         with self.assertRaises(AttributeError):
 317             self._fc_const.add_mapping('hello', self._ranges1)
 318
 319     def test_add_mapping_simple_kwargs(self):
 320         self._fc.add_mapping(label='hello', ranges=self._ranges1)
 321         mapping = self._fc['hello']
 322         self.assertEqual(mapping.label, 'hello')
 323         self.assertEqual(mapping.ranges, self._ranges1)
 324
 325     def test_add_mapping_invalid_name(self):
 326         with self.assertRaises(TypeError):
 327             self._fc.add_mapping(17, self._ranges1)
 328
 329     def test_add_mapping_invalid_range(self):
 330         with self.assertRaises(TypeError):
 331             self._fc.add_mapping('allo', 'meow')
 332
 333     def test_add_mapping_dup_label(self):
 334         with self.assertRaises(ValueError):
 335             self._fc.add_mapping('a', self._ranges1)
 336             self._fc.add_mapping('a', self._ranges2)
 337
 338     def test_add_mapping_invalid_ranges_signedness(self):
 339         with self.assertRaises(TypeError):
 340             self._fc.add_mapping('allo', self._inval_ranges)
 341
 342     def test_iadd(self):
 343         self._fc.add_mapping('c', self._ranges1)
 344
 345         self._fc += [('d', self._ranges2), ('e', self._ranges3)]
 346
 347         self.assertEqual(len(self._fc), 3)
 348         self.assertEqual(self._fc['c'].label, 'c')
 349         self.assertEqual(self._fc['c'].ranges, self._ranges1)
 350         self.assertEqual(self._fc['d'].label, 'd')
 351         self.assertEqual(self._fc['d'].ranges, self._ranges2)
 352         self.assertEqual(self._fc['e'].label, 'e')
 353         self.assertEqual(self._fc['e'].ranges, self._ranges3)
 354
 355     def test_const_iadd(self):
 356         with self.assertRaises(TypeError):
 357             self._fc_const += [('d', self._ranges2), ('e', self._ranges3)]
 358
 359     def test_bool_op(self):
 360         self.assertFalse(self._fc)
 361         self._fc.add_mapping('a', self._ranges1)
 362         self.assertTrue(self._fc)
 363
 364     def test_len(self):
 365         self._fc.add_mapping('a', self._ranges1)
 366         self._fc.add_mapping('b', self._ranges2)
 367         self._fc.add_mapping('c', self._ranges3)
 368         self.assertEqual(len(self._fc), 3)
 369
 370     def test_getitem(self):
 371         self._fc.add_mapping('a', self._ranges1)
 372         self._fc.add_mapping('b', self._ranges2)
 373         self._fc.add_mapping('c', self._ranges3)
 374         mapping = self._fc['a']
 375         self.assertEqual(mapping.label, 'a')
 376         self.assertEqual(mapping.ranges, self._ranges1)
 377         self.assertIs(type(mapping), self._MAPPING_CLASS)
 378         self.assertIs(type(mapping.ranges), self._CONST_RANGE_SET_CLASS)
 379
 380     def test_getitem_nonexistent(self):
 381         with self.assertRaises(KeyError):
 382             self._fc['doesnotexist']
 383
 384     def test_iter(self):
 385         self._fc.add_mapping('a', self._ranges1)
 386         self._fc.add_mapping('b', self._ranges2)
 387         self._fc.add_mapping('c', self._ranges3)
 388
 389         # This exercises iteration.
 390         labels = sorted(self._fc)
 391
 392         self.assertEqual(labels, ['a', 'b', 'c'])
 393
 394     def test_find_by_value(self):
 395         self._fc.add_mapping('a', self._ranges1)
 396         self._fc.add_mapping('b', self._ranges2)
 397         self._fc.add_mapping('c', self._ranges3)
 398         mappings = self._fc.mappings_for_value(self._value_in_range_1_and_3)
 399         labels = set([mapping.label for mapping in mappings])
 400         expected_labels = set(['a', 'c'])
 401         self.assertEqual(labels, expected_labels)
 402
 403
 404 class UnsignedEnumerationFieldClassTestCase(
 405     _EnumerationFieldClassTestCase, _TestFieldClass, unittest.TestCase
 406 ):
 407     _MAPPING_CLASS = bt2_field_class._UnsignedEnumerationFieldClassMappingConst
 408     _RANGE_SET_CLASS = bt2.UnsignedIntegerRangeSet
 409     _CONST_RANGE_SET_CLASS = bt2._UnsignedIntegerRangeSetConst
 410
 411     def _spec_set_up(self):
 412         self._ranges1 = bt2.UnsignedIntegerRangeSet([(1, 4), (18, 47)])
 413         self._ranges2 = bt2.UnsignedIntegerRangeSet([(5, 5)])
 414         self._ranges3 = bt2.UnsignedIntegerRangeSet([(8, 22), (48, 99)])
 415         self._inval_ranges = bt2.SignedIntegerRangeSet([(-8, -5), (48, 1928)])
 416         self._value_in_range_1_and_3 = 20
 417
 418     @staticmethod
 419     def _const_value_setter(field):
 420         field.value = 0
 421
 422     def _create_field_class(self, *args, **kwargs):
 423         tc = get_default_trace_class()
 424         return tc.create_unsigned_enumeration_field_class(*args, **kwargs)
 425
 426     def _create_default_const_field_class(self, *args, **kwargs):
 427         tc = get_default_trace_class()
 428         fc = tc.create_unsigned_enumeration_field_class(*args, **kwargs)
 429         return _create_const_field_class(tc, fc, self._const_value_setter)
 430
 431     _create_default_field_class = _create_field_class
 432
 433
 434 class SignedEnumerationFieldClassTestCase(
 435     _EnumerationFieldClassTestCase, _TestFieldClass, unittest.TestCase
 436 ):
 437     _MAPPING_CLASS = bt2_field_class._SignedEnumerationFieldClassMappingConst
