Move to kernel style SPDX license identifiers
[babeltrace.git] / tests / bindings / python / bt2 / test_field_class.py
index 2b05f0096cfab2bc8213d98834c6bc2033e0b377..4f6aab2415309fb4acf180ab4243dfa121da2c5b 100644 (file)
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2019 EfficiOS Inc.
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; only version 2
-# of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
-#
 
-import bt2.field
 import unittest
 import bt2
-import collections
-from utils import get_default_trace_class
+from utils import get_default_trace_class, TestOutputPortMessageIterator
+from bt2 import value as bt2_value
+from bt2 import field_class as bt2_field_class
+
+
+def _create_stream(tc, ctx_field_classes):
+    packet_context_fc = tc.create_structure_field_class()
+    for name, fc in ctx_field_classes:
+        packet_context_fc.append_member(name, fc)
+
+    trace = tc()
+    stream_class = tc.create_stream_class(
+        packet_context_field_class=packet_context_fc, supports_packets=True
+    )
+
+    stream = trace.create_stream(stream_class)
+    return stream
+
+
+def _create_const_field_class(tc, field_class, value_setter_fn):
+    field_name = 'const field'
+
+    class MyIter(bt2._UserMessageIterator):
+        def __init__(self, config, self_port_output):
+            nonlocal field_class
+            nonlocal value_setter_fn
+            stream = _create_stream(tc, [(field_name, field_class)])
+            packet = stream.create_packet()
+
+            value_setter_fn(packet.context_field[field_name])
+
+            self._msgs = [
+                self._create_stream_beginning_message(stream),
+                self._create_packet_beginning_message(packet),
+            ]
+
+        def __next__(self):
+            if len(self._msgs) == 0:
+                raise StopIteration
+
+            return self._msgs.pop(0)
+
+    class MySrc(bt2._UserSourceComponent, message_iterator_class=MyIter):
+        def __init__(self, config, params, obj):
+            self._add_output_port('out', params)
+
+    graph = bt2.Graph()
+    src_comp = graph.add_component(MySrc, 'my_source', None)
+    msg_iter = TestOutputPortMessageIterator(graph, src_comp.output_ports['out'])
+
+    # Ignore first message, stream beginning
+    _ = next(msg_iter)
+    packet_beg_msg = next(msg_iter)
+
+    return packet_beg_msg.packet.context_field[field_name].cls
+
+
+class _TestFieldClass:
+    def test_create_user_attributes(self):
+        fc = self._create_default_field_class(user_attributes={'salut': 23})
+        self.assertEqual(fc.user_attributes, {'salut': 23})
+        self.assertIs(type(fc.user_attributes), bt2_value.MapValue)
+
+    def test_const_create_user_attributes(self):
+        fc = self._create_default_const_field_class(user_attributes={'salut': 23})
+        self.assertEqual(fc.user_attributes, {'salut': 23})
+        self.assertIs(type(fc.user_attributes), bt2_value._MapValueConst)
+
+    def test_create_invalid_user_attributes(self):
+        with self.assertRaises(TypeError):
+            self._create_default_field_class(user_attributes=object())
+
+    def test_create_invalid_user_attributes_value_type(self):
+        with self.assertRaises(TypeError):
+            self._create_default_field_class(user_attributes=23)
+
+
+class BoolFieldClassTestCase(_TestFieldClass, unittest.TestCase):
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = False
+
+    def _create_default_field_class(self, **kwargs):
+        tc = get_default_trace_class()
+        return tc.create_bool_field_class(**kwargs)
+
+    def _create_default_const_field_class(self, *args, **kwargs):
+        tc = get_default_trace_class()
+        fc = tc.create_bool_field_class(*args, **kwargs)
+        return _create_const_field_class(tc, fc, self._const_value_setter)
+
+    def setUp(self):
+        self._fc = self._create_default_field_class()
+        self._fc_const = self._create_default_const_field_class()
+
+    def test_create_default(self):
+        self.assertIsNotNone(self._fc)
+        self.assertEqual(len(self._fc.user_attributes), 0)
+
+
+class BitArrayFieldClassTestCase(_TestFieldClass, unittest.TestCase):
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = []
+
+    def _create_field_class(self, *args, **kwargs):
+        tc = get_default_trace_class()
+        return tc.create_bit_array_field_class(*args, **kwargs)
+
+    def _create_default_field_class(self, **kwargs):
+        return self._create_field_class(17, **kwargs)
+
+    def _create_default_const_field_class(self, *args, **kwargs):
+        tc = get_default_trace_class()
+        fc = tc.create_bit_array_field_class(17, **kwargs)
+        return _create_const_field_class(tc, fc, self._const_value_setter)
+
+    def setUp(self):
+        self._fc = self._create_default_field_class()
+
+    def test_create_default(self):
+        self.assertIsNotNone(self._fc)
+        self.assertEqual(len(self._fc.user_attributes), 0)
+
+    def test_create_length_out_of_range(self):
+        with self.assertRaises(ValueError):
+            self._create_field_class(65)
+
+    def test_create_length_zero(self):
+        with self.assertRaises(ValueError):
+            self._create_field_class(0)
+
+    def test_create_length_invalid_type(self):
+        with self.assertRaises(TypeError):
+            self._create_field_class('lel')
+
+    def test_length_prop(self):
+        self.assertEqual(self._fc.length, 17)
 
 
 class _TestIntegerFieldClassProps:
     def test_create_default(self):
-        fc = self._create_func()
+        fc = self._create_default_field_class()
         self.assertEqual(fc.field_value_range, 64)
         self.assertEqual(fc.preferred_display_base, bt2.IntegerDisplayBase.DECIMAL)
+        self.assertEqual(len(fc.user_attributes), 0)
 
     def test_create_range(self):
-        fc = self._create_func(field_value_range=35)
+        fc = self._create_field_class(field_value_range=35)
         self.assertEqual(fc.field_value_range, 35)
 