 438     _RANGE_SET_CLASS = bt2.SignedIntegerRangeSet
 439     _CONST_RANGE_SET_CLASS = bt2._SignedIntegerRangeSetConst
 440
 441     def _spec_set_up(self):
 442         self._ranges1 = bt2.SignedIntegerRangeSet([(-10, -4), (18, 47)])
 443         self._ranges2 = bt2.SignedIntegerRangeSet([(-3, -3)])
 444         self._ranges3 = bt2.SignedIntegerRangeSet([(-100, -1), (8, 16), (48, 99)])
 445         self._inval_ranges = bt2.UnsignedIntegerRangeSet([(8, 16), (48, 99)])
 446         self._value_in_range_1_and_3 = -7
 447
 448     @staticmethod
 449     def _const_value_setter(field):
 450         field.value = 0
 451
 452     def _create_field_class(self, *args, **kwargs):
 453         tc = get_default_trace_class()
 454         return tc.create_signed_enumeration_field_class(*args, **kwargs)
 455
 456     def _create_default_const_field_class(self, *args, **kwargs):
 457         tc = get_default_trace_class()
 458         fc = tc.create_signed_enumeration_field_class(*args, **kwargs)
 459         return _create_const_field_class(tc, fc, self._const_value_setter)
 460
 461     _create_default_field_class = _create_field_class
 462
 463
 464 class StringFieldClassTestCase(_TestFieldClass, unittest.TestCase):
 465     @staticmethod
 466     def _const_value_setter(field):
 467         field.value = 'chaine'
 468
 469     def _create_field_class(self, *args, **kwargs):
 470         tc = get_default_trace_class()
 471         return tc.create_string_field_class(*args, **kwargs)
 472
 473     def _create_default_const_field_class(self, *args, **kwargs):
 474         tc = get_default_trace_class()
 475         fc = tc.create_string_field_class(*args, **kwargs)
 476         return _create_const_field_class(tc, fc, self._const_value_setter)
 477
 478     _create_default_field_class = _create_field_class
 479
 480     def setUp(self):
 481         self._fc = self._create_default_field_class()
 482
 483     def test_create_default(self):
 484         self.assertIsNotNone(self._fc)
 485         self.assertEqual(len(self._fc.user_attributes), 0)
 486
 487
 488 class _TestElementContainer:
 489     def setUp(self):
 490         self._tc = get_default_trace_class()
 491         self._fc = self._create_default_field_class()
 492         self._fc_const = self._create_default_const_field_class()
 493
 494     def test_create_default(self):
 495         self.assertIsNotNone(self._fc)
 496         self.assertEqual(len(self._fc.user_attributes), 0)
 497
 498     def test_append_element(self):
 499         int_field_class = self._tc.create_signed_integer_field_class(32)
 500         self._append_element_method(self._fc, 'int32', int_field_class)
 501         field_class = self._fc['int32'].field_class
 502         self.assertEqual(field_class.addr, int_field_class.addr)
 503
 504     def test_append_element_kwargs(self):
 505         int_field_class = self._tc.create_signed_integer_field_class(32)
 506         self._append_element_method(self._fc, name='int32', field_class=int_field_class)
 507         field_class = self._fc['int32'].field_class
 508         self.assertEqual(field_class.addr, int_field_class.addr)
 509
 510     def test_append_element_invalid_name(self):
 511         sub_fc = self._tc.create_string_field_class()
 512
 513         with self.assertRaises(TypeError):
 514             self._append_element_method(self._fc, 23, sub_fc)
 515
 516     def test_append_element_invalid_field_class(self):
 517         with self.assertRaises(TypeError):
 518             self._append_element_method(self._fc, 'yes', object())
 519
 520     def test_append_element_dup_name(self):
 521         sub_fc1 = self._tc.create_string_field_class()
 522         sub_fc2 = self._tc.create_string_field_class()
 523
 524         with self.assertRaises(ValueError):
 525             self._append_element_method(self._fc, 'yes', sub_fc1)
 526             self._append_element_method(self._fc, 'yes', sub_fc2)
 527
 528     def test_attr_field_class(self):
 529         int_field_class = self._tc.create_signed_integer_field_class(32)
 530         self._append_element_method(self._fc, 'int32', int_field_class)
 531         field_class = self._fc['int32'].field_class
 532
 533         self.assertIs(type(field_class), bt2_field_class._SignedIntegerFieldClass)
 534
 535     def test_const_attr_field_class(self):
 536         int_field_class = self._tc.create_signed_integer_field_class(32)
 537         self._append_element_method(self._fc, 'int32', int_field_class)
 538         field_class = self._fc['int32'].field_class
 539         const_fc = _create_const_field_class(
 540             self._tc, self._fc, self._const_value_setter
 541         )
 542         field_class = const_fc['int32'].field_class
 543
 544         self.assertIs(type(field_class), bt2_field_class._SignedIntegerFieldClassConst)
 545
 546     def test_iadd(self):
 547         a_field_class = self._tc.create_single_precision_real_field_class()
 548         b_field_class = self._tc.create_signed_integer_field_class(17)
 549         self._append_element_method(self._fc, 'a_float', a_field_class)
 550         self._append_element_method(self._fc, 'b_int', b_field_class)
 551         c_field_class = self._tc.create_string_field_class()