-        fc = self._create_func(36)
+        fc = self._create_field_class(36)
         self.assertEqual(fc.field_value_range, 36)
 
     def test_create_invalid_range(self):
         with self.assertRaises(TypeError):
-            self._create_func('yes')
+            self._create_field_class('yes')
 
         with self.assertRaises(TypeError):
-            self._create_func(field_value_range='yes')
+            self._create_field_class(field_value_range='yes')
 
         with self.assertRaises(ValueError):
-            self._create_func(field_value_range=-2)
+            self._create_field_class(field_value_range=-2)
 
         with self.assertRaises(ValueError):
-            self._create_func(field_value_range=0)
+            self._create_field_class(field_value_range=0)
 
     def test_create_base(self):
-        fc = self._create_func(
+        fc = self._create_field_class(
             preferred_display_base=bt2.IntegerDisplayBase.HEXADECIMAL
         )
         self.assertEqual(fc.preferred_display_base, bt2.IntegerDisplayBase.HEXADECIMAL)
 
     def test_create_invalid_base_type(self):
         with self.assertRaises(TypeError):
-            self._create_func(preferred_display_base='yes')
+            self._create_field_class(preferred_display_base='yes')
 
     def test_create_invalid_base_value(self):
         with self.assertRaises(ValueError):
-            self._create_func(preferred_display_base=444)
+            self._create_field_class(preferred_display_base=444)
 
     def test_create_full(self):
-        fc = self._create_func(24, preferred_display_base=bt2.IntegerDisplayBase.OCTAL)
+        fc = self._create_field_class(
+            24, preferred_display_base=bt2.IntegerDisplayBase.OCTAL
+        )
         self.assertEqual(fc.field_value_range, 24)
         self.assertEqual(fc.preferred_display_base, bt2.IntegerDisplayBase.OCTAL)
 
 
-class IntegerFieldClassTestCase(_TestIntegerFieldClassProps, unittest.TestCase):
-    def setUp(self):
-        self._tc = get_default_trace_class()
-        self._create_func = self._tc.create_signed_integer_field_class
+class SignedIntegerFieldClassTestCase(
+    _TestIntegerFieldClassProps, _TestFieldClass, unittest.TestCase
+):
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = -18
 
+    def _create_field_class(self, *args, **kwargs):
+        tc = get_default_trace_class()
+        return tc.create_signed_integer_field_class(*args, **kwargs)
 
-class RealFieldClassTestCase(unittest.TestCase):
-    def setUp(self):
-        self._tc = get_default_trace_class()
+    def _create_default_const_field_class(self, *args, **kwargs):
+        tc = get_default_trace_class()
+        fc = tc.create_signed_integer_field_class(*args, **kwargs)
+        return _create_const_field_class(tc, fc, self._const_value_setter)
+
+    _create_default_field_class = _create_field_class
+
+
+class UnsignedIntegerFieldClassTestCase(
+    _TestIntegerFieldClassProps, _TestFieldClass, unittest.TestCase
+):
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = 18
+
+    def _create_field_class(self, *args, **kwargs):
+        tc = get_default_trace_class()
+        return tc.create_unsigned_integer_field_class(*args, **kwargs)
+
+    def _create_default_const_field_class(self, *args, **kwargs):
+        tc = get_default_trace_class()
+        fc = tc.create_signed_integer_field_class(*args, **kwargs)
+        return _create_const_field_class(tc, fc, self._const_value_setter)
+
+    _create_default_field_class = _create_field_class
+
+
+class SingleRealFieldClassTestCase(_TestFieldClass, unittest.TestCase):
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = -18.0
+
+    def _create_field_class(self, *args, **kwargs):
+        tc = get_default_trace_class()
+        return tc.create_single_precision_real_field_class(*args, **kwargs)
+
+    def _create_default_const_field_class(self, *args, **kwargs):
+        tc = get_default_trace_class()
+        fc = tc.create_single_precision_real_field_class(*args, **kwargs)
+        return _create_const_field_class(tc, fc, self._const_value_setter)
+
+    _create_default_field_class = _create_field_class
 
     def test_create_default(self):
-        fc = self._tc.create_real_field_class()
-        self.assertFalse(fc.is_single_precision)
+        fc = self._create_field_class()
+        self.assertEqual(len(fc.user_attributes), 0)
 
-    def test_create_is_single_precision(self):
-        fc = self._tc.create_real_field_class(is_single_precision=True)
-        self.assertTrue(fc.is_single_precision)
 
-    def test_create_invalid_is_single_precision(self):
-        with self.assertRaises(TypeError):
-            self._tc.create_real_field_class(is_single_precision='hohoho')
+class DoubleRealFieldClassTestCase(_TestFieldClass, unittest.TestCase):
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = -18.0
+
+    def _create_field_class(self, *args, **kwargs):
+        tc = get_default_trace_class()
+        return tc.create_double_precision_real_field_class(*args, **kwargs)
+
+    def _create_default_const_field_class(self, *args, **kwargs):
+        tc = get_default_trace_class()
+        fc = tc.create_double_precision_real_field_class(*args, **kwargs)
+        return _create_const_field_class(tc, fc, self._const_value_setter)
+
+    _create_default_field_class = _create_field_class
+
+    def test_create_default(self):
+        fc = self._create_field_class()
+        self.assertEqual(len(fc.user_attributes), 0)
 
 
 # Converts an _EnumerationFieldClassMapping to a list of ranges:
@@ -103,13 +285,13 @@ def enum_mapping_to_set(mapping):
 
 class _EnumerationFieldClassTestCase(_TestIntegerFieldClassProps):
     def setUp(self):
-        self._tc = get_default_trace_class()
         self._spec_set_up()
-        self._fc = self._create_func()
+        self._fc = self._create_default_field_class()
+        self._fc_const = self._create_default_const_field_class()
 
     def test_create_from_invalid_type(self):
         with self.assertRaises(TypeError):
-            self._create_func('coucou')
+            self._create_field_class('coucou')
 
     def test_add_mapping_simple(self):
         self._fc.add_mapping('hello', self._ranges1)
@@ -117,6 +299,10 @@ class _EnumerationFieldClassTestCase(_TestIntegerFieldClassProps):
         self.assertEqual(mapping.label, 'hello')
         self.assertEqual(mapping.ranges, self._ranges1)
 
+    def test_const_add_mapping(self):
+        with self.assertRaises(AttributeError):
+            self._fc_const.add_mapping('hello', self._ranges1)
+
     def test_add_mapping_simple_kwargs(self):
         self._fc.add_mapping(label='hello', ranges=self._ranges1)
         mapping = self._fc['hello']
@@ -132,7 +318,7 @@ class _EnumerationFieldClassTestCase(_TestIntegerFieldClassProps):
             self._fc.add_mapping('allo', 'meow')
 
     def test_add_mapping_dup_label(self):
-        with self.assertRaises(bt2.Error):
+        with self.assertRaises(ValueError):
             self._fc.add_mapping('a', self._ranges1)
             self._fc.add_mapping('a', self._ranges2)
 