 552         d_field_class = self._tc.create_signed_enumeration_field_class(
 553             field_value_range=32
 554         )
 555         e_field_class = self._tc.create_structure_field_class()
 556         self._fc += [
 557             ('c_string', c_field_class),
 558             ('d_enum', d_field_class),
 559             ('e_struct', e_field_class),
 560         ]
 561         self.assertEqual(self._fc['a_float'].field_class.addr, a_field_class.addr)
 562         self.assertEqual(self._fc['a_float'].name, 'a_float')
 563         self.assertEqual(self._fc['b_int'].field_class.addr, b_field_class.addr)
 564         self.assertEqual(self._fc['b_int'].name, 'b_int')
 565         self.assertEqual(self._fc['c_string'].field_class.addr, c_field_class.addr)
 566         self.assertEqual(self._fc['c_string'].name, 'c_string')
 567         self.assertEqual(self._fc['d_enum'].field_class.addr, d_field_class.addr)
 568         self.assertEqual(self._fc['d_enum'].name, 'd_enum')
 569         self.assertEqual(self._fc['e_struct'].field_class.addr, e_field_class.addr)
 570         self.assertEqual(self._fc['e_struct'].name, 'e_struct')
 571
 572     def test_const_iadd(self):
 573         a_field_class = self._tc.create_single_precision_real_field_class()
 574         with self.assertRaises(TypeError):
 575             self._fc_const += a_field_class
 576
 577     def test_bool_op(self):
 578         self.assertFalse(self._fc)
 579         self._append_element_method(self._fc, 'a', self._tc.create_string_field_class())
 580         self.assertTrue(self._fc)
 581
 582     def test_len(self):
 583         self._append_element_method(self._fc, 'a', self._tc.create_string_field_class())
 584         self._append_element_method(self._fc, 'b', self._tc.create_string_field_class())
 585         self._append_element_method(self._fc, 'c', self._tc.create_string_field_class())
 586         self.assertEqual(len(self._fc), 3)
 587
 588     def test_getitem(self):
 589         a_fc = self._tc.create_signed_integer_field_class(32)
 590         b_fc = self._tc.create_string_field_class()
 591         c_fc = self._tc.create_single_precision_real_field_class()
 592         self._append_element_method(self._fc, 'a', a_fc)
 593         self._append_element_method(self._fc, 'b', b_fc)
 594         self._append_element_method(self._fc, 'c', c_fc)
 595         self.assertEqual(self._fc['b'].field_class.addr, b_fc.addr)
 596         self.assertEqual(self._fc['b'].name, 'b')
 597
 598     def test_getitem_invalid_key_type(self):
 599         with self.assertRaises(TypeError):
 600             self._fc[0]
 601
 602     def test_getitem_invalid_key(self):
 603         with self.assertRaises(KeyError):
 604             self._fc['no way']
 605
 606     def test_contains(self):
 607         self.assertFalse('a' in self._fc)
 608         self._append_element_method(self._fc, 'a', self._tc.create_string_field_class())
 609         self.assertTrue('a' in self._fc)
 610
 611     def test_iter(self):
 612         a_fc = self._tc.create_signed_integer_field_class(32)
 613         b_fc = self._tc.create_string_field_class()
 614         c_fc = self._tc.create_single_precision_real_field_class()
 615         elements = (('a', a_fc), ('b', b_fc), ('c', c_fc))
 616
 617         for elem in elements:
 618             self._append_element_method(self._fc, *elem)
 619
 620         for (name, element), test_elem in zip(self._fc.items(), elements):
 621             self.assertEqual(element.name, test_elem[0])
 622             self.assertEqual(name, element.name)
 623             self.assertEqual(element.field_class.addr, test_elem[1].addr)
 624             self.assertEqual(len(element.user_attributes), 0)
 625
 626     def test_at_index(self):
 627         a_fc = self._tc.create_signed_integer_field_class(32)
 628         b_fc = self._tc.create_string_field_class()
 629         c_fc = self._tc.create_single_precision_real_field_class()
 630         self._append_element_method(self._fc, 'c', c_fc)
 631         self._append_element_method(self._fc, 'a', a_fc)
 632         self._append_element_method(self._fc, 'b', b_fc)
 633         elem = self._at_index_method(self._fc, 1)
 634         self.assertEqual(elem.field_class.addr, a_fc.addr)
 635         self.assertEqual(elem.name, 'a')
 636
 637     def test_at_index_invalid(self):
 638         self._append_element_method(
 639             self._fc, 'c', self._tc.create_signed_integer_field_class(32)
 640         )
 641
 642         with self.assertRaises(TypeError):
 643             self._at_index_method(self._fc, 'yes')
 644
 645     def test_at_index_out_of_bounds_after(self):
 646         self._append_element_method(
 647             self._fc, 'c', self._tc.create_signed_integer_field_class(32)
 648         )
 649
 650         with self.assertRaises(IndexError):
 651             self._at_index_method(self._fc, len(self._fc))
 652
 653     def test_user_attributes(self):
 654         self._append_element_method(
 655             self._fc,
 656             'c',
 657             self._tc.create_string_field_class(),
 658             user_attributes={'salut': 23},
 659         )
 660         self.assertEqual(self._fc['c'].user_attributes, {'salut': 23})
 661         self.assertIs(type(self._fc.user_attributes), bt2_value.MapValue)