@@ -153,6 +339,10 @@ class _EnumerationFieldClassTestCase(_TestIntegerFieldClassProps):
         self.assertEqual(self._fc['e'].label, 'e')
         self.assertEqual(self._fc['e'].ranges, self._ranges3)
 
+    def test_const_iadd(self):
+        with self.assertRaises(TypeError):
+            self._fc_const += [('d', self._ranges2), ('e', self._ranges3)]
+
     def test_bool_op(self):
         self.assertFalse(self._fc)
         self._fc.add_mapping('a', self._ranges1)
@@ -171,6 +361,8 @@ class _EnumerationFieldClassTestCase(_TestIntegerFieldClassProps):
         mapping = self._fc['a']
         self.assertEqual(mapping.label, 'a')
         self.assertEqual(mapping.ranges, self._ranges1)
+        self.assertIs(type(mapping), self._MAPPING_CLASS)
+        self.assertIs(type(mapping.ranges), self._CONST_RANGE_SET_CLASS)
 
     def test_getitem_nonexistent(self):
         with self.assertRaises(KeyError):
@@ -197,45 +389,98 @@ class _EnumerationFieldClassTestCase(_TestIntegerFieldClassProps):
 
 
 class UnsignedEnumerationFieldClassTestCase(
-    _EnumerationFieldClassTestCase, unittest.TestCase
+    _EnumerationFieldClassTestCase, _TestFieldClass, unittest.TestCase
 ):
+    _MAPPING_CLASS = bt2_field_class._UnsignedEnumerationFieldClassMappingConst
+    _RANGE_SET_CLASS = bt2.UnsignedIntegerRangeSet
+    _CONST_RANGE_SET_CLASS = bt2._UnsignedIntegerRangeSetConst
+
     def _spec_set_up(self):
         self._ranges1 = bt2.UnsignedIntegerRangeSet([(1, 4), (18, 47)])
         self._ranges2 = bt2.UnsignedIntegerRangeSet([(5, 5)])
         self._ranges3 = bt2.UnsignedIntegerRangeSet([(8, 22), (48, 99)])
         self._inval_ranges = bt2.SignedIntegerRangeSet([(-8, -5), (48, 1928)])
         self._value_in_range_1_and_3 = 20
-        self._create_func = self._tc.create_unsigned_enumeration_field_class
+
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = 0
+
+    def _create_field_class(self, *args, **kwargs):
+        tc = get_default_trace_class()
+        return tc.create_unsigned_enumeration_field_class(*args, **kwargs)
+
+    def _create_default_const_field_class(self, *args, **kwargs):
+        tc = get_default_trace_class()
+        fc = tc.create_unsigned_enumeration_field_class(*args, **kwargs)
+        return _create_const_field_class(tc, fc, self._const_value_setter)
+
+    _create_default_field_class = _create_field_class
 
 
 class SignedEnumerationFieldClassTestCase(
-    _EnumerationFieldClassTestCase, unittest.TestCase
+    _EnumerationFieldClassTestCase, _TestFieldClass, unittest.TestCase
 ):
+    _MAPPING_CLASS = bt2_field_class._SignedEnumerationFieldClassMappingConst
+    _RANGE_SET_CLASS = bt2.SignedIntegerRangeSet
+    _CONST_RANGE_SET_CLASS = bt2._SignedIntegerRangeSetConst
+
     def _spec_set_up(self):
         self._ranges1 = bt2.SignedIntegerRangeSet([(-10, -4), (18, 47)])
         self._ranges2 = bt2.SignedIntegerRangeSet([(-3, -3)])
         self._ranges3 = bt2.SignedIntegerRangeSet([(-100, -1), (8, 16), (48, 99)])
         self._inval_ranges = bt2.UnsignedIntegerRangeSet([(8, 16), (48, 99)])
         self._value_in_range_1_and_3 = -7
-        self._create_func = self._tc.create_signed_enumeration_field_class
 
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = 0
 
-class StringFieldClassTestCase(unittest.TestCase):
-    def setUp(self):
+    def _create_field_class(self, *args, **kwargs):
         tc = get_default_trace_class()
-        self._fc = tc.create_string_field_class()
+        return tc.create_signed_enumeration_field_class(*args, **kwargs)
+
+    def _create_default_const_field_class(self, *args, **kwargs):
+        tc = get_default_trace_class()
+        fc = tc.create_signed_enumeration_field_class(*args, **kwargs)
+        return _create_const_field_class(tc, fc, self._const_value_setter)
+
+    _create_default_field_class = _create_field_class
+
+
+class StringFieldClassTestCase(_TestFieldClass, unittest.TestCase):
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = 'chaine'
+
+    def _create_field_class(self, *args, **kwargs):
+        tc = get_default_trace_class()
+        return tc.create_string_field_class(*args, **kwargs)
+
+    def _create_default_const_field_class(self, *args, **kwargs):
+        tc = get_default_trace_class()
+        fc = tc.create_string_field_class(*args, **kwargs)
+        return _create_const_field_class(tc, fc, self._const_value_setter)
+
+    _create_default_field_class = _create_field_class
+
+    def setUp(self):
+        self._fc = self._create_default_field_class()
 
     def test_create_default(self):
         self.assertIsNotNone(self._fc)
+        self.assertEqual(len(self._fc.user_attributes), 0)
 
 
 class _TestElementContainer:
     def setUp(self):
         self._tc = get_default_trace_class()
-        self._fc = self._create_default_fc()
+        self._fc = self._create_default_field_class()
+        self._fc_const = self._create_default_const_field_class()
 
     def test_create_default(self):
         self.assertIsNotNone(self._fc)
+        self.assertEqual(len(self._fc.user_attributes), 0)
 
     def test_append_element(self):
         int_field_class = self._tc.create_signed_integer_field_class(32)
@@ -263,13 +508,30 @@ class _TestElementContainer:
         sub_fc1 = self._tc.create_string_field_class()
         sub_fc2 = self._tc.create_string_field_class()
 
-        with self.assertRaises(bt2.Error):
+        with self.assertRaises(ValueError):
             self._append_element_method(self._fc, 'yes', sub_fc1)
             self._append_element_method(self._fc, 'yes', sub_fc2)
 
+    def test_attr_field_class(self):
+        int_field_class = self._tc.create_signed_integer_field_class(32)
+        self._append_element_method(self._fc, 'int32', int_field_class)
+        field_class = self._fc['int32'].field_class
+
+        self.assertIs(type(field_class), bt2_field_class._SignedIntegerFieldClass)
+
+    def test_const_attr_field_class(self):
+        int_field_class = self._tc.create_signed_integer_field_class(32)
+        self._append_element_method(self._fc, 'int32', int_field_class)
+        field_class = self._fc['int32'].field_class
+        const_fc = _create_const_field_class(
+            self._tc, self._fc, self._const_value_setter
+        )
+        field_class = const_fc['int32'].field_class
+
+        self.assertIs(type(field_class), bt2_field_class._SignedIntegerFieldClassConst)
+
     def test_iadd(self):
-        other_fc = self._create_default_fc()
-        a_field_class = self._tc.create_real_field_class()
+        a_field_class = self._tc.create_single_precision_real_field_class()
         b_field_class = self._tc.create_signed_integer_field_class(17)
         self._append_element_method(self._fc, 'a_float', a_field_class)
         self._append_element_method(self._fc, 'b_int', b_field_class)
@@ -294,6 +556,11 @@ class _TestElementContainer:
         self.assertEqual(self._fc['e_struct'].field_class.addr, e_field_class.addr)
         self.assertEqual(self._fc['e_struct'].name, 'e_struct')
 
+    def test_const_iadd(self):
+        a_field_class = self._tc.create_single_precision_real_field_class()
+        with self.assertRaises(TypeError):
+            self._fc_const += a_field_class
+
     def test_bool_op(self):
         self.assertFalse(self._fc)
         self._append_element_method(self._fc, 'a', self._tc.create_string_field_class())
@@ -308,7 +575,7 @@ class _TestElementContainer:
     def test_getitem(self):
         a_fc = self._tc.create_signed_integer_field_class(32)
         b_fc = self._tc.create_string_field_class()
-        c_fc = self._tc.create_real_field_class()
+        c_fc = self._tc.create_single_precision_real_field_class()
         self._append_element_method(self._fc, 'a', a_fc)
         self._append_element_method(self._fc, 'b', b_fc)
         self._append_element_method(self._fc, 'c', c_fc)
@@ -331,7 +598,7 @@ class _TestElementContainer:
     def test_iter(self):
         a_fc = self._tc.create_signed_integer_field_class(32)
         b_fc = self._tc.create_string_field_class()
-        c_fc = self._tc.create_real_field_class()
+        c_fc = self._tc.create_single_precision_real_field_class()
         elements = (('a', a_fc), ('b', b_fc), ('c', c_fc))
 
         for elem in elements:
@@ -341,11 +608,12 @@ class _TestElementContainer:
             self.assertEqual(element.name, test_elem[0])
             self.assertEqual(name, element.name)
             self.assertEqual(element.field_class.addr, test_elem[1].addr)
+            self.assertEqual(len(element.user_attributes), 0)
 
     def test_at_index(self):
         a_fc = self._tc.create_signed_integer_field_class(32)
         b_fc = self._tc.create_string_field_class()
-        c_fc = self._tc.create_real_field_class()
+        c_fc = self._tc.create_single_precision_real_field_class()
         self._append_element_method(self._fc, 'c', c_fc)
         self._append_element_method(self._fc, 'a', a_fc)
         self._append_element_method(self._fc, 'b', b_fc)
@@ -369,44 +637,350 @@ class _TestElementContainer:
         with self.assertRaises(IndexError):
             self._at_index_method(self._fc, len(self._fc))
 
+    def test_user_attributes(self):
+        self._append_element_method(
+            self._fc,
+            'c',
+            self._tc.create_string_field_class(),
+            user_attributes={'salut': 23},
+        )
+        self.assertEqual(self._fc['c'].user_attributes, {'salut': 23})
+        self.assertIs(type(self._fc.user_attributes), bt2_value.MapValue)
+        self.assertIs(type(self._fc['c'].user_attributes), bt2_value.MapValue)
 