 662         self.assertIs(type(self._fc['c'].user_attributes), bt2_value.MapValue)
 663
 664     def test_invalid_user_attributes(self):
 665         with self.assertRaises(TypeError):
 666             self._append_element_method(
 667                 self._fc,
 668                 'c',
 669                 self._tc.create_string_field_class(),
 670                 user_attributes=object(),
 671             )
 672
 673     def test_invalid_user_attributes_value_type(self):
 674         with self.assertRaises(TypeError):
 675             self._append_element_method(
 676                 self._fc, 'c', self._tc.create_string_field_class(), user_attributes=23
 677             )
 678
 679
 680 class StructureFieldClassTestCase(
 681     _TestFieldClass, _TestElementContainer, unittest.TestCase
 682 ):
 683     _append_element_method = staticmethod(bt2._StructureFieldClass.append_member)
 684     _at_index_method = staticmethod(bt2._StructureFieldClass.member_at_index)
 685
 686     @staticmethod
 687     def _const_value_setter(field):
 688         field.value = {}
 689
 690     def _create_field_class(self, *args, **kwargs):
 691         tc = get_default_trace_class()
 692         return tc.create_structure_field_class(*args, **kwargs)
 693
 694     def _create_default_const_field_class(self, *args, **kwargs):
 695         tc = get_default_trace_class()
 696         fc = tc.create_structure_field_class(*args, **kwargs)
 697         return _create_const_field_class(tc, fc, self._const_value_setter)
 698
 699     _create_default_field_class = _create_field_class
 700
 701     def test_const_member_field_class(self):
 702         def _real_value_setter(field):
 703             field.value = {'real': 0}
 704
 705         tc = get_default_trace_class()
 706         fc = tc.create_structure_field_class()
 707         member_fc = self._tc.create_single_precision_real_field_class()
 708         fc.append_member('real', member_fc)
 709         const_fc = _create_const_field_class(tc, fc, _real_value_setter)
 710
 711         self.assertIs(
 712             type(const_fc['real'].field_class),
 713             bt2_field_class._SinglePrecisionRealFieldClassConst,
 714         )
 715
 716     def test_member_field_class(self):
 717         tc = get_default_trace_class()
 718         fc = tc.create_structure_field_class()
 719         member_fc = self._tc.create_single_precision_real_field_class()
 720         fc.append_member('real', member_fc)
 721
 722         self.assertIs(
 723             type(fc['real'].field_class), bt2_field_class._SinglePrecisionRealFieldClass
 724         )
 725
 726
 727 class OptionFieldClassTestCase(_TestFieldClass, unittest.TestCase):
 728     @staticmethod
 729     def _const_value_setter(field):
 730         field.has_field = True
 731         field.value = 12
 732
 733     def _create_default_field_class(self, *args, **kwargs):
 734         return self._tc.create_option_field_class(self._content_fc, **kwargs)
 735
 736     def _create_default_const_field_class(self, *args, **kwargs):
 737         fc = self._tc.create_option_field_class(self._content_fc, **kwargs)
 738         return _create_const_field_class(self._tc, fc, self._const_value_setter)
 739
 740     def setUp(self):
 741         self._tc = get_default_trace_class()
 742         self._content_fc = self._tc.create_signed_integer_field_class(23)
 743         self._tag_fc = self._tc.create_bool_field_class()
 744
 745     def test_create_default(self):
 746         fc = self._create_default_field_class()
 747         self.assertEqual(fc.field_class.addr, self._content_fc.addr)
 748         self.assertIsNone(fc.selector_field_path, None)
 749         self.assertEqual(len(fc.user_attributes), 0)
 750
 751     def test_attr_field_class(self):
 752         fc = self._create_default_field_class()
 753         self.assertIs(type(fc.field_class), bt2_field_class._SignedIntegerFieldClass)
 754
 755     def test_const_attr_field_class(self):
 756         fc = self._create_default_const_field_class()
 757         self.assertIs(
 758             type(fc.field_class), bt2_field_class._SignedIntegerFieldClassConst
 759         )
 760
 761     def _create_field_class_for_field_path_test(self):
 762         fc = self._create_default_field_class(selector_fc=self._tag_fc)
 763
 764         foo_fc = self._tc.create_single_precision_real_field_class()
 765         bar_fc = self._tc.create_string_field_class()
 766         baz_fc = self._tc.create_string_field_class()
 767
 768         inner_struct_fc = self._tc.create_structure_field_class()
 769         inner_struct_fc.append_member('bar', bar_fc)
 770         inner_struct_fc.append_member('baz', baz_fc)
 771         inner_struct_fc.append_member('tag', self._tag_fc)
 772         inner_struct_fc.append_member('opt', fc)
 773
 774         opt_struct_array_fc = self._tc.create_option_field_class(inner_struct_fc)
 775
 776         outer_struct_fc = self._tc.create_structure_field_class()
 777         outer_struct_fc.append_member('foo', foo_fc)
 778         outer_struct_fc.append_member('inner_opt', opt_struct_array_fc)
 779
 780         # The path to the selector field class is resolved when the
 781         # option field class is actually used, for example in a packet
 782         # context.