-class StructureFieldClassTestCase(_TestElementContainer, unittest.TestCase):
-    _append_element_method = staticmethod(
-        bt2.field_class._StructureFieldClass.append_member
-    )
-    _at_index_method = staticmethod(
-        bt2.field_class._StructureFieldClass.member_at_index
-    )
+    def test_invalid_user_attributes(self):
+        with self.assertRaises(TypeError):
+            self._append_element_method(
+                self._fc,
+                'c',
+                self._tc.create_string_field_class(),
+                user_attributes=object(),
+            )
+
+    def test_invalid_user_attributes_value_type(self):
+        with self.assertRaises(TypeError):
+            self._append_element_method(
+                self._fc, 'c', self._tc.create_string_field_class(), user_attributes=23
+            )
+
+
+class StructureFieldClassTestCase(
+    _TestFieldClass, _TestElementContainer, unittest.TestCase
+):
+    _append_element_method = staticmethod(bt2._StructureFieldClass.append_member)
+    _at_index_method = staticmethod(bt2._StructureFieldClass.member_at_index)
+
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = {}
+
+    def _create_field_class(self, *args, **kwargs):
+        tc = get_default_trace_class()
+        return tc.create_structure_field_class(*args, **kwargs)
+
+    def _create_default_const_field_class(self, *args, **kwargs):
+        tc = get_default_trace_class()
+        fc = tc.create_structure_field_class(*args, **kwargs)
+        return _create_const_field_class(tc, fc, self._const_value_setter)
+
+    _create_default_field_class = _create_field_class
+
+    def test_const_member_field_class(self):
+        def _real_value_setter(field):
+            field.value = {'real': 0}
+
+        tc = get_default_trace_class()
+        fc = tc.create_structure_field_class()
+        member_fc = self._tc.create_single_precision_real_field_class()
+        fc.append_member('real', member_fc)
+        const_fc = _create_const_field_class(tc, fc, _real_value_setter)
+
+        self.assertIs(
+            type(const_fc['real'].field_class),
+            bt2_field_class._SinglePrecisionRealFieldClassConst,
+        )
+
+    def test_member_field_class(self):
+        tc = get_default_trace_class()
+        fc = tc.create_structure_field_class()
+        member_fc = self._tc.create_single_precision_real_field_class()
+        fc.append_member('real', member_fc)
+
+        self.assertIs(
+            type(fc['real'].field_class), bt2_field_class._SinglePrecisionRealFieldClass
+        )
+
+
+class OptionWithoutSelectorFieldClassTestCase(_TestFieldClass, unittest.TestCase):
+    @staticmethod
+    def _const_value_setter(field):
+        field.has_field = True
+        field.value = 12
+
+    def _create_default_field_class(self, *args, **kwargs):
+        return self._tc.create_option_without_selector_field_class(
+            self._content_fc, *args, **kwargs
+        )
+
+    def _create_default_const_field_class(self, *args, **kwargs):
+        fc = self._tc.create_option_without_selector_field_class(
+            self._content_fc, *args, **kwargs
+        )
+        return _create_const_field_class(self._tc, fc, self._const_value_setter)
+
+    def setUp(self):
+        self._tc = get_default_trace_class()
+        self._content_fc = self._tc.create_signed_integer_field_class(23)
+
+    def test_create_default(self):
+        fc = self._create_default_field_class()
+        self.assertEqual(fc.field_class.addr, self._content_fc.addr)
+        self.assertEqual(len(fc.user_attributes), 0)
+
+    def test_create_invalid_field_class(self):
+        with self.assertRaises(TypeError):
+            self._tc.create_option_without_selector_field_class(object())
+
+    def test_attr_field_class(self):
+        fc = self._create_default_field_class()
+        self.assertIs(type(fc.field_class), bt2_field_class._SignedIntegerFieldClass)
+
+    def test_const_attr_field_class(self):
+        fc = self._create_default_const_field_class()
+        self.assertIs(
+            type(fc.field_class), bt2_field_class._SignedIntegerFieldClassConst
+        )
+
+
+class _OptionWithSelectorFieldClassTestCase(_TestFieldClass):
+    @staticmethod
+    def _const_value_setter(field):
+        field['opt'].has_field = True
+        field['opt'].value = 12
+
+    def _create_default_const_field_class(self, *args, **kwargs):
+        # Create a struct to contain the option and its selector else we can't
+        # create the non-const field necessary to get the the const field_class
+        struct_fc = self._tc.create_structure_field_class()
+        struct_fc.append_member('selecteux', self._tag_fc)
+        opt_fc = self._create_default_field_class(*args, **kwargs)
+        struct_fc.append_member('opt', opt_fc)
+
+        return _create_const_field_class(self._tc, struct_fc, self._const_value_setter)[
+            'opt'
+        ].field_class
+
+    def setUp(self):
+        self._tc = get_default_trace_class()
+        self._content_fc = self._tc.create_signed_integer_field_class(23)
+        self._tag_fc = self._create_tag_fc()
+
+    def _create_field_class_for_field_path_test(self):
+        fc = self._create_default_field_class()
+
+        foo_fc = self._tc.create_single_precision_real_field_class()
+        bar_fc = self._tc.create_string_field_class()
+        baz_fc = self._tc.create_string_field_class()
+
+        inner_struct_fc = self._tc.create_structure_field_class()
+        inner_struct_fc.append_member('bar', bar_fc)
+        inner_struct_fc.append_member('baz', baz_fc)
+        inner_struct_fc.append_member('tag', self._tag_fc)
+        inner_struct_fc.append_member('opt', fc)
+
+        opt_struct_array_fc = self._tc.create_option_without_selector_field_class(
+            inner_struct_fc
+        )
+
+        outer_struct_fc = self._tc.create_structure_field_class()
+        outer_struct_fc.append_member('foo', foo_fc)
+        outer_struct_fc.append_member('inner_opt', opt_struct_array_fc)
+
+        # The path to the selector field class is resolved when the
+        # option field class is actually used, for example in a packet
+        # context.
+        self._tc.create_stream_class(
+            packet_context_field_class=outer_struct_fc, supports_packets=True
+        )
+
+        return fc
+
+    def test_field_path_len(self):
+        fc = self._create_field_class_for_field_path_test()
+        self.assertEqual(len(fc.selector_field_path), 3)
+
+    def test_field_path_iter(self):
+        fc = self._create_field_class_for_field_path_test()
+        path_items = list(fc.selector_field_path)
+
+        self.assertEqual(len(path_items), 3)
+
+        self.assertIsInstance(path_items[0], bt2._IndexFieldPathItem)
+        self.assertEqual(path_items[0].index, 1)
+
+        self.assertIsInstance(path_items[1], bt2._CurrentOptionContentFieldPathItem)
+
+        self.assertIsInstance(path_items[2], bt2._IndexFieldPathItem)
+        self.assertEqual(path_items[2].index, 2)
+
+    def test_field_path_root_scope(self):
+        fc = self._create_field_class_for_field_path_test()
+        self.assertEqual(
+            fc.selector_field_path.root_scope, bt2.FieldPathScope.PACKET_CONTEXT
+        )
+
+
+class OptionWithBoolSelectorFieldClassTestCase(
+    _OptionWithSelectorFieldClassTestCase, unittest.TestCase
+):
+    def _create_default_field_class(self, *args, **kwargs):
+        return self._tc.create_option_with_bool_selector_field_class(
+            self._content_fc, self._tag_fc, *args, **kwargs
+        )
+
+    def _create_tag_fc(self):
+        return self._tc.create_bool_field_class()
+
+    def test_create_default(self):
+        fc = self._create_default_field_class()
+        self.assertEqual(fc.field_class.addr, self._content_fc.addr)
+        self.assertFalse(fc.selector_is_reversed)
+        self.assertEqual(len(fc.user_attributes), 0)
+
+    def test_create_selector_is_reversed_wrong_type(self):
+        with self.assertRaises(TypeError):
+            self._create_default_field_class(selector_is_reversed=23)
+
+    def test_create_invalid_selector_type(self):
+        with self.assertRaises(TypeError):
+            self._tc.create_option_with_bool_selector_field_class(self._content_fc, 17)
+
+    def test_attr_selector_is_reversed(self):
+        fc = self._create_default_field_class(selector_is_reversed=True)
+        self.assertTrue(fc.selector_is_reversed)
+
+    def test_const_attr_selector_is_reversed(self):
+        fc = self._create_default_const_field_class(selector_is_reversed=True)
+        self.assertTrue(fc.selector_is_reversed)
+
+
+class _OptionWithIntegerSelectorFieldClassTestCase(
+    _OptionWithSelectorFieldClassTestCase
+):
+    def _create_default_field_class(self, *args, **kwargs):
+        return self._tc.create_option_with_integer_selector_field_class(
+            self._content_fc, self._tag_fc, self._ranges, *args, **kwargs
+        )
+
+    def test_create_default(self):
+        fc = self._create_default_field_class()
+        self.assertEqual(fc.field_class.addr, self._content_fc.addr)
+        self.assertEqual(fc.ranges, self._ranges)
+        self.assertEqual(len(fc.user_attributes), 0)
+
+    def test_create_ranges_wrong_type(self):
+        with self.assertRaises(TypeError):
+            self._tc.create_option_with_integer_selector_field_class(
+                self._content_fc, self._tag_fc, 23
+            )
+
+    def test_create_ranges_empty(self):
+        with self.assertRaises(ValueError):
+            self._tc.create_option_with_integer_selector_field_class(
+                self._content_fc, self._tag_fc, type(self._ranges)()
+            )
+
+    def test_create_invalid_selector_type(self):
+        with self.assertRaises(TypeError):
+            self._tc.create_option_with_bool_selector_field_class(self._content_fc, 17)
+
+    def test_attr_ranges(self):
+        fc = self._create_default_field_class()
+        print(type(fc.ranges), type(self._ranges))
+        self.assertEqual(fc.ranges, self._ranges)
 