 783         self._tc.create_stream_class(
 784             packet_context_field_class=outer_struct_fc, supports_packets=True
 785         )
 786
 787         return fc
 788
 789     def test_field_path_len(self):
 790         fc = self._create_field_class_for_field_path_test()
 791         self.assertEqual(len(fc.selector_field_path), 3)
 792
 793     def test_field_path_iter(self):
 794         fc = self._create_field_class_for_field_path_test()
 795         path_items = list(fc.selector_field_path)
 796
 797         self.assertEqual(len(path_items), 3)
 798
 799         self.assertIsInstance(path_items[0], bt2._IndexFieldPathItem)
 800         self.assertEqual(path_items[0].index, 1)
 801
 802         self.assertIsInstance(path_items[1], bt2._CurrentOptionContentFieldPathItem)
 803
 804         self.assertIsInstance(path_items[2], bt2._IndexFieldPathItem)
 805         self.assertEqual(path_items[2].index, 2)
 806
 807     def test_field_path_root_scope(self):
 808         fc = self._create_field_class_for_field_path_test()
 809         self.assertEqual(
 810             fc.selector_field_path.root_scope, bt2.FieldPathScope.PACKET_CONTEXT
 811         )
 812
 813     def test_create_invalid_field_class(self):
 814         with self.assertRaises(TypeError):
 815             self._tc.create_option_field_class(object())
 816
 817     def test_create_invalid_selector_type(self):
 818         with self.assertRaises(TypeError):
 819             self._tc.create_option_field_class(self._content_fc, 17)
 820
 821
 822 class VariantFieldClassWithoutSelectorTestCase(
 823     _TestFieldClass, _TestElementContainer, unittest.TestCase
 824 ):
 825     _append_element_method = staticmethod(
 826         bt2._VariantFieldClassWithoutSelector.append_option
 827     )
 828     _at_index_method = staticmethod(
 829         bt2._VariantFieldClassWithoutSelector.option_at_index
 830     )
 831
 832     @staticmethod
 833     def _const_value_setter(variant_field):
 834         variant_field.selected_option_index = 0
 835         variant_field.value = 12
 836
 837     def _create_field_class(self, *args, **kwargs):
 838         tc = get_default_trace_class()
 839         return tc.create_variant_field_class(*args, **kwargs)
 840
 841     def _create_default_const_field_class(self, *args, **kwargs):
 842         tc = get_default_trace_class()
 843         fc = tc.create_variant_field_class(*args, **kwargs)
 844         int_field_class = self._tc.create_signed_integer_field_class(32)
 845         fc.append_option('int32', int_field_class)
 846
 847         return _create_const_field_class(tc, fc, self._const_value_setter)
 848
 849     _create_default_field_class = _create_field_class
 850
 851
 852 class _VariantFieldClassWithSelectorTestCase:
 853     @staticmethod
 854     def _const_value_setter(field):
 855         field['variant'].selected_option_index = 0
 856         field['variant'] = 12
 857
 858     def _create_default_field_class(self, *args, **kwargs):
 859         return self._tc.create_variant_field_class(
 860             *args, selector_fc=self._selector_fc, **kwargs
 861         )
 862
 863     def _create_default_const_field_class(self, *args, **kwargs):
 864         # Create a struct to contain the variant and its selector else we can't
 865         # create the non-const field necessary to get the the const field_class
 866         struct_fc = self._tc.create_structure_field_class()
 867         struct_fc.append_member('selecteux', self._selector_fc)
 868         variant_fc = self._tc.create_variant_field_class(
 869             *args, selector_fc=self._selector_fc
 870         )
 871         variant_fc.append_option(
 872             'a', self._tc.create_signed_integer_field_class(32), self._ranges1
 873         )
 874         struct_fc.append_member('variant', variant_fc, **kwargs)
 875
 876         return _create_const_field_class(self._tc, struct_fc, self._const_value_setter)[
 877             'variant'
 878         ].field_class
 879
 880     def setUp(self):
 881         self._tc = get_default_trace_class()
 882         self._spec_set_up()
 883         self._fc = self._create_default_field_class()
 884
 885     def test_create_default(self):
 886         self.assertIsNotNone(self._fc)
 887         self.assertEqual(len(self._fc.user_attributes), 0)
 888
 889     def test_append_element(self):
 890         str_field_class = self._tc.create_string_field_class()
 891         self._fc.append_option('str', str_field_class, self._ranges1)
 892         opt = self._fc['str']
 893         self.assertEqual(opt.field_class.addr, str_field_class.addr)
 894         self.assertEqual(opt.name, 'str')
 895         self.assertEqual(opt.ranges.addr, self._ranges1.addr)
 896
 897     def test_const_append(self):
 898         fc_const = self._create_default_const_field_class()
 899         str_field_class = self._tc.create_string_field_class()
 900         with self.assertRaises(AttributeError):
 901             fc_const.append_option('str', str_field_class, self._ranges1)
 902
 903     def test_append_element_kwargs(self):
 904         int_field_class = self._tc.create_signed_integer_field_class(32)
 905         self._fc.append_option(
 906             name='int32', field_class=int_field_class, ranges=self._ranges1
 907         )
 908         opt = self._fc['int32']
 909         self.assertEqual(opt.field_class.addr, int_field_class.addr)
 910         self.assertEqual(opt.name, 'int32')
 911         self.assertEqual(opt.ranges.addr, self._ranges1.addr)
 912
 913     def test_append_element_invalid_name(self):
 914         sub_fc = self._tc.create_string_field_class()
 915
 916         with self.assertRaises(TypeError):
 917             self._fc.append_option(self._fc, 23, sub_fc)
 918
 919     def test_append_element_invalid_field_class(self):
 920         with self.assertRaises(TypeError):
 921             self._fc.append_option(self._fc, 'yes', object())
 922
 923     def test_append_element_invalid_ranges(self):
 924         sub_fc = self._tc.create_string_field_class()
 925
 926         with self.assertRaises(TypeError):
 927             self._fc.append_option(self._fc, sub_fc, 'lel')
 928