-    def _create_default_fc(self):
-        return self._tc.create_structure_field_class()
+    def test_const_attr_ranges(self):
+        fc = self._create_default_const_field_class()
+        self.assertEqual(fc.ranges, self._ranges)
+
+
+class OptionWithUnsignedIntegerSelectorFieldClassTestCase(
+    _OptionWithIntegerSelectorFieldClassTestCase, unittest.TestCase
+):
+    def setUp(self):
+        self._ranges = bt2.UnsignedIntegerRangeSet([(1, 3), (18, 44)])
+        super().setUp()
+
+    def _create_tag_fc(self):
+        return self._tc.create_unsigned_integer_field_class()
 
 
 class VariantFieldClassWithoutSelectorTestCase(
-    _TestElementContainer, unittest.TestCase
+    _TestFieldClass, _TestElementContainer, unittest.TestCase
 ):
     _append_element_method = staticmethod(
-        bt2.field_class._VariantFieldClassWithoutSelector.append_option
+        bt2._VariantFieldClassWithoutSelector.append_option
     )
     _at_index_method = staticmethod(
-        bt2.field_class._VariantFieldClassWithoutSelector.option_at_index
+        bt2._VariantFieldClassWithoutSelector.option_at_index
     )
 
-    def _create_default_fc(self):
-        return self._tc.create_variant_field_class()
+    @staticmethod
+    def _const_value_setter(variant_field):
+        variant_field.selected_option_index = 0
+        variant_field.value = 12
+
+    def _create_field_class(self, *args, **kwargs):
+        tc = get_default_trace_class()
+        return tc.create_variant_field_class(*args, **kwargs)
+
+    def _create_default_const_field_class(self, *args, **kwargs):
+        tc = get_default_trace_class()
+        fc = tc.create_variant_field_class(*args, **kwargs)
+        int_field_class = self._tc.create_signed_integer_field_class(32)
+        fc.append_option('int32', int_field_class)
+
+        return _create_const_field_class(tc, fc, self._const_value_setter)
 
+    _create_default_field_class = _create_field_class
+
+
+class _VariantFieldClassWithIntegerSelectorTestCase:
+    @staticmethod
+    def _const_value_setter(field):
+        field['variant'].selected_option_index = 0
+        field['variant'] = 12
+
+    def _create_default_field_class(self, *args, **kwargs):
+        return self._tc.create_variant_field_class(
+            *args, selector_fc=self._selector_fc, **kwargs
+        )
+
+    def _create_default_const_field_class(self, *args, **kwargs):
+        # Create a struct to contain the variant and its selector else we can't
+        # create the non-const field necessary to get the the const field_class
+        struct_fc = self._tc.create_structure_field_class()
+        struct_fc.append_member('selecteux', self._selector_fc)
+        variant_fc = self._tc.create_variant_field_class(
+            *args, selector_fc=self._selector_fc
+        )
+        variant_fc.append_option(
+            'a', self._tc.create_signed_integer_field_class(32), self._ranges1
+        )
+        struct_fc.append_member('variant', variant_fc, **kwargs)
+
+        return _create_const_field_class(self._tc, struct_fc, self._const_value_setter)[
+            'variant'
+        ].field_class
 
-class _VariantFieldClassWithSelectorTestCase:
     def setUp(self):
         self._tc = get_default_trace_class()
         self._spec_set_up()
-        self._fc = self._create_default_fc()
-
-    def _create_default_fc(self):
-        return self._tc.create_variant_field_class(self._selector_fc)
+        self._fc = self._create_default_field_class()
 
     def test_create_default(self):
         self.assertIsNotNone(self._fc)
+        self.assertEqual(len(self._fc.user_attributes), 0)
 
     def test_append_element(self):
         str_field_class = self._tc.create_string_field_class()
@@ -416,6 +990,12 @@ class _VariantFieldClassWithSelectorTestCase:
         self.assertEqual(opt.name, 'str')
         self.assertEqual(opt.ranges.addr, self._ranges1.addr)
 
+    def test_const_append(self):
+        fc_const = self._create_default_const_field_class()
+        str_field_class = self._tc.create_string_field_class()
+        with self.assertRaises(AttributeError):
+            fc_const.append_option('str', str_field_class, self._ranges1)
+
     def test_append_element_kwargs(self):
         int_field_class = self._tc.create_signed_integer_field_class(32)
         self._fc.append_option(
@@ -446,7 +1026,7 @@ class _VariantFieldClassWithSelectorTestCase:
         sub_fc1 = self._tc.create_string_field_class()
         sub_fc2 = self._tc.create_string_field_class()
 
-        with self.assertRaises(bt2.Error):
+        with self.assertRaises(ValueError):
             self._fc.append_option('yes', sub_fc1, self._ranges1)
             self._fc.append_option('yes', sub_fc2, self._ranges2)
 
@@ -456,9 +1036,40 @@ class _VariantFieldClassWithSelectorTestCase:
         with self.assertRaises(TypeError):
             self._fc.append_option(self._fc, sub_fc, self._inval_ranges)
 