 929     def test_append_element_dup_name(self):
 930         sub_fc1 = self._tc.create_string_field_class()
 931         sub_fc2 = self._tc.create_string_field_class()
 932
 933         with self.assertRaises(ValueError):
 934             self._fc.append_option('yes', sub_fc1, self._ranges1)
 935             self._fc.append_option('yes', sub_fc2, self._ranges2)
 936
 937     def test_append_element_invalid_ranges_signedness(self):
 938         sub_fc = self._tc.create_string_field_class()
 939
 940         with self.assertRaises(TypeError):
 941             self._fc.append_option(self._fc, sub_fc, self._inval_ranges)
 942
 943     def test_user_attributes(self):
 944         self._fc.append_option(
 945             'c',
 946             self._tc.create_string_field_class(),
 947             self._ranges1,
 948             user_attributes={'salut': 23},
 949         )
 950         self.assertEqual(self._fc['c'].user_attributes, {'salut': 23})
 951         self.assertIs(type(self._fc.user_attributes), bt2_value.MapValue)
 952
 953     def test_const_user_attributes(self):
 954         fc_const = self._create_default_const_field_class()
 955         self.assertIs(type(fc_const.user_attributes), bt2_value._MapValueConst)
 956
 957     def test_invalid_user_attributes(self):
 958         with self.assertRaises(TypeError):
 959             self._fc.append_option(
 960                 'c',
 961                 self._tc.create_string_field_class(),
 962                 self._ranges1,
 963                 user_attributes=object(),
 964             )
 965
 966     def test_invalid_user_attributes_value_type(self):
 967         with self.assertRaises(TypeError):
 968             self._fc.append_option(
 969                 'c',
 970                 self._tc.create_string_field_class(),
 971                 self._ranges1,
 972                 user_attributes=23,
 973             )
 974
 975     def test_iadd(self):
 976         a_field_class = self._tc.create_single_precision_real_field_class()
 977         self._fc.append_option('a_float', a_field_class, self._ranges1)
 978         c_field_class = self._tc.create_string_field_class()
 979         d_field_class = self._tc.create_signed_enumeration_field_class(
 980             field_value_range=32
 981         )
 982         self._fc += [
 983             ('c_string', c_field_class, self._ranges2),
 984             ('d_enum', d_field_class, self._ranges3),
 985         ]
 986         self.assertEqual(self._fc['a_float'].field_class.addr, a_field_class.addr)
 987         self.assertEqual(self._fc['a_float'].name, 'a_float')
 988         self.assertEqual(self._fc['a_float'].ranges, self._ranges1)
 989         self.assertEqual(self._fc['c_string'].field_class.addr, c_field_class.addr)
 990         self.assertEqual(self._fc['c_string'].name, 'c_string')
 991         self.assertEqual(self._fc['c_string'].ranges, self._ranges2)
 992         self.assertEqual(self._fc['d_enum'].field_class.addr, d_field_class.addr)
 993         self.assertEqual(self._fc['d_enum'].name, 'd_enum')
 994         self.assertEqual(self._fc['d_enum'].ranges, self._ranges3)
 995
 996     def test_const_iadd(self):
 997         fc_const = self._create_default_const_field_class()
 998         a_field_class = self._tc.create_single_precision_real_field_class()
 999         with self.assertRaises(TypeError):
1000             fc_const += [('a_float', a_field_class, self._ranges1)]
1001
1002     def test_bool_op(self):
1003         self.assertFalse(self._fc)
1004         self._fc.append_option('a', self._tc.create_string_field_class(), self._ranges1)
1005         self.assertTrue(self._fc)
1006
1007     def test_len(self):
1008         self._fc.append_option('a', self._tc.create_string_field_class(), self._ranges1)
1009         self._fc.append_option('b', self._tc.create_string_field_class(), self._ranges2)
1010         self._fc.append_option('c', self._tc.create_string_field_class(), self._ranges3)
1011         self.assertEqual(len(self._fc), 3)
1012
1013     def test_getitem(self):
1014         a_fc = self._tc.create_signed_integer_field_class(32)
1015         b_fc = self._tc.create_string_field_class()
1016         c_fc = self._tc.create_single_precision_real_field_class()
1017         self._fc.append_option('a', a_fc, self._ranges1)
1018         self._fc.append_option('b', b_fc, self._ranges2)
1019         self._fc.append_option('c', c_fc, self._ranges3)
1020         self.assertEqual(self._fc['b'].field_class.addr, b_fc.addr)
1021         self.assertEqual(self._fc['b'].name, 'b')
1022         self.assertEqual(self._fc['b'].ranges.addr, self._ranges2.addr)
1023
1024     def test_option_field_class(self):
1025         a_fc = self._tc.create_signed_integer_field_class(32)
1026         self._fc.append_option('a', a_fc, self._ranges1)
1027         self.assertIs(
1028             type(self._fc['a'].field_class), bt2_field_class._SignedIntegerFieldClass
1029         )
1030
1031     def test_const_option_field_class(self):
1032         fc_const = self._create_default_const_field_class()
1033         self.assertIs(
1034             type(fc_const['a'].field_class),
1035             bt2_field_class._SignedIntegerFieldClassConst,
1036         )
1037
1038     def test_getitem_invalid_key_type(self):
1039         with self.assertRaises(TypeError):
1040             self._fc[0]
1041
1042     def test_getitem_invalid_key(self):
1043         with self.assertRaises(KeyError):
1044             self._fc['no way']
1045
1046     def test_contains(self):
1047         self.assertFalse('a' in self._fc)
1048         self._fc.append_option('a', self._tc.create_string_field_class(), self._ranges1)
1049         self.assertTrue('a' in self._fc)
1050
1051     def test_iter(self):
1052         a_fc = self._tc.create_signed_integer_field_class(32)
1053         b_fc = self._tc.create_string_field_class()
1054         c_fc = self._tc.create_single_precision_real_field_class()
1055         opts = (
1056             ('a', a_fc, self._ranges1),
1057             ('b', b_fc, self._ranges2),
1058             ('c', c_fc, self._ranges3),
1059         )
1060
1061         for opt in opts:
1062             self._fc.append_option(*opt)