+    def test_user_attributes(self):
+        self._fc.append_option(
+            'c',
+            self._tc.create_string_field_class(),
+            self._ranges1,
+            user_attributes={'salut': 23},
+        )
+        self.assertEqual(self._fc['c'].user_attributes, {'salut': 23})
+        self.assertIs(type(self._fc.user_attributes), bt2_value.MapValue)
+
+    def test_const_user_attributes(self):
+        fc_const = self._create_default_const_field_class()
+        self.assertIs(type(fc_const.user_attributes), bt2_value._MapValueConst)
+
+    def test_invalid_user_attributes(self):
+        with self.assertRaises(TypeError):
+            self._fc.append_option(
+                'c',
+                self._tc.create_string_field_class(),
+                self._ranges1,
+                user_attributes=object(),
+            )
+
+    def test_invalid_user_attributes_value_type(self):
+        with self.assertRaises(TypeError):
+            self._fc.append_option(
+                'c',
+                self._tc.create_string_field_class(),
+                self._ranges1,
+                user_attributes=23,
+            )
+
     def test_iadd(self):
-        other_fc = self._create_default_fc()
-        a_field_class = self._tc.create_real_field_class()
+        a_field_class = self._tc.create_single_precision_real_field_class()
         self._fc.append_option('a_float', a_field_class, self._ranges1)
         c_field_class = self._tc.create_string_field_class()
         d_field_class = self._tc.create_signed_enumeration_field_class(
@@ -478,6 +1089,12 @@ class _VariantFieldClassWithSelectorTestCase:
         self.assertEqual(self._fc['d_enum'].name, 'd_enum')
         self.assertEqual(self._fc['d_enum'].ranges, self._ranges3)
 
+    def test_const_iadd(self):
+        fc_const = self._create_default_const_field_class()
+        a_field_class = self._tc.create_single_precision_real_field_class()
+        with self.assertRaises(TypeError):
+            fc_const += [('a_float', a_field_class, self._ranges1)]
+
     def test_bool_op(self):
         self.assertFalse(self._fc)
         self._fc.append_option('a', self._tc.create_string_field_class(), self._ranges1)
@@ -492,7 +1109,7 @@ class _VariantFieldClassWithSelectorTestCase:
     def test_getitem(self):
         a_fc = self._tc.create_signed_integer_field_class(32)
         b_fc = self._tc.create_string_field_class()
-        c_fc = self._tc.create_real_field_class()
+        c_fc = self._tc.create_single_precision_real_field_class()
         self._fc.append_option('a', a_fc, self._ranges1)
         self._fc.append_option('b', b_fc, self._ranges2)
         self._fc.append_option('c', c_fc, self._ranges3)
@@ -500,6 +1117,20 @@ class _VariantFieldClassWithSelectorTestCase:
         self.assertEqual(self._fc['b'].name, 'b')
         self.assertEqual(self._fc['b'].ranges.addr, self._ranges2.addr)
 
+    def test_option_field_class(self):
+        a_fc = self._tc.create_signed_integer_field_class(32)
+        self._fc.append_option('a', a_fc, self._ranges1)
+        self.assertIs(
+            type(self._fc['a'].field_class), bt2_field_class._SignedIntegerFieldClass
+        )
+
+    def test_const_option_field_class(self):
+        fc_const = self._create_default_const_field_class()
+        self.assertIs(
+            type(fc_const['a'].field_class),
+            bt2_field_class._SignedIntegerFieldClassConst,
+        )
+
     def test_getitem_invalid_key_type(self):
         with self.assertRaises(TypeError):
             self._fc[0]
@@ -516,7 +1147,7 @@ class _VariantFieldClassWithSelectorTestCase:
     def test_iter(self):
         a_fc = self._tc.create_signed_integer_field_class(32)
         b_fc = self._tc.create_string_field_class()
-        c_fc = self._tc.create_real_field_class()
+        c_fc = self._tc.create_single_precision_real_field_class()
         opts = (
             ('a', a_fc, self._ranges1),
             ('b', b_fc, self._ranges2),
@@ -535,7 +1166,7 @@ class _VariantFieldClassWithSelectorTestCase:
     def test_at_index(self):
         a_fc = self._tc.create_signed_integer_field_class(32)
         b_fc = self._tc.create_string_field_class()
-        c_fc = self._tc.create_real_field_class()
+        c_fc = self._tc.create_single_precision_real_field_class()
         self._fc.append_option('c', c_fc, self._ranges1)
         self._fc.append_option('a', a_fc, self._ranges2)
         self._fc.append_option('b', b_fc, self._ranges3)
@@ -575,7 +1206,9 @@ class _VariantFieldClassWithSelectorTestCase:
         #     } variant;
         #   } inner_struct[2];
         # };
-        self._fc.append_option('a', self._tc.create_real_field_class(), self._ranges1)
+        self._fc.append_option(
+            'a', self._tc.create_single_precision_real_field_class(), self._ranges1
+        )
         self._fc.append_option(
             'b', self._tc.create_signed_integer_field_class(21), self._ranges2
         )
@@ -583,7 +1216,7 @@ class _VariantFieldClassWithSelectorTestCase:
             'c', self._tc.create_unsigned_integer_field_class(34), self._ranges3
         )
 
-        foo_fc = self._tc.create_real_field_class()
+        foo_fc = self._tc.create_single_precision_real_field_class()
         bar_fc = self._tc.create_string_field_class()
         baz_fc = self._tc.create_string_field_class()
 
@@ -617,25 +1250,23 @@ class _VariantFieldClassWithSelectorTestCase:
 
         self.assertEqual(len(path_items), 3)
 
-        self.assertIsInstance(path_items[0], bt2.field_path._IndexFieldPathItem)
+        self.assertIsInstance(path_items[0], bt2._IndexFieldPathItem)
         self.assertEqual(path_items[0].index, 1)
 
-        self.assertIsInstance(
-            path_items[1], bt2.field_path._CurrentArrayElementFieldPathItem
-        )
+        self.assertIsInstance(path_items[1], bt2._CurrentArrayElementFieldPathItem)
 
-        self.assertIsInstance(path_items[2], bt2.field_path._IndexFieldPathItem)
+        self.assertIsInstance(path_items[2], bt2._IndexFieldPathItem)
         self.assertEqual(path_items[2].index, 0)
 
     def test_selector_field_path_root_scope(self):
         self._fill_default_fc_for_field_path_test()
         self.assertEqual(
-            self._fc.selector_field_path.root_scope, bt2.field_path.Scope.PACKET_CONTEXT
+            self._fc.selector_field_path.root_scope, bt2.FieldPathScope.PACKET_CONTEXT
         )
 
 
 class VariantFieldClassWithUnsignedSelectorTestCase(
-    _VariantFieldClassWithSelectorTestCase, unittest.TestCase
+    _VariantFieldClassWithIntegerSelectorTestCase, unittest.TestCase
 ):
     def _spec_set_up(self):
         self._ranges1 = bt2.UnsignedIntegerRangeSet([(1, 4), (18, 47)])
@@ -646,7 +1277,7 @@ class VariantFieldClassWithUnsignedSelectorTestCase(
 
 
 class VariantFieldClassWithSignedSelectorTestCase(
-    _VariantFieldClassWithSelectorTestCase, unittest.TestCase
+    _VariantFieldClassWithIntegerSelectorTestCase, unittest.TestCase
 ):
     def _spec_set_up(self):
         self._ranges1 = bt2.SignedIntegerRangeSet([(-10, -4), (18, 47)])
@@ -656,7 +1287,36 @@ class VariantFieldClassWithSignedSelectorTestCase(
         self._selector_fc = self._tc.create_signed_integer_field_class()
 