1063
1064         for (name, opt), test_opt in zip(self._fc.items(), opts):
1065             self.assertEqual(opt.name, test_opt[0])
1066             self.assertEqual(name, opt.name)
1067             self.assertEqual(opt.field_class.addr, test_opt[1].addr)
1068             self.assertEqual(opt.ranges.addr, test_opt[2].addr)
1069
1070     def test_at_index(self):
1071         a_fc = self._tc.create_signed_integer_field_class(32)
1072         b_fc = self._tc.create_string_field_class()
1073         c_fc = self._tc.create_single_precision_real_field_class()
1074         self._fc.append_option('c', c_fc, self._ranges1)
1075         self._fc.append_option('a', a_fc, self._ranges2)
1076         self._fc.append_option('b', b_fc, self._ranges3)
1077         self.assertEqual(self._fc.option_at_index(1).field_class.addr, a_fc.addr)
1078         self.assertEqual(self._fc.option_at_index(1).name, 'a')
1079         self.assertEqual(self._fc.option_at_index(1).ranges.addr, self._ranges2.addr)
1080
1081     def test_at_index_invalid(self):
1082         self._fc.append_option(
1083             'c', self._tc.create_signed_integer_field_class(32), self._ranges3
1084         )
1085
1086         with self.assertRaises(TypeError):
1087             self._fc.option_at_index('yes')
1088
1089     def test_at_index_out_of_bounds_after(self):
1090         self._fc.append_option(
1091             'c', self._tc.create_signed_integer_field_class(32), self._ranges3
1092         )
1093
1094         with self.assertRaises(IndexError):
1095             self._fc.option_at_index(len(self._fc))
1096
1097     def _fill_default_fc_for_field_path_test(self):
1098         # Create something equivalent to:
1099         #
1100         # struct outer_struct_fc {
1101         #   real foo;
1102         #   struct inner_struct_fc {
1103         #     [u]int64_t selector;
1104         #     string bar;
1105         #     string baz;
1106         #     variant <selector> {
1107         #       real a;     // selected with self._ranges1
1108         #       int21_t b;  // selected with self._ranges2
1109         #       uint34_t c; // selected with self._ranges3
1110         #     } variant;
1111         #   } inner_struct[2];
1112         # };
1113         self._fc.append_option(
1114             'a', self._tc.create_single_precision_real_field_class(), self._ranges1
1115         )
1116         self._fc.append_option(
1117             'b', self._tc.create_signed_integer_field_class(21), self._ranges2
1118         )
1119         self._fc.append_option(
1120             'c', self._tc.create_unsigned_integer_field_class(34), self._ranges3
1121         )
1122
1123         foo_fc = self._tc.create_single_precision_real_field_class()
1124         bar_fc = self._tc.create_string_field_class()
1125         baz_fc = self._tc.create_string_field_class()
1126
1127         inner_struct_fc = self._tc.create_structure_field_class()
1128         inner_struct_fc.append_member('selector', self._selector_fc)
1129         inner_struct_fc.append_member('bar', bar_fc)
1130         inner_struct_fc.append_member('baz', baz_fc)
1131         inner_struct_fc.append_member('variant', self._fc)
1132
1133         inner_struct_array_fc = self._tc.create_static_array_field_class(
1134             inner_struct_fc, 2
1135         )
1136
1137         outer_struct_fc = self._tc.create_structure_field_class()
1138         outer_struct_fc.append_member('foo', foo_fc)
1139         outer_struct_fc.append_member('inner_struct', inner_struct_array_fc)
1140
1141         # The path to the selector field is resolved when the sequence is
1142         # actually used, for example in a packet context.
1143         self._tc.create_stream_class(
1144             supports_packets=True, packet_context_field_class=outer_struct_fc
1145         )
1146
1147     def test_selector_field_path_length(self):
1148         self._fill_default_fc_for_field_path_test()
1149         self.assertEqual(len(self._fc.selector_field_path), 3)
1150
1151     def test_selector_field_path_iter(self):
1152         self._fill_default_fc_for_field_path_test()
1153         path_items = list(self._fc.selector_field_path)
1154
1155         self.assertEqual(len(path_items), 3)
1156
1157         self.assertIsInstance(path_items[0], bt2._IndexFieldPathItem)
1158         self.assertEqual(path_items[0].index, 1)
1159
1160         self.assertIsInstance(path_items[1], bt2._CurrentArrayElementFieldPathItem)
1161
1162         self.assertIsInstance(path_items[2], bt2._IndexFieldPathItem)
1163         self.assertEqual(path_items[2].index, 0)
1164
1165     def test_selector_field_path_root_scope(self):
1166         self._fill_default_fc_for_field_path_test()
1167         self.assertEqual(
1168             self._fc.selector_field_path.root_scope, bt2.FieldPathScope.PACKET_CONTEXT
1169         )
1170
1171
1172 class VariantFieldClassWithUnsignedSelectorTestCase(
1173     _VariantFieldClassWithSelectorTestCase, unittest.TestCase
1174 ):
1175     def _spec_set_up(self):
1176         self._ranges1 = bt2.UnsignedIntegerRangeSet([(1, 4), (18, 47)])
1177         self._ranges2 = bt2.UnsignedIntegerRangeSet([(5, 5)])
1178         self._ranges3 = bt2.UnsignedIntegerRangeSet([(8, 16), (48, 99)])
1179         self._inval_ranges = bt2.SignedIntegerRangeSet([(-8, 16), (48, 99)])
1180         self._selector_fc = self._tc.create_unsigned_integer_field_class()
1181
1182
1183 class VariantFieldClassWithSignedSelectorTestCase(
1184     _VariantFieldClassWithSelectorTestCase, unittest.TestCase
1185 ):
1186     def _spec_set_up(self):
1187         self._ranges1 = bt2.SignedIntegerRangeSet([(-10, -4), (18, 47)])
1188         self._ranges2 = bt2.SignedIntegerRangeSet([(-3, -3)])
1189         self._ranges3 = bt2.SignedIntegerRangeSet([(8, 16), (48, 99)])
1190         self._inval_ranges = bt2.UnsignedIntegerRangeSet([(8, 16), (48, 99)])
1191         self._selector_fc = self._tc.create_signed_integer_field_class()
1192
1193
1194 class _ArrayFieldClassTestCase:
1195     def test_attr_element_field_class(self):
1196         fc = self._create_array()
1197         self.assertIs(
1198             type(fc.element_field_class), bt2_field_class._SignedIntegerFieldClass