 
-class StaticArrayFieldClassTestCase(unittest.TestCase):
+class _ArrayFieldClassTestCase:
+    def test_attr_element_field_class(self):
+        fc = self._create_array()
+        self.assertIs(
+            type(fc.element_field_class), bt2_field_class._SignedIntegerFieldClass
+        )
+
+
+class _ArrayFieldClassConstTestCase:
+    def test_const_attr_element_field_class(self):
+        fc = self._create_const_array()
+        self.assertIs(
+            type(fc.element_field_class), bt2_field_class._SignedIntegerFieldClassConst
+        )
+
+
+class StaticArrayFieldClassTestCase(
+    _ArrayFieldClassTestCase, _ArrayFieldClassConstTestCase, unittest.TestCase
+):
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = [9] * 45
+
+    def _create_array(self):
+        return self._tc.create_static_array_field_class(self._elem_fc, 45)
+
+    def _create_const_array(self):
+        fc = self._tc.create_static_array_field_class(self._elem_fc, 45)
+        return _create_const_field_class(self._tc, fc, self._const_value_setter)
+
     def setUp(self):
         self._tc = get_default_trace_class()
         self._elem_fc = self._tc.create_signed_integer_field_class(23)
@@ -665,6 +1325,7 @@ class StaticArrayFieldClassTestCase(unittest.TestCase):
         fc = self._tc.create_static_array_field_class(self._elem_fc, 45)
         self.assertEqual(fc.element_field_class.addr, self._elem_fc.addr)
         self.assertEqual(fc.length, 45)
+        self.assertEqual(len(fc.user_attributes), 0)
 
     def test_create_invalid_elem_field_class(self):
         with self.assertRaises(TypeError):
@@ -683,16 +1344,54 @@ class StaticArrayFieldClassTestCase(unittest.TestCase):
             )
 
 
-class DynamicArrayFieldClassTestCase(unittest.TestCase):
+class DynamicArrayFieldClassTestCase(
+    _ArrayFieldClassTestCase, _ArrayFieldClassConstTestCase, unittest.TestCase
+):
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = []
+
+    def _create_array(self):
+        return self._tc.create_dynamic_array_field_class(self._elem_fc)
+
+    def _create_const_array(self):
+        fc = self._tc.create_dynamic_array_field_class(self._elem_fc)
+        return _create_const_field_class(self._tc, fc, self._const_value_setter)
+
     def setUp(self):
         self._tc = get_default_trace_class()
         self._elem_fc = self._tc.create_signed_integer_field_class(23)
-        self._len_fc = self._tc.create_unsigned_integer_field_class(12)
 
     def test_create_default(self):
         fc = self._tc.create_dynamic_array_field_class(self._elem_fc)
         self.assertEqual(fc.element_field_class.addr, self._elem_fc.addr)
+        self.assertEqual(len(fc.user_attributes), 0)
+
+    def test_create_invalid_field_class(self):
+        with self.assertRaises(TypeError):
+            self._tc.create_dynamic_array_field_class(object())
+
+
+class DynamicArrayWithLengthFieldFieldClassTestCase(
+    _ArrayFieldClassTestCase, unittest.TestCase
+):
+    @staticmethod
+    def _const_value_setter(field):
+        field.value = []
+
+    def _create_array(self):
+        return self._tc.create_dynamic_array_field_class(self._elem_fc, self._len_fc)
+
+    def setUp(self):
+        self._tc = get_default_trace_class()
+        self._elem_fc = self._tc.create_signed_integer_field_class(23)
+        self._len_fc = self._tc.create_unsigned_integer_field_class(12)
+
+    def test_create_default(self):
+        fc = self._create_array()
+        self.assertEqual(fc.element_field_class.addr, self._elem_fc.addr)
         self.assertIsNone(fc.length_field_path, None)
+        self.assertEqual(len(fc.user_attributes), 0)
 
     def _create_field_class_for_field_path_test(self):
         # Create something a field class that is equivalent to:
@@ -707,9 +1406,9 @@ class DynamicArrayFieldClassTestCase(unittest.TestCase):
         #   } inner_struct[2];
         # };
 
-        fc = self._tc.create_dynamic_array_field_class(self._elem_fc, self._len_fc)
+        fc = self._create_array()
 
-        foo_fc = self._tc.create_real_field_class()
+        foo_fc = self._tc.create_single_precision_real_field_class()
         bar_fc = self._tc.create_string_field_class()
         baz_fc = self._tc.create_string_field_class()
 
@@ -745,26 +1444,20 @@ class DynamicArrayFieldClassTestCase(unittest.TestCase):
 
         self.assertEqual(len(path_items), 3)
 
-        self.assertIsInstance(path_items[0], bt2.field_path._IndexFieldPathItem)
+        self.assertIsInstance(path_items[0], bt2._IndexFieldPathItem)
         self.assertEqual(path_items[0].index, 1)
 
-        self.assertIsInstance(
-            path_items[1], bt2.field_path._CurrentArrayElementFieldPathItem
-        )
+        self.assertIsInstance(path_items[1], bt2._CurrentArrayElementFieldPathItem)
 
-        self.assertIsInstance(path_items[2], bt2.field_path._IndexFieldPathItem)
+        self.assertIsInstance(path_items[2], bt2._IndexFieldPathItem)
         self.assertEqual(path_items[2].index, 2)
 
     def test_field_path_root_scope(self):
         fc = self._create_field_class_for_field_path_test()
         self.assertEqual(
-            fc.length_field_path.root_scope, bt2.field_path.Scope.PACKET_CONTEXT
+            fc.length_field_path.root_scope, bt2.FieldPathScope.PACKET_CONTEXT
         )
 
-    def test_create_invalid_field_class(self):
-        with self.assertRaises(TypeError):
-            self._tc.create_dynamic_array_field_class(object())
-
     def test_create_invalid_length_type(self):
         with self.assertRaises(TypeError):
             self._tc.create_dynamic_array_field_class(
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