1199         )
1200
1201     def test_const_attr_element_field_class(self):
1202         fc = self._create_const_array()
1203         self.assertIs(
1204             type(fc.element_field_class), bt2_field_class._SignedIntegerFieldClassConst
1205         )
1206
1207
1208 class StaticArrayFieldClassTestCase(_ArrayFieldClassTestCase, unittest.TestCase):
1209     @staticmethod
1210     def _const_value_setter(field):
1211         field.value = [9] * 45
1212
1213     def _create_array(self):
1214         return self._tc.create_static_array_field_class(self._elem_fc, 45)
1215
1216     def _create_const_array(self):
1217         fc = self._tc.create_static_array_field_class(self._elem_fc, 45)
1218         return _create_const_field_class(self._tc, fc, self._const_value_setter)
1219
1220     def setUp(self):
1221         self._tc = get_default_trace_class()
1222         self._elem_fc = self._tc.create_signed_integer_field_class(23)
1223
1224     def test_create_default(self):
1225         fc = self._tc.create_static_array_field_class(self._elem_fc, 45)
1226         self.assertEqual(fc.element_field_class.addr, self._elem_fc.addr)
1227         self.assertEqual(fc.length, 45)
1228         self.assertEqual(len(fc.user_attributes), 0)
1229
1230     def test_create_invalid_elem_field_class(self):
1231         with self.assertRaises(TypeError):
1232             self._tc.create_static_array_field_class(object(), 45)
1233
1234     def test_create_invalid_length(self):
1235         with self.assertRaises(ValueError):
1236             self._tc.create_static_array_field_class(
1237                 self._tc.create_string_field_class(), -17
1238             )
1239
1240     def test_create_invalid_length_type(self):
1241         with self.assertRaises(TypeError):
1242             self._tc.create_static_array_field_class(
1243                 self._tc.create_string_field_class(), 'the length'
1244             )
1245
1246
1247 class DynamicArrayFieldClassTestCase(_ArrayFieldClassTestCase, unittest.TestCase):
1248     @staticmethod
1249     def _const_value_setter(field):
1250         field.value = []
1251
1252     def _create_array(self):
1253         return self._tc.create_dynamic_array_field_class(self._elem_fc)
1254
1255     def _create_const_array(self):
1256         fc = self._tc.create_dynamic_array_field_class(self._elem_fc)
1257         return _create_const_field_class(self._tc, fc, self._const_value_setter)
1258
1259     def setUp(self):
1260         self._tc = get_default_trace_class()
1261         self._elem_fc = self._tc.create_signed_integer_field_class(23)
1262         self._len_fc = self._tc.create_unsigned_integer_field_class(12)
1263
1264     def test_create_default(self):
1265         fc = self._tc.create_dynamic_array_field_class(self._elem_fc)
1266         self.assertEqual(fc.element_field_class.addr, self._elem_fc.addr)
1267         self.assertIsNone(fc.length_field_path, None)
1268         self.assertEqual(len(fc.user_attributes), 0)
1269
1270     def _create_field_class_for_field_path_test(self):
1271         # Create something a field class that is equivalent to:
1272         #
1273         # struct outer_struct_fc {
1274         #   real foo;
1275         #   struct inner_struct_fc {
1276         #     string bar;
1277         #     string baz;
1278         #     uint12_t len;
1279         #     uint23_t dyn_array[len];
1280         #   } inner_struct[2];
1281         # };
1282
1283         fc = self._tc.create_dynamic_array_field_class(self._elem_fc, self._len_fc)
1284
1285         foo_fc = self._tc.create_single_precision_real_field_class()
1286         bar_fc = self._tc.create_string_field_class()
1287         baz_fc = self._tc.create_string_field_class()
1288
1289         inner_struct_fc = self._tc.create_structure_field_class()
1290         inner_struct_fc.append_member('bar', bar_fc)
1291         inner_struct_fc.append_member('baz', baz_fc)
1292         inner_struct_fc.append_member('len', self._len_fc)
1293         inner_struct_fc.append_member('dyn_array', fc)
1294
1295         inner_struct_array_fc = self._tc.create_static_array_field_class(
1296             inner_struct_fc, 2
1297         )
1298
1299         outer_struct_fc = self._tc.create_structure_field_class()
1300         outer_struct_fc.append_member('foo', foo_fc)
1301         outer_struct_fc.append_member('inner_struct', inner_struct_array_fc)
1302
1303         # The path to the length field is resolved when the sequence is
1304         # actually used, for example in a packet context.
1305         self._tc.create_stream_class(
1306             packet_context_field_class=outer_struct_fc, supports_packets=True
1307         )
1308
1309         return fc
1310
1311     def test_field_path_len(self):
1312         fc = self._create_field_class_for_field_path_test()
1313         self.assertEqual(len(fc.length_field_path), 3)
1314
1315     def test_field_path_iter(self):
1316         fc = self._create_field_class_for_field_path_test()
1317         path_items = list(fc.length_field_path)
1318
1319         self.assertEqual(len(path_items), 3)
1320
1321         self.assertIsInstance(path_items[0], bt2._IndexFieldPathItem)
1322         self.assertEqual(path_items[0].index, 1)
1323
1324         self.assertIsInstance(path_items[1], bt2._CurrentArrayElementFieldPathItem)
1325
1326         self.assertIsInstance(path_items[2], bt2._IndexFieldPathItem)
1327         self.assertEqual(path_items[2].index, 2)
1328
1329     def test_field_path_root_scope(self):
1330         fc = self._create_field_class_for_field_path_test()
1331         self.assertEqual(
1332             fc.length_field_path.root_scope, bt2.FieldPathScope.PACKET_CONTEXT
1333         )
1334
1335     def test_create_invalid_field_class(self):
1336         with self.assertRaises(TypeError):
1337             self._tc.create_dynamic_array_field_class(object())
1338
1339     def test_create_invalid_length_type(self):
1340         with self.assertRaises(TypeError):
1341             self._tc.create_dynamic_array_field_class(
1342                 self._tc.create_string_field_class(), 17
1343             )
1344
1345
1346 if __name__ == "__main__":
1347     unittest.main()